TLV61225 Single-Cell High-Efficient Step-Up Converter in 6-Pin SC-70 Package

1 Features

• Up to 94% Efficiency at Typical Operating Conditions
• 5-μA Quiescent Current
• Operating Input Voltage from 0.7 V to 3.3 V
• Pass-Through Function During Shutdown
• Output Current of More Than 40-mA From a 1.2-V Input
• Typical Switch Current Rating 400 mA
• Output Overvoltage Protection
• Overtemperature Protection
• Fixed 3.3-V Output Voltage
• Small 6-Pin SC-70 Package

2 Applications

• Battery-Powered Applications
  • 1- to 2- Cell NiMH or Alkaline
  • 1-Cell Li-Primary
• Consumer and Portable Medical Products
• Personal Care Products

3 Description

The TLV61225 device provides a power-supply solution for products powered by either a single-cell or 2-cell alkaline or NiMH, or 1-cell Li-primary 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 this device is set internally to a fixed output voltage of 3.3 V. The converter can be switched off by a featured enable pin. While being switched off, battery drain is minimized. The device is offered in a 6-pin SC-70 package (DCK) measuring 2 mm × 2 mm to enable small circuit layout size.

1. For all available packages, see the orderable addendum at the end of the data sheet.

Typical Application Schematic

4 Revision History

Changes from * Revision (August 2010) to A Revision

• Added Pin Configuration and Functions section, ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section Go

5 Pin Configuration and Functions

DCK Package

6-Pin SOT

(Top View)