TPS62151

3-17V 1A降压型转换器采用3x3 QFN封装 3-17V 1A Step-Down Converter in 3x3 QFN Package

The TPS6215x family is an easy-to-use synchronous step down dc-dc converter optimized for applications with high power density. A high switching frequency of typically 2.5 MHz allows the use of small inductors and provides fast transient response as well as high output-voltage accuracy by the use of DCS-Control topology.

With their wide operating input-voltage range of 3 V to 17 V, the devices are ideally suited for systems powered from either Li-Ion or other batteries as well as from 12-V intermediate power rails. The devices support up to 1-A continuous output current at output voltages between 0.9 V and 6 V in 100% duty-cycle mode. The soft-start pin controls the output-voltage start-up ramp, which allows operation as either a standalone power supply or in tracking configurations. Power sequencing is also possible by configuring the enable EN and open-drain power-good PG pins.

In power-save mode, the devices draw quiescent current of about 17 µA from VIN. Power-save-mode, entered automatically and seamlessly if the load is small, maintains high efficiency over the entire load range. In shutdown mode, the device turns off and current consumption is less than 2 µA.

The device, available in adjustable- and fixed-output-voltage versions, comes in a 16-pin VQFN package measuring 3 × 3 mm RGT.

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DCS-Control™ Topology

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Input Voltage Range: 3 V to 17 V

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Up to 1-A Output Current

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Adjustable Output Voltage From 0.9 V to 6 V

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Pin-Selectable Output Voltage nominal, + 5%

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Programmable Soft Start and Tracking

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Seamless Power-Save Mode Transition

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Quiescent Current of 17 µA typ.

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Selectable Operating Frequency

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Power-Good Output

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100% Duty-Cycle Mode

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Short-Circuit Protection

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Overtemperature Protection

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Pin to Pin Compatible with TPS62130 and TPS62140

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Available in a 3-mm × 3-mm, VQFN-16 Package