TPS61221DCKR Integrated Circuits (ICs)

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1. Describe

TPS61221DCKR series devices provide power solutions for single battery powered products, Two batteries, or three alkaline, NiCd or NiMH batteries, or one Battery Lithium-ion or Lithium-polymer battery. possible output The current depends on the ratio of the input to output voltage. Hysteresis Based Boost Converter Controller Topology Using Synchronous Rectification Maximum efficiency, minimum static current. Adjustable version with output voltage can be programmed via an external resistor divider, or Internally set to a fixed output voltage. this The converter can be turned off by the function enable pin. When off, battery consumption is minimize. The device uses a 6-pin SC-70 For small circuit layout sizes, the package (DCK) size is 2 mm x 2 mm.

2. Feature

    1. Up to 95% efficiency under typical operating conditions

    2. 5.5 μA quiescent current

    3. Start the load at 0.7 V input voltage

    4. Operating input voltage range from 0.7 V to 5.5 V

    5. Pass-through function when powered off

    6. Minimum switching current 200 mA

    7. Protect:

        – Output overvoltage

        – over temperature

        – Input undervoltage lockout

    8. Adjustable output voltage from 1.8 V to 6 V

    9. Fixed output voltage version

  10. Small 6-pin SC-70 package

3. Application

    1. Battery powered applications

        – 1 to 3 alkaline batteries, NiCd or NiMH

        – 1 cell Li-ion or Li-ion battery

    2. Solar or fuel cell powered applications

    3. Consumer and portable medical products

    4. Personal care products

    5. White or status LED

    6. cell phone

4. Pin configuration

5. Pin Description