High Accuracy, Low IQ, anyCAP®
Adjustable Low Dropout Regulator
ADP3334
FEATURES
High Accuracy over Line and Load: 0.9% @ 25C,
1.8% over Temperature
500 mA Current Capability
Ultralow Dropout Voltage
Requires Only CO = 1.0 F for Stability
anyCAP = Stable with Any Type of Capacitor
(Including MLCC)
Current and Thermal Limiting
Low Noise
Low Shutdown Current: < 1.0 A (Typ)
2.6 V to 11 V Supply Range
1.5 V to 10 V Output Range
–40C to +85C Ambient Temperature Range
FUNCTIONAL BLOCK DIAGRAM
Q1
IN
OUT
ADP3334
THERMAL
PROTECTION
CC
FB
gm
DRIVER
SD
BAND GAP
REF
GND
APPLICATIONS
Cellular Phones
TFT LCD Modules
Camcorders, Cameras
Networking Systems, DSL/Cable Modems
Cable Set-Top Boxes
DSP Supplies
Personal Digital Assistants
GENERAL DESCRIPTION
The ADP3334 is available in three different package options:
The ADP3334 is a member of the ADP333x family of precision
low dropout anyCAP voltage regulators. The ADP3334 operates
with an input voltage range of 2.6 V to 11 V and delivers a
continuous load current up to 500 mA. The novel anyCAP
architecture requires only a very small 1 µF output capacitor for
stability, and the LDO is insensitive to the capacitor’s equivalent
series resistance (ESR). This makes the ADP3334 stable with any
capacitor, including ceramic (MLCC) types for space restricted
applications.
1. Excellent thermal capability, space saving 3 mm ⫻ 3 mm LFCSP.
The ADP3334 achieves exceptional accuracy of ±0.9% at room
temperature and ±1.8% over temperature, line, and load. The
dropout voltage of the ADP3334 is only 200 mV (typical) at
500 mA. This device also includes a safety current limit, thermal overload protection, and a shutdown feature. In shutdown
mode, the ground current is reduced to less than 1 µA. The
ADP3334 has low quiescent current of 90 µA (typical) in light
load situations.
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. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective companies.
2. Popular low profile MSOP-8.
3. Traditional thermal enhanced SOIC-8.
ADP3334
VIN
IN
OUT
IN
OUT
VOUT
R1
CIN
1F
FB
SD
GND
CNR
COUT
1F
R2
OFF
ON
Figure 1. Typical Application Circuit
© 2003 Analog Devices, Inc. All rights reserved.
ADP3334–SPECIFICATIONS1, 2, 3 (V
IN
= 6.0 V, CIN = COUT = 1.0 F, TA = –40C to +85C, unless otherwise noted.)
Parameter
Symbol
Conditions
Min
OUTPUT
Voltage Accuracy4
VOUT
VIN = VOUT(NOM) + 0.4 V to 11 V
IL = 0.1 mA to 500 mA
TA = 25°C
VIN = VOUT(NOM) + 0.4 V to 11 V
IL = 0.1 mA to 500 mA
TA = 85°C
VIN = VOUT(NOM) + 0.4 V to 11 V
IL = 0.1 mA to 500 mA
TJ = 150°C
VIN = VOUT(NOM) + 0.4 V to 11 V
IL = 0.1 mA
TA = 25°C
IL = 0.1 mA to 500 mA
TA = 25°C
VOUT = 98% of VOUT(NOM)
IL = 500 mA
IL = 300 mA
IL = 100 mA
IL = 1 mA
VIN = VOUT(NOM) + 1 V
f = 10 Hz–100 kHz, CL = 10 µF
IL = 500 mA, CNR = 10 nF
f = 10 Hz–100 kHz, CL = 10 µF
IL = 500 mA, CNR = 0 nF
Line Regulation4
Load Regulation
Dropout Voltage
Peak Load Current
Output Noise
GROUND CURRENT5
In Regulation
VDROP
ILDPK
VNOISE
IGND
In Dropout
IGND
In Shutdown
IGNDSD
SHUTDOWN
Threshold Voltage
SD Input Current
Output Current in Shutdown
VTHSD
ISD
IOSD
Max
Unit
–0.9
+0.9
%
–1.8
+1.8
%
–2.3
+2.3
%
–2–
mV/V
0.04
mV/mA
400
250
140
45
mV
mV
mV
mV
mA
µV rms
µV rms
4.5
2.6
0.5
90
150
10
6
1.5
130
450
mA
mA
mA
µA
µA
0.9
3
µA
1.2
0.01
0.4
3
5
V
V
µA
µA
2.0
NOTES
1
All limits at temperature extremes are guaranteed via correlation using standard statistical quality control (SQC) methods.
2
Ambient temperature of 85°C corresponds to a junction temperature of 125°C under pulsed full load test conditions.
3
Application stable with no load.
4
VIN = 2.6 V to 11 V for V OUT(NOM) £ 2.2 V.
5
Ground current includes current through external resistors.
Specifications subject to change without notice.
0.04
200
140
60
10
800
27
IL = 500 mA
IL = 300 mA
IL = 50 mA
IL = 0.1 mA
VIN = VOUT(NOM) – 100 mV
IL = 0.1 mA
SD = 6 V, VIN = 11 V
LDO OFF
LDO ON
0 £ SD £ 5 V
SD = 2 V, VIN = 11 V
Typ
ADP3334
ABSOLUTE MAXIMUM RATSINGS*
PIN FUNCTION DESCRIPTIONS
Input Supply Voltage . . . . . . . . . . . . . . . . . . . –0.3 V to +16 V
Shutdown Input Voltage . . . . . . . . . . . . . . . . –0.3 V to +16 V
Power Dissipation . . . . . . . . . . . . . . . . . . . . Internally Limited
Operating Ambient Temperature Range . . . . –40°C to +85°C
Operating Junction Temperature Range . . . –40°C to +150°C
Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C
␪JA 2-Layer SOIC-8 . . . . . . . . . . . . . . . . . . . . . . . . 122.3°C/W
␪JA 4-Layer SOIC-8 . . . . . . . . . . . . . . . . . . . . . . . . . 86.6°C/W
␪JA 2-Layer LFCSP-8 . . . . . . . . . . . . . . . . . . . . . . . . . . 62°C/W
␪JA 4-Layer LFCSP-8 . . . . . . . . . . . . . . . . . . . . . . . . . . 48°C/W
␪JA 2-Layer MSOP-8 . . . . . . . . . . . . . . . . . . . . . . . . . 220°C/W
␪JA 4-Layer MSOP-8 . . . . . . . . . . . . . . . . . . . . . . . . . 158°C/W
Lead Temperature Range (Soldering 6 sec) . . . . . . . . . . 300°C
Mnemonic
Function
GND
SD
Ground Pin.
Shutdown Control. Pulling this pin low
turns on the regulator.
Regulator Input.
IN
*Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only. Functional operation of the
device at these or any other conditions above those listed in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
OUT
Output. Bypass to ground with a 1.0 µF or
larger capacitor.
FB
Feedback Input. FB should be connected to
an external resistor divider that sets the
output voltage.
NC
No Connection.
PIN CONFIGURATIONS
OUT 1
OUT 2
FB 3
8
IN
OUT 1
8
IN
GND 1
8
NC
ADP3334ARM
7
IN
7
IN
SD 2
ADP3334AR
7
FB
TOP VIEW
(Not to Scale)
OUT 2
6
SD
FB 3
6
SD
IN 3
TOP VIEW
(Not to Scale)
6
OUT
5
GND
NC 4
5
GND
IN 4
5
OUT
NC 4
NC = NO CONNECT
ADP3334ACP
TOP VIEW*
NC = NO CONNECT
*PINS UNDERSIDE
NC = NO CONNECT
ORDERING GUIDE
Model
Package
Output Description
ADP3334AR
ADJ
ADP3334ACP
ADJ
ADP3334ARM
ADJ
Package
Option
Standard Small Outline
RN-8
Package (SOIC-8)
Lead Frame Chip
CP-8
Scale Package (LFCSP)
3 mm ⫻ 3 mm Body, 8-Lead
MSOP Package
RM-8
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection. Although
the ADP3334 features proprietary ESD protection circuitry, permanent damage may occur on
devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are
recommended to avoid performance degradation or loss of functionality.
–3–
Brand
LLA
LLA
ADP3334
OUTLINE DIMENSIONS
8-Lead Mini Small Outline Package [MSOP]
(RM-8)
8-Lead Standard Small Outline Package [SOIC]
Narrow Body
(RN-8)
Dimensions shown in millimeters
Dimensions shown in millimeters and (inches)
3.00
BSC
5.00 (0.1968)
4.80 (0.1890)
8
4.00 (0.1574)
3.80 (0.1497)
8
5
1
4
5
4.90
BSC
3.00
BSC
6.20 (0.2440)
5.80 (0.2284)
1
4
PIN 1
1.27 (0.0500)
BSC
0.25 (0.0098)
0.10 (0.0040)
COPLANARITY
SEATING
0.10
PLANE
0.50 (0.0196)
45
0.25 (0.0099)
1.75 (0.0688)
1.35 (0.0532)
0.65 BSC
1.10 MAX
0.15
0.00
8
0.25 (0.0098) 0 1.27 (0.0500)
0.41 (0.0160)
0.19 (0.0075)
0.51 (0.0201)
0.33 (0.0130)
0.38
0.22
COPLANARITY
0.10
COMPLIANT TO JEDEC STANDARDS MS-012AA
CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN
0.23
0.08
SEATING
PLANE
COMPLIANT TO JEDEC STANDARDS MO-187AA
8-Lead Frame Chip Scale Package [LFCSP]
3 mm 3 mm Body
(CP-8)
Dimensions shown in millimeters
3.00
BSC SQ
0.60
0.42
0.24
0.60 MAX
PIN 1 INDICATOR
0.45
PIN 1
INDICATOR
2.75
BSC SQ
0.50
BSC
0.90 MAX
0.85 NOM
0.05 MAX
0.01 NOM
0.30
0.23
0.18
BOTTOM
VIEW
0.25
MIN
0.80 MAX
0.65 NOM
12 MAX
SEATING
PLANE
1
2
TOP
VIEW
8
0
1.60
1.45
1.30
0.20 REF
DIMENSIONS SHOWN ARE IN MILLIMETERS
–10–
1.50
REF
1.89
1.74
1.59
0.80
0.40