Advanced Power
Electronics Corp.
APU8850-HF-3
150mA Ultra-Low Dropout Adjustable and Fixed Regulators
Features
Description
Stable with 2.2µF Low ESR Ceramic Capacitor
Voltage Reference Accuracy of 2%
Wide Operating Range: 4.5V ~ 25V
Quiescent Current in Shutdown of 5µA
Current Limit and Thermal Shutdown
Logic Input Enable Pin
RoHS Compliant halogen-free SOT-89, ESOP-8,
J-lead 2021-8, TSOT-23-5 and SOT-23-5 Packages
The APU8850 device is an efficient linear voltage
regulator with better than 2% initial voltage accuracy,
very low dropout voltage and very low ground current,
designed especially for hand-held, battery-powered
applications. Other features of the device are TTL
compatible enable/shutdown control input, currentlimiting and thermal shutdown.
The APU8850-3 is available in fixed and adjustable
output voltage versions in a small SOT-23-5, TSOT-23-5,
J-lead 2021-8, ESOP-8 or SOT-89 package.
Applications
Laptop, Notebook and Palmtop computers
Battery Powered Equipments
PCMCIA Vcc and Vpp Regulator
Consumer Electronics
High Efficiency Linear Power Supplies
Typical Application
VIN
VIN
VOUT
R1
+
C1
2.2uF
+
GND
C2
2.2uF
VOUT
Vo= 1.25 x (1+R1/R2)
R2
EN
Enable
ADJ
Figure 1 - Typical application of the APU8850-3 adjustable voltage regulator.
VIN
VIN
C1
2.2uF
VOUT=3.3V
VOUT
+
+
GND
Enable
EN
CBYP
+
C2
2.2uF
C3
1000pF
Figure 2 - Typical application of the APU8850-33-3
Figure 3 - Typical application of the APU8850-xx-3 in SOT-89
Ordering information
PART NUMBER
APU8850xx-3TR
APU8850xx-15-3TR
APU8850xx-18-3TR
APU8850xx-25-3TR
APU8850xx-28-3TR
APU8850xx-30-3TR
APU8850xx-33-3TR
APU8850xx-50-3TR
OUTPUT
VOLTAGE
Adj
1.5V
1.8V
2.5V
2.8V
3.0V
3.3V
5.0V
xx = package code
Y5: SOT-23-5
TY5: TSOT-23-5
U: J-lead 2021-8
G: SOT-89
MP: ESOP-8
These products are shipped on tape and reel, 3000 pieces per reel (SOT-89 1000pcs/reel). The device is
rated MSL3 for moisture sensitivity, and the reel is shipped sealed inside a moisture barrier bag.
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201104228-3
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Advanced Power
Electronics Corp.
APU8850-HF-3
Absolute Maximum Ratings
Input Voltage (V IN) .....................................................
Enable Input Voltage .................................................
Storage Temperature Range .......................................
Operating Junction Temperature Range ......................
27V
27V
-65°C to 150°C
-40°C to 85°C
Thermal Resistance Junction to Ambient (Rthja)
256oC/W
SOT-23-5L/TSOT-23-5L
SOT-89
300oC/W
ESOP-8
150oC/W
J-lead 2021-8
300oC/W
Pin Configuration
SOT-89
ESOP-8 (*Adj/Fixed)
SOT-23-5L/TSOT-23-5L
TOP VIEW
TOP VIEW
EN GND VIN
EN GND VIN
Adjustable
Fixed
NC
*NC/CBYP
*ADJ/NC
ADJ
VOUT
CBYP
J-lead 2021-8
( Top View )
(Top View)
VOUT
1
8
2
7
GND
3
6
4
5
VIN
GND
NC
EN
( Top View )
TAB is VIN
EN 1
8 GND
ADJ 2
7 GND
VOUT 3
6 GND
VIN 4
5 GND
VOUT
1
2
GND
VIN
3
VOUT
Electrical Specifications
Unless otherwise specified, these specifications apply over C IN=CO=2.2F, IO=100uA, VIN(MIN)=4.5V, CBYP=470pF
(for fixed voltage devices), V EN=2V and TA=25oC. Typical values refer to T A=25oC. Low duty cycle pulse testing is used
which keeps junction and case temperatures equal to the ambient temperature.
Parameter
Reference Voltage
Line Regulation
Load Regulation (Note 1)
SYM
Vo
UNITS
TYP
MAX
-2
-
2
%
-
0.1
-
%/V
%
VO + 2V<VIN<25V, IO=1mA
∆VL
VIN=VO+2V
-
0.5
-
IO=100uA
-
1
-
IO=100mA
-
1.2
-
VEN=2V, IO=100uA
-
250
-
uA
VEN=0V or Open
-
1
-
uA
VIN=4.5V, VO=VADJ
-
0.1
-
uA
-
mA
VDROP
Ground Current (Note 3)
IQ
IQ(SD)
Adjust Pin Current
IADJ
Current Limit
ICL
Short Current
IZ
Enable Pin Input LO Voltage
MIN
∆VI
Dropout Voltage (Note 2)
Ground Current-SD Activated
TEST CONDITION
VEN(L)
VEN(H)
V
200
-
VO=0V
-
175
-
mA
Regulator OFF
-
-
0.8
V
Regulator ON
2
-
-
V
Enable Pin Input LO Current
VEN(L) =0V
-
0.01
-
uA
Enable Pin Input HI Current
VEN(H)=2V
-
10
-
uA
Enable Pin Input HI Voltage
Ripple Rejection
PSRR
CBYP=1nF, COUT=2.2uF, fRIPPLE = 1kHz
Over Temperature Shutdown
Over Temperature Shutdown Hysteresis
-
70
-
dB
-
150
-
o
C
-
o
C
-
10
Note 1: Low duty cycle pulse testing with Kelvin connections is required in order to maintain accurate data.
Note 2: Dropout voltage is defined as the minimum differential voltage between VIN and VOUT required to maintain regulation at VOUT.
It is measured when the output voltage drops 1% below its nominal value.
Note 3: Ground current is the regulator quiescent current plus the pass transistor current. The total current from the supply is the sum
of the load current plus the ground pin current.
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Advanced Power
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APU8850-HF-3
Pin Descriptions
PIN SYMBOL
PIN DESCRIPTION
The input pin of the regulator. Typically a large storage capacitor is connected from
this pin to ground to ensure that the input voltage does not sag below the minimum
VIN
dropout voltage during the load transient response. This pin must always be higher
than VOUT by at least the amount of the dropout voltage and some margin in order
for the device to regulate properly.
Ground pin. This pin must be connected to the lowest potential in the system and
GND
all other pins must be at higher potential with respect to this pin.
Enable pin. A low signal or left open on this pin shuts down the output. This pin
EN
must be tied HI or to VIN for normal operation.
Adj (Adjustable only)
A resistor divider from this pin to the VOUT pin and ground sets the output voltage.
CBYP (Fixed only)
A 470 to 1000pF bypass capacitor connected to this pin reduces the output noise.
The output of the regulator. A capacitor with a minimum value of 2.2uF and a
VOUT
maximum ESR of 1Ω must be connected from this pin to ground to ensure stability.
Block Diagram
VIN
1
ADJ
4
5
VOUT
+
-
Thermal
Shutdown
+
GND
2
Current
Limit
3
EN
Figure 4 - APU8850Y5 block diagram for adjustable output
VIN
VIN
CBYP
1
4
2
3
VOUT
VOUT
5
+
+
-
-
+
+
Thermal
Shutdown
GND
2
Thermal
Shutdown
Current
Limit
GND
3
EN
Figure 5 - APU8850Y5 block diagram for fixed output voltage
1
Current
Limit
Figure 6 - APU8850G block diagram for fixed output voltage
THIS PRODUCT IS SENSITIVE TO ELECTROSTATIC DISCHARGE, PLEASE HANDLE WITH CAUTION.
USE OF THIS PRODUCT AS A CRITICAL COMPONENT IN LIFE SUPPORT OR OTHER SIMILAR SYSTEMS IS NOT AUTHORIZED.
APEC DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT
DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
APEC RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE
RELIABILITY, FUNCTION OR DESIGN.
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Advanced Power
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APU8850-HF-3
Typical Performance Characteristics
VIN=5V, VEN=5V, VOUT=3.3V
Output Voltage vs. Temperature
3.37
Output Voltage
3.36
3.35
3.34
3.33
3.32
3.31
Iout=0mA
Iout=10mA
Iout=20mA
3.3
-40
-20
0
20
40
60
80
100
Temperature(°C)
VIN=5V, VEN=5V, VOUT=3.3V
ADJ Voltage vs. Temperature
1. 2 64
ADJ Voltage
1. 26
1. 2 56
1. 2 52
1. 2 48
1. 2 44
1. 24
-40
Iout=10mA
Iout=0mA
-20
0
20
40
60
Iout=20mA
80
100
Temperature(°C)
VIN=4.5V, VOUT=3.3V, IOUT=10mA~200mA
Load Transient
IOUT
VOUT
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APU8850-HF-3
Typical Performance Characteristics (cont.)
Quiescent Current vs. Temperature
Quiescent Current vs. Input Voltage
VIN=4.5V, VOUT=3.3V, IOUT=10mA
VIN=4.5V~20V, VOUT=3.3V
300
350
300
Quiescent Current(uA)
Quiescent Current(uA)
250
200
150
100
250
200
150
100
50
50
0
0
-40
-20
0
20
40
60
80
100
4.5
125
5
6
7
8
9
11
12
13
14
15
16
17
18
19
20
Output Voltage vs. Input Voltage
Output Voltage vs. Output Current
VIN=4.5V, VOUT=3.3V, IOUT=10mA~200mA
VIN=4.5V~20V, VOUT=3.3V
3.32
3.312
3.31
3.311
3.3
3.31
Output Voltage(V)
Output Voltage(V)
10
Input Voltage(V)
Temperature('C)
3.29
3.28
3.309
3.308
3.27
3.307
3.26
3.306
Iout=0mA
3.25
20
40
60
80
100
120
140
160
180
200
Iout=10mA
Iout=20mA
3.305
4.5
5
6
7
8
9
Output Current(mA)
10
11
12
13
14
15
16
17
18
19
20
Input Voltage(V)
Dropout Voltage vs. Temperature
Dropout Voltage vs. Output Current
VIN=4.5V, VOUT=3.3V
VIN=4.5V, VOUT=3.3V, IOUT=10mA~200mA
1.2
0.9
0.8
Dropout Voltage(V)
1
Dropout Voltage(V)
0.7
0.6
0.5
0.4
0.3
0.8
0.6
0.4
0.2
0.2
0.1
Iout=0mA
Iout=10mA
0
0
0
-40
-20
0
20
40
Temperature('C)
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60
80
100
20
40
60
80
100
120
140
160
180
200
125
Output Current(mA)
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Advanced Power
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APU8850-HF-3
Package Dimensions: SOT-23-5L
Millimeters
SYMBOLS
MIN
NOM
MAX
A
1.00
1.10
1.30
A1
0.00
---
0.10
A2
0.70
0.80
0.90
b
0.35
0.40
0.50
C
0.10
0.15
0.25
D
2.70
2.90
3.10
E
1.50
1.60
1.80
e
---
1.90(TYP)
---
H
2.60
2.80
3.00
L
0.37
---
---
θ1
1°
5°
9°
e2
---
0.95(TYP)
---
Note 1: Package body sizes exclude mold flash protrusions or gate burrs.
Note 2: Tolerance ± 0.1000 mm (4mil) unless otherwise specified.
Note 3: Coplanarity:0.1000 mm
Note 4: Dimension L is measured in gage plane.
Marking Information
Product: RZ = APU8850Y5
Output voltage: Blank : ADJ version
RZ&SS
C : 1.5V
D : 1.8V
F : 2.5V
G : 2.8V
H : 3.0V
I : 3.3V
J : 5.0V
Date/lot code
For details of how to convert this
to standard YYWW date code format,
please contact us directly.
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APU8850-HF-3
Package Dimensions: J-lead 2021-8
D
8
7
6
5
E2
E1
1
2
Millimeters
SYMBOLS
3
4
e
B
MIN
NOM
MAX
E
1.80
2.10
2.40
E1
1.65
1.75
1.85
E2
2.00
2.20
2.40
L
0.35
0.45
0.55
A
---
---
1.10
0.00
---
0.10
A2
0.70
0.90
1.00
D
1.80
2.00
2.20
B
0.15
--
0.35
C
0.10
0.15
0.20
θ
0°
4°
8°
e
0.5bsc
A2
C
A
A1
θ
L
E
1. All dimensions are in millimeters.
Marking Information
2. Dimensions do not include mold protrusions.
Product: RZ = APU8850U
Output voltage:
RZ&SS
Blank : ADJ version G : 2.8V
C : 1.5V
H : 3.0V
D : 1.8V
I : 3.3V
E : 2.5V
J : 5.0V
Date/lot code
For details of how to convert this
to standard YYWW date code format,
please contact us directly.
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APU8850-HF-3
Package Dimensions: SOT-89
C
J
D
B
2
1
Millimeters
SYMBOLS
MIN
NOM
MAX
A
4.40
-
4.60
B
4.05
-
4.25
C
1.40
-
1.75
E
2.40
-
2.60
F
0.89
-
1.20
I
0.35
-
0.55
H
----
1.50
----
G
----
3.00
----
J
1.40
-
1.60
K
0.35
-
0.43
E
3
F
I
H
K
G
1. All dimensions are in millimeters.
A
2. Dimensions do not include mold protrusions.
Marking Information
Product: APU8850
Output Voltage :
8850X
YWWS
Blank : ADJ
C : 1.5V
D : 1.8V
F : 2.5V
G : 2.8V
H : 3.0V
I : 3.3V
J : 5.0V
Date Code (YWWS)
Y: Year
WW: Work week
S: Lot code sequence
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APU8850-HF-3
Package Dimensions: ESOP-8
B
X
P
Millimeters
SYMBOLS
Y Q
Z
H
C
A
MIN
MAX
A
5.70
5.95
6.20
B
4.80
4.95
5.10
C
3.80
3.90
4.00
D
0°
4°
8°
E
0.40
0.84
1.27
F
0.19
0.23
0.26
M
0.00
0.13
0.25
H
0.32
0.42
0.51
L
1.35
1.56
1.76
G
G
NOM
1.27 TYP.
P
1.65
2.13
2.60
Q
1.65
2.13
2.60
X
3.25 REF.
Y
0.20 REF.
Z
0.47 REF.
1. All dimensions are in millimeters.
2. Dimensions do not include mold protrusions.
L
F
D
M
E
Marking Information
Product: APU8850MP
Output Voltage :
8850MP-XX
YWWSS
Blank : ADJ
15 : 1.5V
18 : 1.8V
25 : 2.5V
28 :
30 :
33 :
50 :
2.8V
3.0V
3.3V
5.0V
Date/lot Code (YWWSS)
Y: Year
WW: Work week
SS: Lot code sequence
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