FEATURES:
• EMI Reduction with Switching Node Ringing-free
• 410kHz Switching Frequency with 6% Frequency Spread Spectrum (FSS)
• Forced PWM mode with 230uA Quiescent Current in Light Load Condition
• 4.6V-28V Wide Input Voltage Range
• Up to 3A Continuous Output Load Current
• 0.605V Feedback Reference Voltage
• Fully Integrated 110mΩ Rdson High Side MOSFET and 60mΩ Rdson Low Side MOSFET
• 1.5uA Shut-down Current
• Low Drop-out Function
• Precision Enable Threshold for Programmable UVLO Threshold and Hysteresis
• 3ms Built-in Soft Start Time
• Output Over Voltage and Over Current Protection
• Thermal Shutdown Protection at 160°C
• Available in FCSOT23-6L Package
DESCRIPTION:
The SCT2331D is 3A synchronous buck converters with up to 28V wide input voltage range, which fully integrates an 110mΩ high-side MOSFET and a 60mΩ low-side MOSFET to provide high efficiency step-down DC-DC conversion. The SCT2331D adopts peak current mode control with the integrated compensation network, which makes SCT2331D easily to be used by minimizing the off-chip component count. The SCT2331D supports the Forced PWM mode (FPWM) with typical 230uA Quiescent Current. The SCT2331D is an Electromagnetic Interference (EMI) friendly buck converter with implementing optimized design for EMI reduction. The SCT2331D features Frequency Spread Spectrum FSS with ±6% jittering span of the 410kHz switching frequency and modulation rate 1/512 of switching frequency to reduce the conducted EMI. The converter has proprietary
designed gate driver scheme to resist switching node ringing without sacrificing MOSFET turn-on and turn-off time, which further erases high frequency radiation EMI noise caused by the MOSFETs hard switching. The SCT2331D offers output over-voltage protection, cycle-by-cycle peak current limit, hiccup protection, and thermal shutdown protection. The device is available in a low-profile FCSOT23-6L package.
APPLICATIONS:
• White Goods, Home Appliance
• Surveillance
• Audio, WiFi Speaker
• Printer, Charging Station
• DTV, STB, Monitor/LCD Display