SCT9336STER

The SCT9336 is 5A synchronous buck converters with up to 28V wide input voltage range, which fully integrates an 85mΩ high- side MOSFET and a 58mΩ low- side MOSFET to provide high efficiency step- down DCDC conversion. The SCT9336 adopts peak current mode control with the integrated compensation network, which makes SCT9336 easily to be used by minimizing the off- chip component count. The SCT9336 supports the Pulse Skipping Modulation (PSM) with typical 20uA Ultra- Low Quiescent. The SCT9336 is an Electromagnetic Interference (EMI) friendly buck converter with implementing optimized design for EMI reduction. The SCT9336 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 SCT9336 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
• 0.8V ± 1% Feedback Reference Voltage
• Fully Integrated 85mΩ Rdson High Side MOSFET and 58mΩ 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℃
• Available in ESOP- 8 Package