Diodes Incorporated
SO 8

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Peak 3A CMOS LDO Regulator with ENABLE and Power Good

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The AP2132A is a positive voltage regulator IC fabricated by CMOS process. The IC consists 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 has features of large current, low-dropout voltage, high output-voltage accuracy and low input voltage. The AP2132A provides a power-good (PG) signal to indicate if the voltage level of VOUT reaches 92% of its rating value. And it operates with a VIN as low as 1.4V and VCTRL voltage 5V with output voltage programmable as low as 0.6V.

The AP2132A is available in 1.8V fixed output voltage version and adjustable output voltage version. The fixed version integrates 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 is available in the PSOP-8 package.


  • Adjustable Output: 0.6V to 3.0V
  • Low-Dropout Voltage: 300mV at IOUT = 2A, VOUT = 1.2V
  • Overcurrent and Overtemperature Protection
  • Enable Pin
  • PSOP-8 Package with Thermal Pad
  • Maximum Output Current: 3A (Peak)
  • High Output-Voltage Accuracy: 2%
  • VOUT Power-Good Signal
  • Excellent Line/Load Regulation
  • Lead-Free Finish; RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. “Green” Device (Note 3)
  • For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/


  • Notebooks

Product Specifications

Product Parameters

Iq (max) (µA) 300
Iq (typ) (?A) 300
AEC Qualified No
Compliance (Only Automotive supports PPAP) Standard
Type LDO
Output options Adjustable & Fixed
Iout (A) 3
Vin (Max) (V) 5.5
Vin (Min) (V) 1.4
Vout (min) 0.6
Vout (max) 3.3
Fixed Vout (V) 1.2, 1.5, 1.8, 2.5
Adjustable VFB (V) 0.6
Accuracy 25C 2
VDROPOUT (Max) (V) at Max Current and Max Ouput Voltage 0.45
PSRR (dB) 1kHz 60
Operating Temperature (Ambient) (°C) -40 to 85
Enable Active Yes (High)
Channels 1
Output Discharge No
Power Good Open Drain
Reverse Protection No
VCTL Function Yes

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