3.8V-36V Vin, 3A Synchronous Step-down DCDC Converter with EMI Reduction, SCT9431Q Replace AP63357.
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 74m? Rdson High Side MOSFET
and 40m? 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
優勢替代
FEATURES
? 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
o AP63356
? Supports Pulse Frequency Modulation (PFM)
o AP63357
o 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 5M? Internal Pull-up
? Precision Enable Threshold to Adjust UVLO
? Protection Circuitry
o Undervoltage Lockout (UVLO)
o Output Undervoltage Protection (UVP)
o Cycle-by-Cycle Peak Current Limit
o Thermal Shutdown
PIN CONFIGUTION
