TPS61252中文资料电流精度为 ±20%、具备可调节输入电流限制的 3.5MHz、1.5A、效率为 92% 的升压转换器数据手册TI规格书

描述 Description

The TPS61252 device provides a power supply solution for products powered by either a three-cell alkaline, NiCd or NiMH battery, or an one-cell Li-Ion or Li-polymer battery. The wide input voltage range is ideal to power portable applications like mobile phones or computer peripherals. The device has a resistor programmable (RILIM) input current limit and is suitable for a wide variety of applications.

During light loads, the device automatically enters skip mode (PFM), which allows the converter to maintain the required output voltage, while only drawing 30 µA quiescent current from the battery. Thisallows maximum efficiency at lowest quiescent currents.

TPS61252 allows the use of small inductors and capacitors to achieve a small solution size. The possibility to reduce the current limit by a external resistor offers the potential use of physically even smaller inductors with lower rated currents to further reduce total solution sizes of the power supply. During shutdown, the load is completely disconnected from the battery. The TPS61252 is available in a 8-pin WSON package measuring 2 mm × 2 mm (DSG).

特性 Features

• Resistor Programmable Input Current Limit
• Programmable from 100 mA up to 1500 mA
• Up to 92% Efficiency
• Power Good Indicates Appropriate Output Voltage Level
• 100% Duty-Cycle Mode When VIN > VOUT
• Short Circuit Protection
• Available in a 2-mm × 2-mm WSON-8 Package
• USB Host Supplies from a Single Li-Ion Battery
• Li-Ion Applications
• RF-PA Buffer

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