TPS53313 provides a 5-V or 12-V synchronous buck converter that integrates two N-Channel MOSFETs. Due to low RDS(on) and TI proprietary SmoothPWM skip mode of operation, it optimizes the efficiency at light-load condition without compromising the output voltage ripple.

The TPS53313 features programmable (from 250 kHz to 1.5 MHz) switching frequency with selectable skip mode or forced CCM mode operation. The device provides pre-biased startup, soft-stop, integrated bootstrap switch, power good function, EN/input UVLO protection. It supports input voltages from 4.5 V to 16 V and no extra bias voltage is needed. The output voltage is adjustable from 0.6 V up to 0.7 × VIN.

The TPS53313 is available in a 4mm × 4mm, 24-pin, QFN package (Green RoHs compliant and Pb free) and operates between -40°C and 85°C.

• 4.5-V to 16-V Conversion Voltage Range
• Adjustable Output Voltage Ranging from 0.6 V to 0.7×VIN
• Continuous 6-A Output Current
• Supports All MLCC Output Capacitors
• Selectable SKIP Mode or Forced CCM
• Selectable Soft-Start Time (1 ms, 3 ms, or 6 ms)
• Selectable 4-5 A, 6-A or 9-A Peak Current Limit
• Optimized Efficiency at Light and Heavy Loads
• Voltage Mode Control
• Programmable Switching Frequency from 250kHz to 1.5 MHz
• Synchronizes to External Clock
• RDS(on) Sensing for Zero Crossing Detection and Overcurrent Protection
• Soft-Stop Output Discharge During Disable
• Overcurrent, Overvoltage and Undervoltage Protection with Hiccup
• Over-Temperature Protection
• Open-Drain, Power Good Indication
• Internal Bootstrap Switch
• 4 mm × 4 mm, 24-Pin, QFN Package