The TPS53310 provides a fully integrated 3-V to 5-V VIN integrated synchronous FET converter solution with 16 total components, in 200 mm2 of PCB area. Due to the low RDS(on) and TI's proprietary SmoothPWM&153; Skip mode of operation, it enables 95.5% peak efficiency, and over 90% efficiency at loads as light as 100 mA. It requires only two 22-µF ceramic output capacitors for a power dense 3-A solution.

The TPS53310 features a 1.1-MHz switching frequency, SKIP mode operation support, pre-bias startup, internal softstart, output soft discharge, internal VBST switch, power good, EN/input UVLO, overcurrent, overvoltage, undervoltage and over-temperature protections and all ceramic output capacitor support. It supports supply voltage from 2.9V to 3.5V and conversion voltage from 2.9V to 6.0V, and output voltage is adjustable from 0.6V to 0.84V × VIN.

The TPS53310 is available in the 3 mm × 3 mm 16-pin QFN package (Green RoHs compliant and Pb free) and operates between –40°C and 85°C.

• >95% Maximum Efficiency
• Continuous 3-A Output Current
• Hiccup Overcurrent Protection
• Supports All MLCC Output Capacitor
• SmoothPWM Auto-Skip Eco-mode for Light-Load Efficiency
• Voltage Mode Control
• Supports Master-Slave Interleaved Operation
• Synchronization up to ±20% of Nominal Frequency
• Conversion Voltage Range Between 2.9 V and 6.0 V
• Soft-Stop Output Discharge During Disable
• Adjustable Output Voltage Ranging Between 0.6 V and 0.84 V × VIN
• Undervoltage, Overvoltage and Over-Temperature Protection
• Small 3 × 3 , 16-Pin QFN Package
• Open-Drain Power Good Indication
• Internal Boot Strap Switch
• Low RDS(on), 24 m with 3.3-V Input and 19-m with 5-V Input
• Supports Pre-bias Start Up
• APPLICATIONS
  • 5-V Step-down Rail
  • 3.3-V Step-down Rail