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Data Sheet

2A CMOS LDO REGULATOR AP2132B

Oct. 2012

Rev. 1. 1 BCD Semiconductor Manufacturing Limited

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

OUT

reaches 92% of its rating value. And it operates

with V

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.

Features

•

Adjustable Output: 0.8V to 3.0V

• Low Dropout Voltage: 300mV@ I

OUT

=2A,

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

Figure 1. Package Type of AP2132B

OP-8

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