Data Sheet
2A CMOS LDO REGULATOR
General Description
The AP2132B series are positive voltage regulator
ICs fabricated by CMOS process. The ICs consist of
a voltage reference, an error amplifier, a power
transistor, a resistor network for setting output
voltage, a current limit circuit for current protection,
and a chip enable circuit.
The AP2132B series have features of large current,
low dropout voltage, high output voltage accuracy,
low input voltage. The AP2132B provides a power
good (PG) signal to indicate if the voltage level of
V
OUT
reaches 92% of its rating value. And it operates
with V
IN
as low as 1.4V and V
CTRL
voltage 5V with
output voltage programmable as low as 0.8V.
The AP2132B are available in 1.2V, 1.5V, 1.8V, 2.5V
fixed output voltage versions and adjustable output
voltage version. The fixed versions integrate the
adjust resistors. It is also available in an adjustable
version, which can set the output voltage with
external resistor. If the pin of adjustable output
voltage is to ground, it will switch to fixed output
voltage.
AP2132B series are available in PSOP-8 package.
AP2132B
Features
•
•
•
•
•
•
•
•
•
Adjustable Output: 0.8V to 3.0V
Low Dropout Voltage: 300mV@ I
OUT
=2A,
V
OUT
=1.2V
Over Current and Over Temperature Protection
Enable Pin
PSOP-8 Package with Thermal Pad
Maximum Output Current: 2A
High Output Voltage Accuracy: 2%
V
OUT
Power Good Signal
Excellent Line/Load Regulation
Applications
•
Notebook
PSOP-8
Figure 1. Package Type of AP2132B
Oct. 2012 Rev. 1. 1
1
BCD Semiconductor Manufacturing Limited
Data Sheet
2A CMOS LDO REGULATOR
Pin Configuration
MP Package
(PSOP-8)
AP2132B
PG
EN
VIN
VCTRL
1
2
3
4
8
7
6
5
GND
ADJ
VOUT
NC
Figure 2. Pin Configuration of AP2132B (Top View)
Pin Description
Pin
Number
1
2
3
4
5
6
7
8
Pin
Name
PG
EN
VIN
VCTRL
NC
VOUT
ADJ
GND
Enable input
Function
Assert high once V
OUT
reaches 92% of its rating voltage
Input voltage
Input voltage for controlling circuit
Not connected
Regulated output voltage
Adjust output: when connected to ground, the output voltage is set by
internal resistors; when external feedback resistors are connected, the
output voltage will be V
OUT
=0.8(R1+R2)/R2
Ground
Oct. 2012 Rev. 1. 1
2
BCD Semiconductor Manufacturing Limited
Data Sheet
2A CMOS LDO REGULATOR
Absolute Maximum Ratings (Note 1)
Parameter
Input Voltage
Input Voltage for Controlling Circuit
Enable Input Voltage
Output Current
Thermal Resistance (Note 2)
Operating Junction Temperature
Storage Temperature Range
Lead Temperature (Soldering, 10sec)
ESD (Machine Model)
ESD (Human Body Model)
AP2132B
Symbol
V
IN
V
CTRL
V
EN
I
OUT
θ
JA
T
J
T
STG
T
LEAD
Value
6.0
-0.3 to 6.0
2.5
53
150
-65 to 150
260
200
2000
Unit
V
V
A
ºC/W
ºC
ºC
ºC
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.
Note 2:
θ
JA
is measured with the component mounted on 2-Layer FR-4 PCB board with 1.0cm*1.0cm thermal
sink pad in free air.
Recommended Operating Conditions
Parameter
Input Voltage
Input Voltage for Controlling
Circuit
Operating Ambient Temperature
Range
Symbol
V
IN
V
CTRL
T
A
Min
1.4
4.5
-40
Max
5.5
5.5
85
Unit
V
V
°C
Oct. 2012 Rev. 1. 1
5
BCD Semiconductor Manufacturing Limited
Microcontroller MCU
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