3.8V-28V Vin, 3A Asynchronous Step-down DCDC Converter, SCT9331C Replace TPS5402.
SCT9331C
SCT9331C.pdf
SCT9331C.pdfFEATURES
• EMI Reduction with Switching Node Ringing-free
• 400kHz Switching Frequency with 6% Frequency
Spread Spectrum (FSS)
• Pulse Skipping Mode PSM with 25uA Quiescent
Current in Light Load Condition
• 3.8V-28V Wide Input Voltage Range
• Up to 3A Continuous Output Load Current
• 0.8V ±1% Feedback Reference Voltage
• Fully Integrated 115mΩ Rdson High Side MOSFET
• 1uA Shutdown Current
• 80ns Minimum On-time
• Precision Enable Threshold for Programmable
UVLO Threshold and Hysteresis
• 4ms Built-in Soft Start Time
• Output Over Voltage Protection
• Thermal Shutdown Protection at 160°C
• Available in SOP-8L Package
PIN CONFIGUTION
CROSS
FEATURES
• 3.5-V to 28-V Wide Input Voltage Range
• Up to 1.7-A Maximum Continuous Output
Loading Current
• Pulse Skipping Mode to Achieve High Light
Load Efficiency
• High Light Load Efficiency
• Frequency Spread Spectrum to Reduce EMI
• Adjustable 50-kHz to 1.1-MHz Switching
Frequency Set by an External Resistor
(Leave pin ROSC floating. Set frequency to
120 kHz and ground connection to 70 kHz)
• Frequency Spread Spectrum to Ease EMI Issue
• Peak Current-Mode Control
• Cycle-by-Cycle Over Current Protection
• External Soft Start
• Available in SOIC8 Package
PIN CONFIGUTION
