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).