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Data Sheet

Peak 3A CMOS LDO Regulator with Enable and Power Good AP2132A

Mar. 2012 Rev 1.0 BCD Semiconductor Manufacturing Limited

General Description

The AP2132A 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 AP2132A have features of large current, low

dropout voltage, high output voltage accuracy and

low input voltage. The AP2132A provide a power

good (PG) signal to indicate if the voltage level of

OUT

reaches 92% of its rating value. And it operates

with a V

as low as 1.4V and V

CTRL

voltage 5V with

output voltage programmable as low as 0.6V.

The AP2132A 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.

The AP2132A series are available in PSOP-8

package.

Features

•

Adjustable Output: 0.6V to 3.0V

• Low Dropout Voltage: 300mV at I

OUT

=2A,

OUT

=1.2V

• Over Current and Over Temperature Protection

• Enable Pin

• PSOP-8 Package with Thermal Pad

• Maximum Output Current: 3A (Peak)

• High Output Voltage Accuracy: 2%

• V

OUT

Power Good Signal

• Excellent Line/Load Regulation

Applications

• Notebook

Figure 1. Package Type of AP2132A

PSOP-8

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