TPS61222-EP_15 Datasheet, PDF (1/20 Pages) Texas Instruments – LOW INPUT VOLTAGE, 0.7-V BOOST CONVERTER WITH 5.5-μA QUIESCENT CURRENT

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TPS61222-EP
SLVSBI2 – SEPTEMBER 2012
LOW INPUT VOLTAGE, 0.7-V BOOST CONVERTER WITH 5.5-μA QUIESCENT CURRENT
Check for Samples: TPS61222-EP
FEATURES
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• 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
• Fixed Output Voltage Versions
• Small 6-Pin SC-70 Package
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
SUPPORTS DEFENSE, AEROSPACE,
AND MEDICAL APPLICATIONS
• Controlled Baseline
• One Assembly and Test Site
• One Fabrication Site
• Available in Military (–55°C to 125°C)
Temperature Range ⁽¹⁾
• Extended Product Life Cycle
• Extended Product-Change Notification
• 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.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2012, Texas Instruments Incorporated