ADP1653 Flash LED Driver
Evaluation Board Manual
EVAL-ADP1653EB
plugged directly into the motherboard or connected to the
motherboard via the ribbon cable provided with the evaluation kit.
FEATURES
Input voltage 2.7 V to 5.5 V
Boost solution supports up to 12 V
Evaluates 1 to 4 LED solutions
Configurable for 2-bit logic or I2C® interface
Jumpers for measurement of flash LED current
and inductor current
TxMask for changing flash current on the fly
Evaluation software included
The motherboard features a 3.3 V regulator and a 1.8 V
regulator. The jumpers on the bottom left of the motherboard
set the VIC voltage, which is the I2C voltage for the control pins.
Users can choose among the 1.8 V, 3.3 V, or 5 V USB or the
external VBAT as the supply voltage for the daughterboard.
The daughterboard contains numerous jumpers and test points
for easy evaluation of the board. Also included with the kit are
two current probes that can be plugged directly into jumper
heads to measure currents with current probes.
GENERAL DESCRIPTION
The evaluation system is composed of a motherboard and
a daughterboard. The motherboard provides the I2C signals
from the computer USB port and generates the I/O voltages
and digital high and low signals for the daughterboard. For
temperature measurement, the daughterboard can be either
Warning
For safety reasons, do not look directly into the LEDs at close
range. They are very bright and can cause eye injury.
C21
U3
C30
MINI
USB
C5 D8 USB_OK
C7 R21
C12
C18
C9 C50
R62
R30
C13
R63
C51
C8
C19
C15
C16
INT
J8
SCL
SDA
J4
Tx
R66
VIC
R25
REV 0.4.1
R6
R5
R4
R3
SETI
J6
R2
ANALOG DEVICES
C1
GND
J1
SETF L1
J5
D7 R23
GP1
GP2
SDA
GND
SETT
STR
R65
VIC
OUT
D1
D2
C3
SHARP
R1
C2
J3
J2
D3
JP3
GND
GND
D10
HPLED
U4
JP11
JP10
VBAT 1.8V 3.3V
H
ADI USB/I2C INTERFACE 0.4
EN
J7
GND
VBAT
GND
VBAT
R64
C17
C14
R22
R24
VBAT
5V
R51
GND
U2
C11
JP12
5V
C6
C10
R50
JP13
L
L
SCL/CTRL1
H
JP9
L
L H
SDA/CTRL0
TxMASK
ADP1653
06298-001
C31
JP6
R31
GP1
GP2
D6 R20
R27
INT
D5 R19
H
R26
INT
EN
U5
SCL
STROBE
EN
C20
STR
FUNCTIONAL BLOCK DIAGRAM
Figure 1.
Rev. A
Evaluation boards are only intended for device evaluation and not for production purposes.
Evaluation boards as supplied “as is” and without warranties of any kind, express, implied, or
statutory including, but not limited to, any implied warranty of merchantability or fitness for a
particular purpose. No license is granted by implication or otherwise under any patents or other
intellectual property by application or use of evaluation boards. Information furnished by Analog
Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog
Devices for its use, nor for any infringements of patents or other rights of third parties that may result
from its use. Analog Devices reserves the right to change devices or specifications at any time
without notice. Trademarks and registered trademarks are the property of their respective owners.
Evaluation boards are not authorized to be used in life support devices or systems.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113 ©2006–2007 Analog Devices, Inc. All rights reserved.
EVAL-ADP1653EB
TABLE OF CONTENTS
Features .............................................................................................. 1
Evaluation Board Overview .............................................................9
General Description ......................................................................... 1
Motherboard ..................................................................................9
Functional Block Diagram .............................................................. 1
Motherboard Schematics .......................................................... 10
Software Installation......................................................................... 3
Daughterboard............................................................................ 11
USB Driver Installation.................................................................... 5
Daughterboard Schematics ....................................................... 13
Using the Software............................................................................ 6
Test Results Using Evaluation Board ....................................... 14
ILED and HPLED Current Programming ................................ 6
PCB Layout ................................................................................. 15
Software Strobe ............................................................................. 7
FAQs................................................................................................. 17
Clock and Timeout Duration Programming............................ 7
Ordering Information.................................................................... 18
Fault Detection Status .................................................................. 7
Bill of Materials........................................................................... 18
Register Values .............................................................................. 7
Ordering Guide .......................................................................... 20
Auto Range Finder ....................................................................... 7
ESD Caution................................................................................ 20
History ........................................................................................... 8
Rev. A | Page 2 of 20
EVAL-ADP1653EB
SOFTWARE INSTALLATION
3.
Figure 2. ADP165x Evaluation Software Setup
Figure 4. Choose Destination Location
4.
Click Next> to continue with the installation.
Figure 3. License Agreement
Rev. A | Page 3 of 20
06298-005
Click Yes to accept the license agreement.
06298-003
2.
Click Next> to install the files to the default destination folder
or click Browse… to choose a different file.
06298-004
Insert the setup CD into the CD-ROM and run the file
ADP1653 Setup 0_5.exe. When the dialog box shown in
Figure 2 appears, click Next> to continue.
06298-002
1.
Figure 5. Setup Type
EVAL-ADP1653EB
Figure 6. Select Program Folder
Wait while the program installs.
06298-007
6.
Figure 7. Status Setup
Rev. A | Page 4 of 20
Click Finish to complete the installation.
06298-008
7.
Click Next> to install the program to the default
program folder.
06298-006
5.
Figure 8. InstallShield Wizard Complete
EVAL-ADP1653EB
USB DRIVER INSTALLATION
Plug the ADP1653 board into the computer using the USB
cable provided with the evaluation kit. Once the system recognizes the board, the dialog box shown in Figure 9 appears.
2.
Click Next> to install the driver.
3.
Click Continue Anyway and then Finish to complete the
driver installation.
06298-010
1.
06298-009
Figure 10. Hardware Installation
Figure 9. Found New Hardware Wizard
Rev. A | Page 5 of 20
EVAL-ADP1653EB
USING THE SOFTWARE
1
2
4
5
3
6
7
HISTORY.
ILED AND HPLED CURRENT PROGRAMMING.
SOFTWARE STROBE FOR FLASHING.
CLOCK AND TIME OUT DURATION PROGRAMMING.
5. FAULT DETECTION STATUS.
6. AUTO RANGE FINDER.
7. REGISTER VALUES.
06298-011
1.
2.
3.
4.
Figure 11. Evaluation Board Software
Before running the software, ensure that the board is plugged
into the computer USB port (the USB-OK LED on the
motherboard should light up).
1.
Click START > All Programs > Analog Devices > ADP165x
Evaluation Software0_5 > ADP1653 Rev E.exe. The software
detects the presence of the board’s USB interface and sends the
following message: I2C OK.
2.
Click OK to continue.
of the resistors and the TxMask voltage in the software does not
change the actual current of the LEDs. To change the actual
current, replace the physical resistors or change the TxMask voltage
on the board. The Update TxMask and SETF Resistors button
merely calculates the current levels that correspond to the values
of the resistors and the TxMask voltage entered in the text
boxes.
For the given values of the R4, R5, and TxMask voltage, the
HPLED current is
ILED AND HPLED CURRENT PROGRAMMING
I REF =
To program the ILED current, slide the ILED Current scroll
bar to the desired setting and click UPDATE!. For the HPLED
current, enter the values of the TxMask voltage and the SETF
resistors (R4 and R5), and then click Update TxMask and SETF
Resistors. The default values are TxMask Voltage = 0 (GND), R4 =
332 kΩ, and R5 = 105 kΩ. As you change the values of the
TxMask voltage and the SETF resistors, the HPLED current
values shown adjust accordingly. Note that changing the values
1.2 V 1.2 V − VTxMask
+
R5
R4
I HPLED = (35 mA + Code × 15 mA) ×
50 kΩ × I REF
1. 2 V
where IREF is the reference current at the SETF pin, and Code is
the HPLED register setting, ranging from 0 to 31.
Rev. A | Page 6 of 20
EVAL-ADP1653EB
Applying a TxMask voltage reduces the SETF reference current
and therefore reduces the HPLED current. The maximum
TxMask voltage allowed for R4 and R5 is
R4 ⎞
VTxMask = 1.2 V × ⎛⎜1 +
⎟
⎝ R5 ⎠
Using a larger TxMask voltage causes a negative reference
current and triggers the overvoltage protection. The interrupt
LED turns on to indicate the fault.
Table 1 shows the maximum HPLED current (code = 31) for
various values of R4, R5, and TxMask voltage. The first entry
(R4 = 99999, R5 = 50 kΩ, and TxMask = Z) simulates the default
internal reference current obtained by tying the SETF pin high.
R4 = 99999 is equivalent to R4 being any numerical value.
Table 1. Maximum HPLED Currents
R4 (kΩ)
999991
50
332
150
1
R5 (kΩ)
50
50
105
50
TxMask
Voltage (V)
Z
1.8
0
3.3
Maximum
HPLED Current (mA)
500
250
313
208
R4 = 99999 is equivalent to R4 being any numerical value.
Timeout Configuration
The user can choose to run the device in the timed or untimed
mode. In timed mode, the LEDs flash for the programmed timeout
duration even if the strobe button is released prior to the end of
the duration. In untimed mode, the LEDs flash for as long as the
hardware strobe button is pressed until the programmed timeout
duration is reached. The part then issues a timeout fault, and the
interrupt LED lights up.
Timeout Value
The Time Out Value drop-down box is used to program the
timeout duration.
FAULT DETECTION STATUS
The Register 3 – Fault Register section is used to read back the
fault detection status from the ADP1653. When a fault occurs,
the interrupt LED on the motherboard lights up. Click READ! to
view information about the fault. Overvoltage fault occurs when
the output voltage is greater than 10.2 V (nominal). Timeout
fault occurs when the user presses the strobe button longer than
the programmed timeout duration in the untimed mode.
Thermal fault occurs when the device junction temperature is
greater than 155°C. Short-circuit fault occurs if the HPLED pin
remains grounded 820 ms after torch is enabled.
REGISTER VALUES
Slide the HPLED Current scroll bar to the desired setting and
click UPDATE! to change the HPLED settings. Settings 1 to 11
are torch mode, and settings 12 to 31 are flash mode. All the
settings are indicated next to the HPLED Current scroll bar.
When the device is in flash mode, you must click either the
Physical Strobe button on the motherboard or the STROBE!
button in the software to flash the LEDs. Clicking Reset Fault
clears any interrupts by resetting both ILED and HPLED
settings to 0.
SOFTWARE STROBE
Instead of using the Hardware Strobe button on the motherboard,
an I2C software strobe can be used. When the HPLED register is in
the flash setting, click STROBE! to flash the LEDs.
The register values section displays the value in each register in the
hexadecimal format.
AUTO RANGE FINDER
The Auto Range Finder box is used to simulate the function of
a camera’s auto range finder, which is used to torch the LEDs to
focus on the object in a dark room, for example, and then to
flash the LEDs and take a picture. To use this feature, select the
desired setting for both the torch and flash modes (1 to 11 for
torch, 12 to 31 for flash). Then click Torch Then Flash once to
torch the LEDs and once more to initiate a flash.
CLOCK AND TIMEOUT DURATION PROGRAMMING
Oscillator Frequency
Because the timeout duration that the software reports is based
on the default 1.2 MHz, if the oscillator frequency is not exactly
1.2 MHz, the timeout duration shown is incorrect. As a result,
you can enter the exact oscillator frequency measured on a scope
and then click UPDATE! to calculate the correct timeout duration.
Rev. A | Page 7 of 20
EVAL-ADP1653EB
HISTORY
Whenever you issue a command (both read and write), it is
recorded in the History dialog box shown in Figure 12.
To display the History dialog box, click the History menu on
the main software dialog box or the Windows® History tab on
the bottom. To clear the history, click Clear History.
06298-012
You can copy and paste the history into a file for future
evaluation purposes.
Figure 12. History
Rev. A | Page 8 of 20
EVAL-ADP1653EB
EVALUATION BOARD OVERVIEW
MOTHERBOARD
C21
C31
U3
C30
MINI
USB
D7 R23
CONNECT MOTHER BOARD TO DAUGHTER BOARD
DIRECTLY AT HEADER OR WITH RIBBON
CABLE FOR TEMP MEASURMENTS
U2
C10
C11
JP12
3.3VC19
5V
R51
R64
C6
C51
C8
JP13
L
GP1
GND
C5 D8 USB_OK
C12
C7 R21
C18
C9C50
R62
R30
C13
R63
R50
VIC: USE HEADER TO SET
INTERFACE VOLTAGE,
AND SUPPLY FOR EEPROM
JP6
R31
D6 R20
R27
GP2
INT
D5 R19
H
R26
ADP3300: 3.3V 500mA LDO
SUPPLY FOR CY68013A
GND
EN
GP2
GP1
STROBE
U5
INT LED: INDICATES FAULT CONDITION
INT
SCL
SDA
C20
STR
STROBE: USE PUSHBUTTON FOR FLASH
FOR I2C MODE CODES >12 -31
(HPLED > 200mA FOR DEFAULT SETF RESISTOR)
EN
ADP1715 1.8V 500mA LDO
C17
C14
R22
R24
C15
R65
R66
C16
R25
VIC
5V
1.8V
U4
H
ADI USB/I2C INTERFACE 0.4
JP11
JP10
VBAT1.8V 3.3V
L
SCL/CTRL1
H
JP9
L
L H
SDA/CTRL0
TxMASK
CY68013A MICROCONTROLLER:
PROVIDES USB TO I2C CONVERSION.
HARDWARE MODE: USE 3-WAY SWITCH TO SELECT OPERATION.
I2C MODE: TIE SCL AND SDA TO H POSITION.
06298-013
VBAT
1.8V EEPROM M24C64R:
HOLDS USB ID CODES
Figure 13. Motherboard
operation. Table 2 shows the recommended settings when the
device is first powered up.
The ADP1653 motherboard provides the interface signals to the
ADP1653 flash driver IC. These include the CTRL0/SDA and
CTRL1/SCL lines for I2C or the control line voltages for the HW
interface modes (strobe, enable, and TxMask).
Table 2. Recommended Settings
The Cypress Semiconductor Corporation CY68013A provides
the USB interface and I2C signals. The selected I2C frequency is
100 kHz. The Motorola M24C64R provides the USB address of
the board. The interface voltage is selected with the VIC header
on the board and is set to 3.3 V by default.
Control
EN
CTRL0/SDA
CTRL1/SCL
STR
Typically, the daughterboard is inserted directly into the 20-pin
header of the motherboard. For temperature measurements,
however, the ribbon cable provided with the evaluation kit must
be used to connect the motherboard and the daughterboard
because the Cypress CY68013A is not rated at −40°C. The 8-pin
header on the top of the motherboard can be used to connect
external signals. A no connect state is selectable on all signals
generated by the motherboard.
The INT red LED located at the top right of the board lights up
when a fault is detected on the ADP1653. However, with the
daughterboard connected and no VDD supply to the ADP1653, the
INT red LED also lights up even though this is normal
Hardware Mode
INTF = 1
High
See Table 3
See Table 3
X = don’t care
I2C Mode
INTF = 0
High
Must be high
Must be high
For HPLED setting > 12,
enables flash
In the hardware mode, CTRL0 and CTRL1 determine the mode
of operation. Table 3 shows the combinations of settings for the
control pins and the corresponding modes.
Table 3. Control Pins
Mode of Operation
Disabled
ILED
Torch
Flash
Rev. A | Page 9 of 20
CTRL1
0
0
1
1
CTRL0
0
1
0
1
VDD
D–
D+
ID
GND
SHELL
TP16
3.3V
OUT1
C30
100nF
TP18
IC_VDD
TP19
VBAT
TP17
USB
OUT2
IN1
TP20
1.8V
ADP3303- 3.3
IN2
NR
GND
C17 C18
C14
C15
C16
1nF 100nF 100nF 100nF 100nF
1
2
3
4
5
6
ERR
SD
U3
TP21
GND
1
2
3
IC_VDD
VBAT_M
IC_VDD2
2
1
3
C12
1µF
5V USB
JP13
C5
100nF
R31
1kΩ
Y1
2
3
1
2
3
C19
100nF
R22
10kΩ
RES
IFCLK
GND1
R25
2.2kΩ
SDA
U4
M24LC64
JP11
TP15
1
1
2
3
3
R33*
105kΩ
STR
SDA/CTRL0
2
SDA1
INT
GPIO2
GPIO1
3.3V
JP10
1
1
3.3V
PAD
29
30
31
32
33
34
35
36
37
38
39
40
41
42
2
SCL/CTRL1
2
3
3
1
C6
100nF
R30
100kΩ
JP9
IC_VDD
GPIO1
GPIO2
SDA1
SCL1
INT
STR
EN
2
1
EN
3
JP6
1
1
1
2
3
R66*
R65*
R64*
R63*
R62*
2
SETF
2
3
R35*
0Ω
IC_VDD
3
IC_VDD
ENABLE
JP8
4
19
17
15
13
11
9
7
5
3
1
JP20
1
2
3
4
5
6
7
8
9
10
6
JP21
1
2
3
4
5
6
7
8
9
10
8
HEADER 10
1
2
3
4
5
6
7
8
9
10
R51*
7
VBAT_M
JP7
HEADER LARGE 8
R23*
D7*
LED
2 HEADERS USED FOR MECHANICAL STABILITY
1 ON MOTHER, DAUGHTER
HEADER 10
1
2
3
4
5
6
7
8
9
10
5
SCL1 SDA1
3
R20*
D6*
LED
GPIO2 GPIO1
HEADER LARGE 10 × 2
20
18
16
14
12
10
8
6
4
2
STROBE !
2
R19*
2 1
SW PUSHBUTTON
S1
3
4
INT
D5
LED
R32
105kΩ
IC_VDD
STROBE ! SWITCH BRINGS STR HIGH
FOR FLASH !
IC_VDD
3.3V
EN
R34*
105kΩ
3.3V
3.3V
C7
10µF
SCL1
PAD
CTL0
CTL1
CTL2
VCC4
PA0/INT1
AGND2
VCC1
PA1/INT1
D–
PA2/*SLOE
PA3/*WU2
CY7C68013A
PA4/FIFOADR0
D+
AVCC2
PA5/FIFOADR1
PA6/*PKTEND
PA7/*FLAG
GND4
RESET
AGND1
XTALIN
XTALOUT
AVCC1
RDY1/SLWR
RDY0/SLRD
R24
2.2kΩ
14
13
12
11
10
9
8
7
6
5
4
3
2
1
I2C CONTROL LINES
SCL
TP14
IC_VDD
C11
2.2uF
3.3V
C8
6.2pF
C51
100nF
3.3V
1.8V
3.3V
IC_VDD1
2
1
3
JP12
IC_VDD
3.3V
C10
10nF
C9
6.2pF
CRYSTAL14
1
4
3.3V
NOTES
1. DECOUPLING FOR EACH OF 6 68013A DIGITAL INPUTS, 0402 CAPS PLACED
AS CLOSE AS POSSIBLE TO EACH PIN. GROUND IS COMMON GROUND TO AGND
AT 1 POINT. NO GROUND DISTINCTION IN SCHEMATIC.
2. IC_VDD IS THE DIGITAL INTERFACE SUPPLY VOLTAGE—IC_VDD
SHOULD BE CONNECTED TO EITHER 5V, 3.3V, 1.8V OR VBATT
USING J4, J5.
3. R33, R34, R35 CAN BE ADDED IN HW MODE TO ALLOW FAST TRANSITIONS BETWEEN STATES
*NOT POPULATED
3.3V
C13
100nF
1.8V
VBAT_M
IC_VDD
5V USB
3.3V
USB MINI B
JP5
C31
47µF
GND1
SS
ADP1715-1.8
GND2
OUT
15
R27
100kΩ
56
SCL
16
R26
220kΩ
17
5V USB
U2
18
C50
2.2µF
19
D8
LED
55
VCC6
SDA
52
PB1/FD1
20
GND3
PB2/FD2
21
GND4
PB3/FD3
22
IN
PB4/FD4
23
EN
PB5/FD5
24
U5
VCC2
GND6
54
CLKOUT
53
GND5
PB0/FD0
51
PD7/FD14
50
PD6/FD13
49
PD5/FD12
48
PD4/FD11
3.3V
PD2/FD9
PB6/FD6
25
C21
2.2µF
WP
VCC
A0
GND2
26
1.8V
SCL
VCC3
27
C20
2.2µF
SDA
A1
Rev. A | Page 10 of 20
A2
Figure 14. Motherboard Schematics
VSS
PB7/FD7
47
PD3/FD10
46
PD1/FD9
45
PD0/FD8
44
*WAKEUP
43
VCC5
GND3
28
3.3V
06298-014
R21
100kΩ
EVAL-ADP1653EB
MOTHERBOARD SCHEMATICS
EVAL-ADP1653EB
DAUGHTERBOARD
VIN
IIN
2.7V TO 5.5V, 2.0A SUPPLY
OR BATTERY
USE THICK SHORT CABLES
ADP1653 EVAL BOARD
ANALOG DEVICES
J7
C1
SETT
EN
J8
A
J1
STR
INT
SETF
J5
R6
R5
SCL
SDA
SETI
Tx
L1
REV 0.4.1
R3
GND
C3
SHARP
J3
CLOSE J2 FOR 1 LED
EVALUATION
J2
D3
JP3
R2
USE JP6 TO CONNECT
VIC (MOTHER BOARD) TO VBAT
(USEFUL WHEN NO SUPPLY
AVAILABLE MAX 300mA)
D2
R1
C2
J6
R1 CAN BE USED TO MEASURE
IHPLED OR INCREASE BOOST VOLTAGE
TO SIMULATE HIGH VF LED
OUT
ADP1653
ILED
VIC
D1
R4
J4
MEASURE IL WITH
CURRENT PROBE
D10
I2C
HW
GND
USE JP3
TO SET HW
OR I2C MODE
HPLED
MEASURE I HPLED WITH
CURRENT PROBE
06298-015
VBAT
GND
VBAT
GND
GND
Figure 15. Daughterboard
The ADP1653 evaluation daughterboard is designed to quickly
evaluate key parameters of the ADP1653 IC. The board layout
footprint is extended so that parts can be exchanged easily, and
headers are available to measure currents using a current probe
or ammeter.
High VF LEDs
Connect a power supply or Li-Ion battery with 2 A capability
to VBAT. Up to 1.8 A (nominal) can be drawn from the battery;
therefore, short thick cables are recommended to minimize the
IR drops. A high current can cause a big IR drop, and VBAT can be
low enough to put the part into UVLO.
The J2 jumper can be placed to short D3 for the evaluation of
the one-LED solution.
IQ
IQ is the supply current and can be measured by using an
ammeter across J8.
One-LED Evaluation
HW Mode or I2C
JP3 is used to select the hardware mode or I2C mode. Shorting
the INTF pin to VBAT selects the hardware mode, whereas
shorting it to GND selects the I2C mode.
Power Board from USB Port Only
IL
IL is the inductor current and can be measured by using a current
loop across J1.
ILED
By default, R1 is 0 Ω. It can be replaced with another resistor
for current measurement or for increasing the OUT voltage (to
simulate a higher boost ratio for a high VF LED).
To power the board via the USB without using an external
supply, short Jumper J6 on the daughterboard and short VIC to
5 V on JP13 on the motherboard. Figure 16 illustrates these two
jumpers. Ensure that the LED current is less than 200 mA to
avoid exceeding the 500 mA current limit of the USB.
ILED is the LED current and can be measured by using an
ammeter or current loop across JP3.
Rev. A | Page 11 of 20
U3
C30
MINI
USB
C5 D8 USB_OK
C7 R21
C12
C18
C9 C50
R62
R30
C13
R63
C51
C8
C11
C19
5V
C15
C16
J8
SCL
Tx
R6
R5
J4
R4
R3
SETI
VIC
J6
R66
REV 0.4.1
R2
ANALOG DEVICES
C1
GND
J1
SETF L1
J5
SDA
D7 R23
GP1
GP2
GND
SETT
INT
R25
OUT
D1
D2
C3
SHARP
R1
C2
J3
J2
D3
JP3
GND
GND
D10
HPLED
U4
JP11
JP10
VBAT 1.8V 3.3V
H
ADI USB/I2C INTERFACE 0.4
EN
J7
STR
R65
VIC
VBAT
VBAT
GND
VBAT
GND
GND
R64
C17
C14
R22
R24
JP12
5V
C6
R51
U2
C10
R50
JP13
SHORT VIC
TO 5V
R31
C21
L
SCL/CTRL1
H
JP9
L
L H
SDA/CTRL0
TxMASK
SHORT J6
Figure 16. Evaluation Board Setup to Run from USB Power
Rev. A | Page 12 of 20
ADP1653
06298-016
C31
L
D6 R20
R27
JP6
GP1
GP2
INT
D5 R19
H
R26
SDA
EN
U5
INT
SCL
STROBE
EN
C20
STR
EVAL-ADP1653EB
Figure 17. Daughterboard Schematics
4
6
8
10
12
14
16
18
20
3
5
7
9
11
13
15
17
19
J6
7
7
VBAT
TP3
VIC_D
6 CTRL0/SDA
6
9
5 CTRL1/SCL
5
10
4 INT
4
9
3 STR
3
10
2 EN
2
8 TxMASK
1
1
8
VIC_D
JP2
NOTES
1. GND (IC), PGND SHOULD BE CONNECTED AT A SINGLE POINT.
*NOT POPULATED ON THE BOARD.
2
1
JP1
VBAT
PGND
TP10
AGND
TP13
AGND
TP5
R2
10kΩ
VIC_D
CTRL0/SDA
VIC_D
CTRL1/SCL
R4
332kΩ
VBAT
VIC_D
J5
TP4
R5
105kΩ
VIC_D
J4
R6
47kΩ
J7
VBAT
VBAT
J8
J1
1
2
CTRL0/SDA
D4
INDICATOR LED
U1
17
9
10
11
12
PGND
D1
2
1
J2
TP2
C3
*
HPLED
D3
WHITE-LED
D2
WHITE-LED
JP3
OUT
4 C2
3 A2
2 A1
1 C1
D9
CAPACITOR/TVS DIODES CAN BE
PLACED HERE FOR ESD PROTECTION.
J3
OUT
R1
0Ω
3 2 1
INTF = GND, I 2C MODE
INTF
3 2
C2
4.7 µF
LX NODE
TP1
INTF = HI, HW MODE
VBAT
OUT
PAD
HPLED
INTF
INT
PGND
1
L1
2.2µH
C1
4.7µF
POWER SECTION
ADP1653
CTRL1/SCL
SETF
R3
47.5kΩ
4
3
2
1 SETT
15
EN
ILED
6
TP11
AGND
5
13
TP12
AGND
16
STR
SETI
14
VDD
OUT
7
LX
GND
8
Rev. A | Page 13 of 20
D10
WHITE-LED
SHARP LED
C3 5
A3 6
A4 7
C4 8
06298-017
RANDOM AGND TESTPOINTS FOR DIGITAL SIGNALS.
EVAL-ADP1653EB
DAUGHTERBOARD SCHEMATICS
EVAL-ADP1653EB
TEST RESULTS USING EVALUATION BOARD
Table 4. Current Limit—Typical Part, OUT = 6.9 V
1
VBAT (V)
Temp (°C)
Current Limit (A)
Maximum Output
Current (mA),
Two LEDs
2.9
−40
0
+25
+85
+125
−40
0
+25
+85
+125
2.1
2.08
2.03
1.93
1.86
N/A
N/A
N/A
N/A
N/A
500
486
470
440
415
500
500
500
500
500
3
06298-020
3.6
2
4
CH1 5.00V
CH2 5.00V
M200µs
CH3 1.00A Ω CH4 200mA Ω T
8µs
A CH4
272mA
Figure 20. Tx Masking—0 V to 3.3 V
Channel 1— Input Voltage
Channel 2—Output Voltage
Channel 3—Input (Inductor) Current
Channel 4—Output Current
1
2
3
CH1 1.00V
M40.0µs
A CH1
06298-021
Δ: 143µs
@: 74.4µs
1
06298-018
Δ: 2.76V
@: 6.38V
4
M200µs
CH1 5.00V
CH2 5.00V
CH3 1.00A Ω CH4 200mA Ω T
8µs
4.76V
Figure 18. Soft Start Ramp, Two LEDs, VBAT = 3.6 V, TA = 25°C
A CH4
272mA
Figure 21. Tx Masking—3.3 V to 0 V
Channel 1—Input Voltage
Channel 2—Output Voltage
Channel 3—Input (Inductor) Current
Channel 4—Output Current
Δ: 412ms
@: 412ms
CH1 2.00V
M100ms
A CH1
06298-019
Δ: 760mV
@: 6.64V
84
VIN = 4.2V
82
VIN = 3.6V
80
78
VIN = 3.0V
VIN = 3.2V
76
74
4.76V
Figure 19. OUT Voltage—Timed Flash Mode, STR Glitch (Write 0 × 10 to Reg 1,
Glitch STR, Capture Transient on Scope and Measure Period) TA = 25°C
(Design = 410 ms, Measure = 412 ms)
72
70
100
150
200
250
300
LED CURRENT (mA)
350
400
06298-022
1
EFFICIENCY (%)
86
Figure 22. Efficiency Measurements, L = D2812C-2R0 (Toko America, Inc.)
Efficiency = PLED/PIN
Rev. A | Page 14 of 20
EVAL-ADP1653EB
PCB LAYOUT
The evaluation kit contains two boards. One board is for easy evaluations and contains a large footprint and layout size. The other is a reference
design that shows a small layout solution. Both boards utilize a 4-layer design with minimum traces.
06298-023
Evaluation Board Layout
06298-024
Figure 23. Evaluation Daughterboard, Top Layer
06298-025
Figure 24. Evaluation Daughterboard, VDD Plane
06298-026
Figure 25. Evaluation Daughterboard, GND Plane
Figure 26. Evaluation Daughterboard, Bottom Layer
Rev. A | Page 15 of 20
EVAL-ADP1653EB
06298-027
Reference Board Layout
06298-028
Figure 27. Reference Daughterboard, Top Layer
06298-029
Figure 28. Reference Daughterboard, VDD Plane
06298-030
Figure 29. Reference Daughterboard, GND Plane
Figure 30. Reference Daughterboard, Bottom Layer
Rev. A | Page 16 of 20
EVAL-ADP1653EB
FAQS
Why does the solution size seem bigger than was expected?
This board (4.0.1) is intended as an evaluation board, with easy
access to test points and current measurements and the ability
to switch components easily. The LFCSP and all other pads are
extended so that parts can be exchanged and hand-soldered
easily. The 0 Ω resistor between the diode and the LEDs can be
replaced with either a current-sensing resistor to measure
current or a larger resistor to simulate a system with a larger
HPLED VF.
The evaluation kit includes a 9 mm × 9 mm reference (including
the two LEDs), but several alternative reference designs are
available.
Why is the logic level of INTF equal to VBAT/2, whereas all
others are 1.8 V?
It is not envisaged that customers will change between HW and I2C
modes during operation; therefore, 1.8 V logic levels are not
necessary on this pin.
Can I use an ammeter to measure HPLED currents?
Yes, but it is not recommended due to the internal resistance of
the ammeter. It can be used in the torch mode. However,
measuring the battery current with an ammeter causes the part
to hit undervoltage lockout (UVLO) at a lower battery voltage
due to the IR drop. If an ammeter is used, ensure that its range
is not set to auto, because the resistance can change during the
measurement and result in a perturbation of the control loop.
Rev. A | Page 17 of 20
EVAL-ADP1653EB
ORDERING INFORMATION
BILL OF MATERIALS
Table 5.
Description
Daughterboard
Capacitor, MLCC, 4.7 μF, 6.3 V, 0603, X5R
Reference Designator
Qty
Manufacturer/Vendor
Vendor P/N
C1
1
GRM188R60J475K
Capacitor, MLCC, 4.7 μF, 16 V, 0805, X5R 1
C2
1
Murata Manufacturing
Co., Ltd.
Murata Manufacturing
Co., Ltd.
Capacitor, MLCC, 0603 2
Diode, Schottky
White LED
C3
D1
D2, D3
1
1
2
D4 (ILED)
D10
D9
L1
R1
R2
R3, R6
R4
R5
U1
J1 to J8
GND, VBAT, HPLED, OUT
GND (4), TP (close to D1)
JP3
Mounting Header
GND, left bottom side
Mounting Header
1
1
1
1
1
1
2
1
1
1
8
4
6
1
1
1
1
10
Capacitor, MLCC, 10 μF, 6.3 V, 0805, X5R
C5, C6, C13, C15 to C19,
C30, C51
C7
Capacitor, MLCC, 6.2 pF, 0402, NP0
Capacitor, MLCC, 10 nF, 0402
C8, C9
C10
2
1
Capacitor, MLCC, 2.2 μF, 10 V, 0603, X5R
C11, C20, C21, C50
4
Capacitor, MLCC, 1 μF, 25 V, 0805, X7R
C12
1
Capacitor, MLCC, 1 nF, 0402
C14
1
Capacitor, MLCC, 47 μF, 6.3 V, 1206, X5R
C31
1
Red LED, 0402, SMD2
Green LED, 0402, SMD2
Resistor, 0402, SMD2
D5, D7
D8, D6
R20, R23, R33 to R35, R51,
R62 to R66
R19, R20, R31
R21, R27, R30
R32
2
2
11
Red LED, 0402 SMD
White LED2
SharpLED2
Inductor, 2.2 μH
Resistor, 0 Ω, 1%, 0402
Resistor, 10 kΩ, 1%, 0402
Resistor, 47.5 kΩ, 1%, 0402
Resistor, 332 kΩ, 1%, 0403
Resistor, 105 kΩ, 1%, 0404
ADP1653, 16-Lead LFCSP, 3 mm × 3 mm
Header 0.100, Single, STR, 2 Pins
Header 0.100, Single, STR, 2 Pins
Header 0.100, Single, STR, 1 Pins
Header 0.100, Single, STR, 3 Pins
Header 0.100, Single, STR, 10 Pins
Header, Female 0.100, Single, STR, 20 Pins
Header, Female 0.100, Single, STR, 10 Pins
Motherboard
Capacitor, MLCC, 100 nF, 10 V, 0402, X5R
Resistor, 1 kΩ, 1%, 0402, SMD
Resistor, 100 kΩ, 1%, 0402, SMD
Resistor, 105 kΩ, 1%, 0402, SMD
1
3
3
1
Rev. A | Page 18 of 20
GRM219R61A475K or
GRM21BR61C475K1
Diodes, Inc.
Philips Lumileds Lighting
Company
Lumex Inc.
BAT20J
LXCL-PWF3
SML-LX0402SIC-TR
Sharp Corporation
Toko America, Inc.
Vishay Dale
Vishay Dale
Vishay Dale
Vishay Dale
Vishay Dale
Analog Devices, Inc.
Sullins Electronics Inc./3M
Sullins Electronics Inc./3M
Sullins Electronics Inc./3M
Sullins Electronics Inc./3M
Sullins Electronics Inc./3M
Samtec, Inc./3M
3M
GM5BW05340AC
FDSE0312-2R2
CRCW04020R00F
CRCW04021002F
CRCW04024752F
CRCW04023323F
CRCW04021053F
ADP1653
S1012-36-ND
S1012-36-ND
S1012-36-ND
S1012-36-ND
S1012-36-ND
SSW-110-03-G-D
929974-01-36-ND
Murata Manufacturing
Co., Ltd.
Murata Manufacturing
Co., Ltd.
Vishay/Panasonic
Vishay Vitramon or
equivalent
Murata Manufacturing
Co., Ltd.
Murata Manufacturing
Co., Ltd.
Vishay Vitramon or
equivalent
Murata Manufacturing
Co., Ltd.
Lumex Inc.
Lumex Inc.
GRM155R61A104K
Vishay Dale or equivalent
Vishay Dale or equivalent
Vishay Dale or equivalent
CRCW04021001F
CRCW04021003F
CRCW04021053F
GRM21BR60J106K
ECJ-OEC1H0600
VJ0402Y103KXXA
GRM188R61A225K
GRM21BR71E105K
VJ0402Y102KXXA
GRM32ER61C476K
SML-LX0402SIC-TR
SML-LX0402SUGC-TR
EVAL-ADP1653EB
Description
Resistor, 10 kΩ, 1%, 0402, SMD
Resistor, 2.2 kΩ, 1%, 0402, SMD
Resistor, 220 kΩ, 1%, 0402, SMD
SW Push Button
IC MCU USB Periph High SPD-56QFN
Reference Designator
R22
R24, R25
R26
S1 (STROBE)
U2
Qty
1
2
1
1
1
Microchip Serial EEPROM-64K, MSOP8
U4
1
IC LDO Regulator, SO-8
IC LDO Regulator, 500 mA, 8-Lead
MSOP
CRYSTAL14
USB Connector USB Mini B, 5p
U3
U5
1
1
Y1
JP5
1
1
JP6, JP9 to JP11
JP8 on schematic (no silk),
location: center top side
JP2
JP12
JP13
JP7 (EN, STR, INT, SCL,
SDA, GP2, GP1, GND)
SW SPDT On-Off-On
Header, Male 0.100, Dual, STR, 20 Pins
Header 0.100, Single, STR, 10 Pins
Header 0.100, Single, STR, 3 Pins
Header 0.100, Single, STR, 3 Pins
Header 0.100, Single, STR, 8 Pins
1
2
Manufacturer/Vendor
Vishay Dale or equivalent
Vishay Dale or equivalent
Vishay Dale or equivalent
ITT Industries
Cypress Semiconductor
Corporation
Nu Horizons Electronics
Corp.
Analog Devices, Inc.
Analog Devices, Inc.
Vendor P/N
CRCW040210022F
CRCW040222021F
CRCW0402203F
KT11P3JM
CY7C68013A
CTX651CT
15430262-110 or 5679-0588
4
1
CTS Corporation
Delphi Corporation/
Molex
ITT Industries, Cannon
3M
TS03CBE
S1012-36, S2012-36-ND
1
1
1
8
3M
3M
3M
3M
S1012-36
S1012-36
S1012-36
S1012-36
M24LC64 or 24AA64
ADP3303-3.3
ADP1715-1.8
For one-LED applications or higher current two-LED applications, a 16 V output capacitor is recommended to achieve good stability. See the ADP1653 data sheet for
more information.
Not inserted.
Rev. A | Page 19 of 20
EVAL-ADP1653EB
ORDERING GUIDE
Model
ADP1653-EVALZ1
1
ESD CAUTION
Description
Evaluation Board
Z = RoHS Compliant Part.
©2006–2007 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
EB06298-0-3/07(A)
Rev. A | Page 20 of 20