TPS61222-EP

www.ti.com

SLVSBI2 – SEPTEMBER 2012

LOW INPUT VOLTAGE, 0.7-V BOOST CONVERTER WITH 5.5-

μA QUIESCENT CURRENT

Check for Samples: TPS61222-EP

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FEATURES

•

Up to 95% Efficiency at Typical Operating

APPLICATIONS

Conditions

•

Battery Powered Applications

•

5.5

μA Quiescent Current

–

1 to 3 Cell Alkaline, NiCd or NiMH

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Startup Into Load at 0.7 V Input Voltage

–

1 Cell Li-Ion or Li-Primary

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Operating Input Voltage from 0.7 V to 5.5 V

•

Solar or Fuel Cell Powered Applications

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Pass-Through Function During Shutdown

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Consumer and Portable Medical Products

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Minimum Switching Current 200 mA

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Personal Care Products

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Protections:

•

White or Status LEDs

–

Output Overvoltage

•

Smartphones

–

Overtemperature

SUPPORTS DEFENSE, AEROSPACE,

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Input Undervoltage Lockout

AND MEDICAL APPLICATIONS

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Fixed Output Voltage Versions

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Controlled Baseline

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Small 6-Pin SC-70 Package

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One Assembly and Test Site

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One Fabrication Site

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Available in Military (–55°C to 125°C)

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Extended Product Life Cycle

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Extended Product-Change Notification

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Product Traceability

(1)

Custom temperature ranges available

DESCRIPTION

The TPS61222 provides a power-supply solution for products powered by either a single-cell, 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 offered in a 6-pin SC-70 package (DCK) measuring 2 mm x 2 mm to enable small circuit layout size.

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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Copyright © 2012, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.