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3A Ultra Low Dropout Linear Regulator with ENABLE

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The AP7176B is a 3.0A ultra low-dropout (LDO) linear regulator that features an enable input and a power-good output. The enable input and power-good output allow users to configure power management solutions that can meet the sequencing requirements of FPGAs, DSPs, and other applications with different start-up and power-down requirements. The AP7176B features two supply inputs, for power conversion supply and control. With the separation of the control and the power input very low dropout voltages can be reached and power dissipation is reduced. A precision reference and feedback control deliver 1.5% accuracy over load, line, and operating temperature ranges. The AP7176B is available in SO-8EP and MSOP-8EP package with an exposed PAD to reduce the junction to case resistance and extend the temperature range it can be used in.


  • VIN Range: 1.2V to 5.5V VCNTL 3.0V to 5.5V
  • Adjustable Output Voltage
  • Continuous Output Current IOUT = 3A
  • Fast Transient Response
  • Power on Reset Monitoring on VCNTL and VIN
  • Internal Softstart
  • Stable with Low ESR MLCC Capacitors


  • Notebook
  • PC
  • Netbook
  • Wireless Communication
  • Server
  • Motherboard
  • Dongle
  • Front Side Bus VTT (1.2V/3.3A)

Product Specifications

Product Parameters

Compliance (Only Automotive supports PPAP) Standard
Output options Adjustable
Iout (A) 3
Vin (Max) (V) 3.65
Vin (Min) (V) 1.2
Vout (min) 0.8
Vout (max) 3.65
Adjustabe VFB (V) 0.8
Iq (typ) (µA) 1000
Accuracy 25C 1.50%
VDROPOUT (Max) (V) at Max Current and Max Ouput Voltage 0.38
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) 1500
VCTL function yes

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Technical Documents

Recommended Soldering Techniques




Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2512 2021-04-16 2021-07-16 Qualified Additional Assembly & Test (A/T) Site