3.8V-36V Vin, 3A Synchronous Step-down DCDC Converter with EMI Reduction, SCT9431Q Replace AP63357Q.
SCT9431Q
SCT9431Q.pdf
SCT9431Q.pdfFEATURES
• 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
FEATURES
• 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)
• 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
