SCT2321TVBR

A 2A synchronous buck converter with up to 32V wide input voltage range, which fully integrates a 130mΩ high-side MOSFET and a 70mΩ low-side MOSFET to provide high efficiency stepdown DCDC conversion. It adopts peak current mode control with the integrated compensation network, which makes it easily to be used by minimizing the off-chip component count. It supports Force Pulse Width Modulation (FPWM) Mode to achieve the small output ripple at light load condition. It is an Electromagnetic Interference (EMI) friendly buck converter with implementing optimized design for EMI reduction. The converter has proprietary designed gate driver scheme to resist switching node ringing without sacrificing MOSFET turn-on and turn-off time, which erases high frequency radiation EMI noise caused by the MOSFETs hard switching. It offers output over-voltage protection, cycle-by-cycle peak current limit, and thermal shutdown protection. The device is available in a low-profile TSOT23-6 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
• 500kHz Switching Frequency
• Force Pulse Width Modulation (FPWM) Mode
• 3.8V - 32V Wide Input Voltage Range
• Up to 2A Continuous Output Load Current
• 0.8V ±1% Feedback Reference Voltage
• Fully Integrated 130mΩ Rdson High Side MOSFET and 70mΩ 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 TSOT23-6L Package