SCT9330STER

The SCT9330 is 3A synchronous buck converters with up to 28V wide input voltage range, which fully integrates an 85mΩ high-side MOSFET and a 48mΩ low-side MOSFET to provide high efficiency step-down DCDC conversion. The SCT9330 adopts peak current mode control with the integrated compensation network, which makes SCT9330 easily to be used by minimizing the off-chip component count. The SCT9330 supports the Pulse Skipping Modulation (PSM) with typical 20uA Ultra-Low Quiescent. The SCT9330 is an Electromagnetic Interference (EMI) friendly buck converter with implementing optimized design for EMI reduction. The SCT9330 features Frequency Spread Spectrum FSS with ±6% jittering span of the 400kHz 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 SCT9330 offers output over-voltage protection, cycle-by-cycle peak current limit, and thermal shutdown protection. The device is available ESOP-8 package.

Applications

• White Goods, Home Appliance
• Surveillance
• Audio, WiFi Speaker
• Printer, Charging Station
• DTV, STB, Monitor/LCD Display

Key features

• EMI Reduction with Switching Node Ringing-free
• 400kHz Switching Frequency with 6% Frequency Spread Spectrum FSS
• Pulse Skipping Mode PSM with 20uA 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 85mΩ Rdson High Side MOSFET and 48mΩ Rdson Low Side MOSFET
• 1uA Shut-down Current
• 80ns Minimum On-time
• Precision Enable Threshold for Programmable UVLO Threshold and Hysteresis
• Low Dropout Mode Operation
• 4ms Built-in Soft Start Time
• Output Over Voltage Protection
• Thermal Shutdown Protection at 160°C
• Available in ESOP-8 Package