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Texas Instruments TPS62745/627451 Ultra-Low Iq Step-Down Converters

Texas Instruments TPS62745/627451 Ultra-Low Iq Step-Down Converters are a high efficiency ultra-low power synchronous step down converters. These are optimized for low power wireless applications. They provide a regulated output voltage consuming only 400nA quiescent current. Each device operates from two rechargeable Li-Ion batteries (Li-SOCl2, Li-SO2, Li-MnO2) or four to six cell alkaline batteries. The input voltage range up to 10V allows also operation from a USB port and thin-film solar modules. The output voltage is set with four VSEL pins between 1.8V and 3.3V for TPS62745 or 1.3V and 2.8V for TPS627451.

Features

  • Input Voltage Range VIN from 3.3V to 10V
  • Typical 400nA Quiescent Current
  • Up to 90% efficiency with load currents > 15µA
  • Up to 300mA Output Current
  • RF Friendly DCS-Control™
  • Low Output Ripple Voltage
  • 16 Selectable Output Voltages from 1.8V to 3.3V (TPS62745)
  • 1.3V to 2.8V (TPS627451)
  • Integrated input voltage switch
  • Integrated Discharge Function at VOUT
  • Open Drain Power Good Output
  • Operates with a Tiny 3.3µH or 4.7µH Inductor
  • Small 3mm×2mm WSON Package

Applications

  • Bluetooth® Low Energy, RF4CE, Zigbee
  • Industrial Metering
  • Energy Harvesting
Published: 2015-08-25 | Updated: 2022-03-11