Diodes Incorporated
SOT26

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AP62250

4.2V TO 18V INPUT, 2.5A HIGH FREQUENCY SYNCHRONOUS BUCK CONVERTER

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Description

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.

Feature(s)

  • 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/

Application(s)

  • 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

Product Specifications

Product Parameters

Compliance(Only Automotive supports PPAP) Standard
Type Buck
Minimum Input Voltage (V) 4.2
Maximum Input Voltage (V) 18
Output Current (A) 2.5
Minimum Output Voltage (V) 0.8
Maximum Output Voltage (V) 7
Quiescent Current Typ (µA) 155
Shutdown Current Typ (µA) 1.5
Frequency Typ (kHz) 1300
HS RDS(ON) (mΩ) 75
LS RDS(ON) (mΩ) 45
Features Enable,Light Load Efficiency,Soft-start Fixed,UVLO Adjustable,Overcurrent Protection,Thermal Shutdown,Synchronous Rectification

Technical Documents

Calculators

Evaluation Boards and User Guides

Recommended Soldering Techniques

TN1.pdf

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-2605 2023-03-09 2023-06-09 Qualified Additional Cu Pillar Bump Site and Bill of Materials (BOM) Lead Frame Material
PCN-2520 2021-05-27 2021-08-27 Qualified Additional Bump Site and Assembly/Test (A/T) Sites
PCN-2501 2021-01-13 2021-04-13 Qualified Additional A/T Sites