TPS62260

采用 2x2mm SON/TSOT23 封装的 2.25MHz 600mA 降压转换器

The TPS6226x device is a highly efficient synchronous step-down DC/DC converter. The TPS6226x provides up to 600-mA output current from a single Li-Ion cell, and is ideal for battery-powered applications such as mobile phones and other portable equipment.

With an wide input voltage range of 2 V to 6 V, the device also supports two- and three-cell alkaline batteries, 3.3-V and 5-V input voltage rails.

The TPS6226x operates at 2.25-MHz fixed-switching frequency, and enters power save mode operation at light load currents to maintain high efficiency over the entire load current range.

The power save mode is optimized for low-output voltage ripple. For low noise applications, the device can be forced into fixed frequency pulse-width modulation PWM mode by pulling the MODE pin high. In the shutdown mode, the current consumption is reduced to less than 1 µA. The TPS6226x allows the use of small inductors and capacitors to achieve a small solution size.

The TPS6226x operates over a free air temperature range of –40°C to 85°C. It is available in a 5-pin SOT and a 6-pin 2-mm × 2-mm WSON package.

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High Efficiency Step-Down Converter

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Output Current up to 600 mA

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VIN Range from 2 V to 6 V for Li-ion Batteries with

Extended Voltage Range

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2.25-MHz Fixed Frequency Operation

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Power Save Mode at Light Load Currents

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Output Voltage Accuracy in PWM Mode ±1.5%

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Typical 15-µA Quiescent Current

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100% Duty Cycle for Lowest Dropout

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Voltage Positioning at Light Loads

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Available in a SOT 5 and 2-mm × 2-mm × 0.8-

mm WSON 6 Package

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Allows <1-mm Solution Height

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APPLICA ONS

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Mobile Phones, Smart Phones

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Low Power DSP Supply

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Portable Media Players

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Point-of-Load POL Applications

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