text.skipToContent text.skipToNavigation


4.5-V to 28-V input, 6-A synchronous buck converter with ULQ-mode


Package | PIN: VQFN-HR (RPA) | 10
Temp: Q (-40 to 125)
Carrier: Cut Tape
Qty Price
1-9 $3.66
10-24 $3.29
25-99 $3.07
100-249 $2.69
250-499 $2.52
500-749 $2.14
750-999 $1.81
1000+ $1.73


  • 4.5-V to 28-V Wide Input Voltage Range
  • 0.6-V to 16-V Wide Output Voltage Range
  • 6-A Maximum Continuous Output Current
  • 500-kHz Switching Frequency
  • Integrated 26-mΩ and 12-mΩ MOSFETs
  • Supports POSCAP and All MLCC Output Capacitors
  • D-CAP3™ Control Mode for Fast Transient Response
  • Selectable Forced Continuous Conduction Mode (FCCM) for Tight Output Ripple or Auto-Skipping Eco-mode™ for Light-Load Efficiency
  • 0.6-V ±1% Reference Voltage
  • Internal 2-ms Soft Start
  • Built-In Output Discharge Function
  • Power Good Indicator to Monitor Output Voltage
  • Non-Latched Output OV, UV, OT Protection for Fault Protection
  • –40°C to +150°C Operating Junction Temperature
  • Small 10-Pin 3.0-mm × 3.0-mm HotRod™ QFN Package

All trademarks are the property of their respective owners.

Texas Instruments  XTPS56637RPAT

The TPS56637 is an adaptive on-time D-CAP3™ control mode synchronous step-down DC-DC converterthat can deliver 6-A continuous output current. The Eco-mode™ control scheme (pulse-skipping) optimizes thisswitch-mode power supply (SMPS) device for applications that require very-low power consumption,such as printers, DTVs, and monitors. The TPS56637 has 30-V capable MOSFETs for applicationsworking at 24-V bus power lines. The D-CAP3™control mode provides an easy-to-design, stable regulation with very little external components. Itsupports cost effective ceramic capacitors.

The TPS56637 has both FCCM and the Eco-mode™ control scheme for selection at light-load operationso that it can be used in a wider range of applications. The D-CAP3™ control mode can support an output up to 16 V.

The TPS56637 features cycle-by-cycle current limit, non-latched protection underovervoltage, undervoltage and overtemperature conditions.