TPS63061DSCR

具有2A开关电流高输入电压降压 - 升压型转换器 HIGH INPUT VOLTAGE BUCK-BOOST CONVERTER WITH 2A SWITCH CURRENT

The is a 93% Efficient 2.25A Switch Current Limit Buck-boost Converter with 1A switches that 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. 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 2.25A. The output voltage is programmable using an external resistor divider or is fixed internally on the chip. The converter can be disabled to minimize battery drain. During shutdown, the load is disconnected from the battery.

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Efficiency up to 93%

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2A Output current at 5V in buck mode VIN <10V

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1.3A Output current at 5V in boost mode VIN >4V

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Automatic transition between step down and boost mode

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<30µA Typical device quiescent current

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Fixed and adjustable output voltage options from 2.5 to 8V

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Power save mode for improved efficiency at low output power

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Forced fixed frequency operation at 2.4MHz and synchronization possible

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Power good output

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Buck-boost overlap control

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Load disconnect during shutdown

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Over-temperature protection

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Overvoltage protection

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Green product and no Sb/Br

This device has limited built-in ESD protection, leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.