Data Sheet
600mA CMOS LDO REGULATOR WITH ENABLE
General Description
The AP2112 is CMOS process low dropout linear
regulator with enable function, the regulator delivers
a guaranteed 600mA (min.) continuous load current.
The AP2112 provides 1.2V, 1.8V, 2.5V, 2.6V, 2.8V
and 3.3V regulated output, and provides excellent
output accuracy ±1.5%, also provides an excellent
load regulation, line regulation and excellent load
transient performance due to very fast loop response.
The AP2112 has built-in auto discharge function.
The regulator features low power consumption, and
provides SOT-23-5, SOT-89-5, and SOIC-8 packages.
AP2112
Features
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Output Voltage Accuracy: ±1.5%
Output Current: 600mA (Min.)
Foldback Short Current Protection: 50mA
Enable Function to Turn ON/OFF V
OUT
Low Dropout Voltage (3.3V): 250mV (Typ.)
@I
OUT
=600mA
Excellent Load Regulation: 0.2%/A (Typ.)
Excellent Line Regulation: 0.02%/V (Typ.)
Low Quiescent Current: 55µA (Typ.)
Low Standby Current: 0.01µA (Typ.)
Low Output Noise: 50µV
RMS
PSRR: 100Hz -65dB, 1kHz -65dB
OTSD Protection
Stable with 1.0µF Flexible Cap: Ceramic,
Tantalum and Aluminum Electrolytic
Operation Temperature Range: -40°C to 85°C
ESD: MM 400V, HBM 4000V
Applications
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Laptop Computer
Portable DVD
LCD Monitor
SOT-23-5
SOT-89-5
SOIC-8
Figure 1. Package Types of AP2112
Mar. 2012
Rev. 1. 4
1
BCD Semiconductor Manufacturing Limited
Data Sheet
600mA CMOS LDO REGULATOR WITH ENABLE
Pin Configuration
K Package
SOT-23-5
AP2112
M Package
SOIC-8
R5/R5A Package
SOT-89-5
R5
VOUT
5
R5A
VIN
4
1
EN
2
GND
3
NC
Figure 2. Pin Configuration of AP2112 (Top View)
Pin Descriptions
PIN No.
SOT-23-5
1
2
3
SOT-89-5
4
2
3 (R5)
1 (R5A)
1 (R5)
3 (R5A)
5
SOIC-8
8
6, 7
5
Name
VIN
GND
EN
Input Voltage
GND
Descriptions
Chip Enable, H – normal work, L – shutdown output
4
5
2, 3, 4
1
NC
VOUT
No Connection
Output Voltage
Mar. 2012
Rev. 1. 4
2
BCD Semiconductor Manufacturing Limited
Data Sheet
600mA CMOS LDO REGULATOR WITH ENABLE
Absolute Maximum Ratings (Note 1)
Parameter
Power Supply Voltage
Operating Junction Temperature
Range
Storage temperature Range
Lead Temperature (Soldering, 10
Seconds)
Thermal Resistance
（Junction
to
Ambient）(No Heatsink)
ESD (Machine Model)
ESD (Human Body Model)
AP2112
Symbol
V
CC
T
J
T
STG
T
LEAD
SOT-23-5
θ
JA
SOIC-8
SOT-89-5
Value
6.5
150
-65 to 150
260
184
114
120
400
4000
Unit
V
ºC
ºC
ºC
°C /W
V
V
Note 1: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to
the device. These are stress ratings only, and functional operation of the device at these or any other conditions
beyond those indicated under “Recommended Operating Conditions” is not implied. Exposure to “Absolute
Maximum Ratings” for extended periods may affect device reliability.
Recommended Operating Conditions
Parameter
Supply Voltage
Ambient Operation
Range
Temperature
Symbol
V
IN
T
A
Min
2.5
-40
Max
6.0
85
Unit
V
°C
Mar. 2012
Rev. 1. 4
5
BCD Semiconductor Manufacturing Limited
Embedded System
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