SCT9323.pdf? EMI Reduction with Switching Node Ringing-free
? 3.8V-32V Wide Input Voltage Range
? Up to 2A Continuous Output Load Current
? 3.3V ±1% Output Voltage
? Fully Integrated 130mΩ Rdson High-side MOSFET and
70mΩ Rdson Low-side MOSFET
? 1uA Shut-down Current
? 20uA Ultra Low Quiescent Current
? 500KHz Switching Frequency with ±6% Frequency
Spread Spectrum FSS Modulation
? 80ns Minimum On-time
? Precision Enable Threshold for Programmable UVLO
Threshold and Hysteresis
? Low Drop-Out LDO Operation
? Pulse Skipping Modulation PSM in Light Load
? 4ms Built-in Soft-start Time
? Fixed 3.3-V Output
? 4.5-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
? Over 80% Efficiency at 10-mA Loading
? 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)
? Peak Current-Mode Control
? Cycle-by-Cycle Over Current Protection
? Frequency Spread Spectrum and Switching Node
Anti-Ringing to Ease EMI Issue
? External Soft Start
? Available in SOIC8 Package
