TPS63000-Q1

采用 3x3 QFN 封装，具有 1.8A 电流开关的汽车类 96% 升压降压转换器

The TPS63000 devices provide a power supply solution for products powered by either a two-cell or three-cell alkaline, NiCd or NiMH battery, or a one-cell Li-Ion or Li-polymer battery. Output currents can go as high as 1200 mA while using a single-cell Li-Ion or Li-Polymer battery, and discharge it down to 2.5 V or lower. The buck-boost converter is based on a fixed frequency, pulse-width-modulation PWM controller using synchronous rectification to obtain maximum efficiency. At low load currents, the converter enters Power Save mode to maintain high efficiency over a wide load current range. The Power Save mode can be disabled, forcing the converter to operate at a fixed switching frequency. The maximum average current in the switches is limited to a typical value of 1800 mA. The output voltage is programmable using an external resistor divider. The converter can be disabled to minimize battery drain. During shutdown, the load is disconnected from the battery. The device is packaged in a 10-pin QFN PowerPAD package measuring 3 mm × 3 mm DRC.

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Qualified for Automotive Applications

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Up to 96% Efficiency

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1200-mA Output Current at 3.3 V in Step Down

Mode VIN = 3.6 V to 5.5 V

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Up to 800-mA Output Current at 3.3 V in Boost

Mode VIN > 2.4 V

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Automatic Transition between Step Down and Boost Mode

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Device Quiescent Current Less Than 50 µA

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Input Voltage Range: 1.8 V to 5.5 V

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Adjustable Output Voltage From 1.2 V to 5.5 V

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Power Save Mode for Improved Efficiency at

Low Output Power

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Forced Fixed Frequency Operation and

Synchronization Possible

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Load Disconnect During Shutdown

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Over-Temperature Protection

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Available in Small 3 mm × 3 mm, QFN-10 Package

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APPLICA ONS

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All Two-Cell and Three-Cell Alkaline,

NiCd or NiMH or Single-Cell Li Battery

Powered Products

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Portable Audio Players

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PDAs

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Cellular Phones

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Personal Medical Products

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White LEDs

PowerPAD Is a trademark of Texas Instruments.

All other trademarks are the property of their respective owners.