1 Features

• Up to 95% Efficiency at Typical Operating

Conditions

• 5.5μA Quiescent Current

• Startup Into Load at 0.7-V Input Voltage

• Operating Input Voltage from 0.7V to 5.5V

• Pass-Through Function during Shutdown

• Minimum Switching Current 200mA

• Protections:

– Output Overvoltage

– Overtemperature

– Input Undervoltage Lockout

• Adjustable Output Voltage from 1.8V to 5.5V

• 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 Products

• Personal Care Products

• White or Status LEDs

• Smartphones

3 Description

The TLV61220A device provides a power-supply

solution for products powered by either a singlecell,

two-cell, or three-cell alkaline, NiCd or NiMH,

or one-cell 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 obtain maximum efficiency at minimal quiescent

currents. The output voltage of the adjustable version

can be programmed by an external resistor divider,

or is set internally to a fixed output voltage. The

converter can be switched off by a featured enable

pin. While being switched off, battery drain is

minimized. The device is packaged in a 6-pin thin

SOT-23 package (DBV).