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The AP63356Q/AP63357Q is an automotive-compliant, 3.5A, synchronous buck converter with a wide input voltage range of 3.8V to 32V. The device fully integrates a 74mΩ high-side power MOSFET and a 40mΩ low-side power MOSFET to provide high-efficiency stepdown DC-DC conversion. The AP63356Q/AP63357Q 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 AP63356Q/AP63357Q 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. AP63356Q/AP63357Q 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 3mm × 2mm, V-DFN3020-13/SWP (Type A1), package with wettable flanks.


  • 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: 3.8V to 32V
  • 3.5A Continuous Output Current
  • 0.8V ±1% Reference Voltage
  • 22µA Low Quiescent Current (Pulse Frequency Modulation)
  • Lead-Free Finish; Fully RoHS Compliant 
  • Halogen and Antimony Free. “Green” Device 
  • The AP63356Q and AP63357Q are suitable for automotive
    applications requiring specific change control; these parts
    are AEC-Q100 qualified, PPAP capable, and manufactured in
    IATF 16949 certified facilities.


  • 12V Automotive Power Systems
  • Automotive Infotainment
  • Automotive Instrument Clusters
  • Automotive Body Electronics and Lighting
  • Automotive Telematics
  • Advanced Driver Assistance Systems

Product Specifications

Product Parameters

Type Buck
Efficiency (%) 95 %
HS RDS(ON) (mΩ) 74 mΩ
LS RDS(ON) (mΩ) 40 mΩ
Frequency Typ (Hz) 450 kHz
MinimumInput Voltage (V) 3.8 V
MaximumInput Voltage (V) 32 V
Output Current (mA) 3.5 A
Output Voltage (V) 0.8 to VIN V
Quiescent Current Typ (μA) 0.022 mA
Shutdown Current Typ (µA) 0.6 µA

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Orderable Part Number Buy from Distributor / Contact Sales Request Samples


Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Digi-Key Electronics 31725 12/6/2021 Europe, Asia, North America Buy Now
RS Components - UK 10 11/24/2021 England Buy Now
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