TLV61220 - Texas Instruments

TLV61220 Low-Input Voltage Step-Up Converter

The TLV61220 device provides a power-supply solution for products powered by either a single-cell, two-cell, or three-cell alkaline, NiCd or NiMH, or onecell Li-Ion or Li-polymer battery. Possible output currents depend on the input-to-output voltage ratio. The boost converter is based on a hysteretic controller topology using synchronous rectification to ob.

Features

•1 Up to 95% Efficiency at Typical Operating Conditions
• 5.5-μA Quiescent Current
• Startup Into Load at 0.7-V Input Voltage
• Operating Input Voltage from 0.7 V to 5.5 V
• Pass-Through Function during Shutdown
• Minimum Switching Current 200 mA
• Protections:
  – Output Overvoltage
  – Overtemperature
  – Input Undervoltage Lockout
• Adjustable Output Voltage from 1.8 V to 5.5 V
• Small 6-pin Thin SOT-23 Package 2 Applications
• Battery Powered Applications
  – 1 to 3 Cell Alkaline, NiCd or NiMH
  – 1 Cell Li-Ion or Li-Primary
• Solar or Fuel Cell Powered Applications
• Consumer and Portable Medical P.