Diodes Incorporated

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4.5V to 40V Input, 600mA Synchronous AEC-Q100 Buck with Enhanced EMI Reduction

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The AP64060Q is a 600mA, synchronous buck converter with a wide input voltage range of 4.5V to 40V. The device fully integrates a 600mΩ high-side power MOSFET and a 300mΩ low-side power MOSFET to provide high-efficiency step-down DC-DC conversion.

The AP64060Q device is easily used by minimizing the external component count due to its adoption of peak current mode control along with its integrated loop compensation network.

The AP64060Q 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. The AP64060Q also features Frequency Spread Spectrum (FSS) with a switching frequency jitter of ±6%, which reduces EMI by not allowing emitted energy to stay in any one frequency for a significant period of time.

The device is available in a TSOT26 package.



  • AEC-Q100 Qualified with the Following Results
  • Device Temperature Grade 1: -40°C to +125°C TA Range
  • Device HBM ESD Classification Level H2
  • Device CDM ESD Classification Level C5
  • VIN 4.5V to 40V
  • 600mA Continuous Output Current
  • Less than 0.1% Output Ripple at 12V
  • 90µA Low Quiescent Current (Pulse Frequency Modulation)
  • 2MHz Switching Frequency
  • Supports Pulse Frequency Modulation (PFM)
  • Proprietary Gate Driver Design for Best EMI Reduction
  • Precision Enable Threshold to Adjust UVLO
  • Protection Circuitry
    • Undervoltage Lockout (UVLO)
    • Output Overvoltage Protection (OVP)
    • Cycle-by-Cycle Peak Current Limit
    • Thermal Shutdown
  • Totally Lead-Free & Fully RoHS Compliant
  • Halogen and Antimony Free. “Green” Device
  • The AP64060Q is suitable for automotive applications requiring specific change control; this part is AEC-Q100 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities. https://www.diodes.com/quality/product-definitions/


  • 5V, 12V, and 24V Distributed Power Bus Supplies
  • eMeter
  • Automotive
  • White Goods and Small Home Appliances
  • FPGA, DSP, and ASIC Supplies
  • General Purpose Point of Load

Product Specifications

Product Parameters

Compliance(Only Automotive supports PPAP) Automotive
Type Buck
Minimum Input Voltage (V) 4.5
Maximum Input Voltage (V) 40
Output Current (A) 0.6
Quiescent Current Typ (µA) 90
Shutdown Current Typ (µA) 1
Frequency Typ (kHz) 2200
HS RDS(ON) (mΩ) 600
LS RDS(ON) (mΩ) 300

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