TPS63030

1 -A开关系列高效率单电感器降压 - 升压型转换器 HIGH EFFICIENCY SINGLE INDUCTOR BUCK-BOOST CONVERTER WITH 1-A SWITCHES

The TPS6303x 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 600 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 1000 mA. 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.

The TPS6303x devices operate over a free air temperature range of –40°C to 85°C. The devices are packaged in a 10-pin VSON package measuring 2.5 mm × 2.5 mm DSK.

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Input Voltage Range: 1.8 V to 5.5 V

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Fixed and Adjustable Output Voltage Options from

1.2 V to 5.5 V

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Up to 96% Efficiency

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800-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 500-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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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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Overtemperature Protection

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Available in a Small 2.5-mm × 2.5-mm 10-Pin

VSON Package QFN