3.8V-36V Vin, 3A Synchronous Step-down DCDC Converter with EMI Reduction, SCT9431Q Replace AP63356Q.
FEATURES

• Qualified for Automotive Applications

• AEC-Q100 Qualified with the Following Results:
  - Device Temperature Grade 1: -40°C to 125°C
    Ambient Operating Temperature Range
  - Device HBM ESD Classification Level H2
  - Device CDM ESD Classification Level C3B
• 3.8V-36V Wide Input Voltage Range
• Up to 3A Continuous Output Load Current
• EMI Reduction
  o Proprietary Gate Design for Switching Node
    Ringing-free
  o Frequency Spread Spectrum (FSS)
• Pulse Skipping Mode (PSM) with 22uA Quiescent
  Current in Light Load Condition
  o Up to 79% Efficiency at 1mA Light Load
  o Up to 89% Efficiency at 10mA Light Load
• 0.8V ±1.5% Feedback Reference Voltage
• Fully Integrated 74mΩ Rdson High Side MOSFET
  and 40mΩ Rdson Low Side MOSFET
• 1uA Shut-down Current
• 400kHz Switching Frequency
• Precision Enable Threshold for Programmable
  UVLO Threshold and Hysteresis
• Output Over Voltage Protection
• Thermal Shutdown Protection at 170°C
PIN CONFIGUTION
CROSS
AP63356Q AP63356Q.pdf

No.14459

FEATURES

• AEC-Q100 Qualified with the Following Results

  • Device Temperature Grade 1: -40°C to +125°C TRange
  • 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)
• 450kHz Switching Frequency
• Pulse Width Modulation (PWM) Regardless of Output Load
  AP63356Q
• Supports Pulse Frequency Modulation (PFM)
  AP63357Q
• Up to 86% Efficiency at 5mA Light Load
• Proprietary Gate Driver Design for Best EMI Reduction
• Frequency Spread Spectrum (FSS) to Reduce EMI
• Low-Dropout (LDO) Mode
• Power Good Indicator with 5MΩ Internal Pull-up
• Precision Enable Threshold to Adjust UVLO
• Protection Circuitry
• Undervoltage Lockout (UVLO)
• Output Undervoltage Protection (UVP)
• Cycle-by-Cycle Peak Current Limit

• Thermal Shutdown


PIN CONFIGUTION
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