TPS627451 - Texas Instruments

TPS627451 Dual-cell Ultra Low Step Down Converter

The TPS62745 is a high efficiency ultra low power synchronous step down converter optimized for low power wireless applications. It provides a regulated output voltage consuming only 400-nA quiescent current. The device operates from two rechargeable Li-Ion batteries, Li-primary battery chemistries such as Li-SOCl2, Li-SO2, Li-MnO2 or four to six cell alkali.

Features

•1 Input Voltage Range VIN from 3.3 V to 10 V
• Typical 400 nA Quiescent Current
• Up to 90% efficiency with load currents >15 µA
• Up to 300 mA Output Current
• RF Friendly DCS-Control™
• Low Output Ripple Voltage
• 16 Selectable Output Voltages from
  – 1.8 V to 3.3 V (TPS62745)
  – 1.3 V to 2.8 V (TPS627451)
• Integrated input voltage switch
• Integrated Discharge Function at VOUT
• Open Drain Power Good Output
• Operates with a Tiny 3.3 µH or 4.7 µH Inductor
• Small 3 mm x 2 mm WSON Package 2 Applications
• Bluetooth® Low Energy, RF4CE, Zigbee
• Industrial Metering
• Energy Harvesting 3 Descr.