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Peak 3A CMOS LDO Regulator with ENABLE and Power Good

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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 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 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.


  • Adjustable Output: 0.6V to 3.0V
  • Low Dropout Voltage: 300mV at IOUT=2A, VOUT=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%
  • VOUT Power Good Signal
  • Excellent Line/Load Regulation


  • Notebook

Product Specifications

Product Parameters

Compliance (Only Automotive supports PPAP) Standard
Output options Adjustable & Fixed
Iout (A) 3
Vin (Max) (V) 5.5
Vin (Min) (V) 1.4
Vout (min) 0.6
Vout (max) 5.5
Fixed Vout (V) 1.2, 1.5, 1.8, 2.5
Adjustabe VFB (V) 0.6
Iq (typ) (µA) 300
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 (°C)
Enable Active H
Channels 1
Output Discharge no
Power Good open drain
Iq (max)(µA) 300
VCTL function yes

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