Diodes AP2132B User Manual
2A CMOS LDO REGULATOR AP2132B
Data Sheet
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
reaches 92% of its rating value. And it operates
OUT
with V
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.
as low as 1.4V and V
IN
voltage 5V with
CTRL
Features
Adjustable Output: 0.8V to 3.0V
•
• Low Dropout Voltage: 300mV@ I
V
=1.2V
OUT
• Over Current and Over Temperature Protection
• Enable Pin
• PSOP-8 Package with Thermal Pad
• Maximum Output Current: 2A
• High Output Voltage Accuracy: 2%
• V
• Excellent Line/Load Regulation
Power Good Signal
OUT
OUT
=2A,
Applications
• Notebook
PS
OP-8
Figure 1. Package Type of AP2132B
Oct. 2012
Rev. 1. 1 BCD Semiconductor Manufacturing Limited
1
Data Sheet
2A CMOS LDO REGULATOR AP2132B
Pin Configuration
MP Package
(PSOP-8)
8
PG
EN
1
2
GND
ADJ
7
Pin Description
Pin
Number
1 PG Assert high once V
2 EN Enable input
3 VIN Input voltage
4 VCTRL Input voltage for controlling circuit
5 NC Not connected
6 VOUT
7 ADJ
8 GND Ground
Pin
Name
VIN
VCTRL
3
4
6
5
VOUT
NC
Figure 2. Pin Configuration of AP2132B (Top View)
Function
reaches 92% of its rating voltage
OUT
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
=0.8(R1+R2)/R2
OUT
Oct. 2012
Rev. 1. 1 BCD Semiconductor Manufacturing Limited
2
Data Sheet
2A CMOS LDO REGULATOR AP2132B
Functional Block Diagram
Figure 3. Functional Block Diagram of AP2132B
Oct. 2012
Rev. 1. 1 BCD Semiconductor Manufacturing Limited
3
p
Data Sheet
2A CMOS LDO REGULATOR AP2132B
Ordering Information
AP2132B -
Circuit Type G1: Green
Package Blank: Tube
MP: PSOP-8 TR: Tape & Reel
1.2: Fixed Output 1.2V
1.5: Fixed Output 1.5V
1.8: Fixed Output 1.8V
2.5: Fixed Out
ut 2.5V
Packing
Type
Package
Temperature
Range
Version
Description
Part Number Marking ID
AP2132BMP-1.2G1 2132B-1.2G1 Tube
AP2132BMP-1.2TRG1 2132B-1.2G1 Tape & Reel
AP2132BMP-1.5G1 2132B-1.5G1 Tube
PSOP-8 -40 to 85 ºC
Each fixed
output version
integrates ADJ
version
AP2132BMP-1.5TRG1 2132B-1.5G1 Tape & Reel
AP2132BMP-1.8G1 2132B-1.8G1 Tube
AP2132BMP-1.8TRG1 2132B-1.8G1 Tape & Reel
AP2132BMP-2.5G1 2132B-2.5G1 Tube
AP2132BMP-2.5TRG1 2132B-2.5G1 Tape & Reel
BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant
and Green.
Oct. 2012
Rev. 1. 1 BCD Semiconductor Manufacturing Limited
4
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