Diodes Incorporated
X1 WLB1713 12

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Back to Boost Converter


0.6V to 5.5V Input Synchronous Boost Converter with 4.7A Switches

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The AP72250 is a synchronous boost converter with a minimum 1V input startup voltage and can operate in a wide input voltage range of 0.6V to 5.5V. The device fully integrates a 20mΩ high-side power MOSFET and a 26mΩ low-side power MOSFET to provide high-efficiency step-up DC-DC conversion.

The AP72250 device is easily used by minimizing the external component count due to its adoption of peak current mode control, allowing it to handle wide input-to-output ratios. It also achieves outstanding performance in line and load transient responses and seamless transitions between boost and pass-through modes.

The device is available in a small 1.75mm x 1.35mm, 12-ball WLCSP.


  • VIN: 0.6V to 5.5V
  • Minimum Input Startup Voltage: 1V
  • Output Voltage (VOUT): 1.7V to 5.5V
  • 7A Switching Current
  • 8V ± 1% Reference Voltage
  • 20μA Low Quiescent Current (Pulse Frequency Modulation)
  • 900kHz Switching Frequency
  • Up to 89% Efficiency at 5mA Light Load
  • Selectable Operation Mode
    • Pulse Frequency Modulation (PFM)
    • Ultrasonic Mode (USM)
    • Forced Pulse Width Modulation (FPWM)
  • Power-Good Indicator with 5MΩ Internal Pull-up Resistor
  • Protection Circuitry
  • Undervoltage Lockout (UVLO)
  • Peak Current Limit
  • Negative (Valley) Current Limit
  • Output Short Circuit Protection (SCP)
  • Thermal Shutdown
  • Totally Lead-Free & Fully RoHS Compliant
  • Halogen and Antimony Free. “Green” Device 
  • For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/


  • Low voltage power cells
  • Portable consumer devices
  • Supercapacitor charge storages
  • USB power supplies
  • Power banks
  • Industrial metering equipment

Product Specifications

Product Parameters

MinimumInput Voltage (V) 0.6 V
MaximumInput Voltage (V) 5.5 V
Minimum Output Voltage (V) 1.7 V
Maximum Output Voltage (V) 5.5 V
HS RDS(ON) (mΩ) 20 mΩ
LS RDS(ON) (mΩ) 26 mΩ
Quiescent Current Typ (mA) 0.02 mA
Shutdown Current Typ (µA) 2.5 µA
Output Current (mA) 2 A
Frequency Typ (Hz) 900K Hz
Efficiency (%) 97 %

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