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The AP62250 is a 2.5A, synchronous buck converter with a wide input voltage range of 4.2V to 18V. The device fully integrates a 75mΩ highside power MOSFET and a 45mΩ low-side power MOSFET to provide high-efficiency step-down DC-DC conversion.

The AP62250 device is easily used by minimizing the external component count due to its adoption of Constant On-Time (COT) control to achieve fast transient response, easy loop stabilization, and low output voltage ripple.

The AP62250 design is optimized for Electromagnetic Interference (EMI) reduction. The device has a proprietary gate driver scheme to resist switching node ringing without sacrificing MOSFET turn-on and turn-off times, which reduces high-frequency radiated EMI noise caused by MOSFET switching.

AP62250 is available in SOT563 and TSOT26 packages.


  • 5V and 12V Distributed Power Bus Supplies
  • Flat Screen TV Sets and Monitors
  • White Goods and Small Home Appliances
  • FPGA, DSP, and ASIC Supplies
  • Home Audio
  • Network Systems
  • Gaming Consoles
  • Consumer Electronics
  • General Purpose Point of Load


  • VIN: 4.2V to 18V
  • Output Voltage (VOUT): 0.8V to 7V
  • 2.5A Continuous Output Current
  • 0.8V ± 1% Reference Voltage (TA = +25°C)
  • 155μA Low Quiescent Current (Pulse Frequency Modulation)
  • 1.3MHz Switching Frequency (VIN = 12V, VOUT = 5V)
  • Proprietary Gate Driver Design for Best EMI Reduction
  • Protection Circuitry
  • Undervoltage Lockout (UVLO)
  • Cycle-by-Cycle Valley Current Limit
  • Thermal Shutdown
  • Totally Lead-Free & Fully 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-Q100/101/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/

Product Specifications

Product Parameters

Type Buck
Efficiency 95 %
HS RDS(ON) 63 mΩ
LS RDS(ON) 36 mΩ
Frequency Typ 1300 kHz
Minimum Input Voltage 4.2 V
Maximum Input Voltage 18 V
Output Current 2.5 A
Output Voltage 0.8 to 7 V
Quiescent Current Typ 0.156 mA
Shutdown Current Typ 1.4 µA

Technical Documents

Recommended Soldering Techniques



Orderable Part Number Authorized Distributor Quantity Inventory Date Buy Online Countries/Regions
AP62250WU-7 Digi-Key Electronics 2935 10/23/2020 Buy Now Europe, Asia, North America
AP62250WU-EVM Mouser Electronics Inc. 5 10/24/2020 Buy Now South America, North America, Asia, Europe, Middle East
AP62250WU-EVM Digi-Key Electronics 5 10/23/2020 Buy Now Europe, Asia, North America
AP62250Z6-7 Digi-Key Electronics 2800 10/23/2020 Buy Now Europe, Asia, North America