Diodes Incorporated

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300MA, Low Quiescent Current, Fast Transient Low Dropout Linear Regulator

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The AP7335A-50 is a 300mA, 5.0V fixed output voltage, low-dropout linear regulator with ±1% output voltage accuracy. The device includes pass element, error amplifier, band-gap, current limit and thermal shutdown circuitry. The device is turned on when EN pin is set to logic high level.

The characteristics of low-dropout voltage and low-quiescent current make it suitable for low-power applications, for example, battery powered devices. The typical quiescent current is 35μA. Built-in, current-limit and thermal-shutdown functions prevent IC from damage in fault conditions.

This device is only available as a 5.0V fixed version. Please contact your local sales office for any other voltage options.

The AP7335A-50 is packaged in SOT25 and U-DFN2020-6.


  • Smartphones
  • MP3/MP4s
  • Battery-Powered Devices
  • Bluetooth Headsets
  • Battery Chargers
  • TVs
  • Multifunction Monitors


  • 300mA Low Dropout Regulator with EN
  • Very Low IQ 35µA
  • Fixed Output at 5.0V
    • VIN(MIN) 5.5V
  • High PSRR: 65dB at 1kHz
  • Fast Start-up Time 220µs
  • Stable with Low ESR, 1µF Ceramic Output Capacitor
  • Excellent Load/Line Transient Response
  • Low Dropout 150mV at 300mA
  • Current Limit and Short Circuit Protection
  • Thermal Shutdown Protection
  • Ambient Temperature Range -40ºC to +85°C
  • SOT25, and U-DFN2020-6 Available in “Green” Molding Compound (No Br, Sb)

Product Specifications

Product Parameters

Compliance (Only Automotive supports PPAP) Standard
Output options Fixed
Iout (A) 0.3
Vin (Max) (V) 6
Vin (Min) (V) 5.5
Vout (min) 5
Vout (max) 5
Fixed Vout (V) 5
Iq (typ) (µA) 35
Accuracy 25C 1%
VDROPOUT (Max) (V) at Max Current and Max Ouput Voltage 0.2
PSRR (dB) 1kHz 65
Operating Temperature (Ambient) (°C) -40 to 85 (°C)
Enable Active H
Channels 1
Output Discharge no
Iq (max)(µA) 80
VCTL function no

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