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TPS62172DSGR

TITPS62172DSGR

Texas Instruments
Buck Switching Regulator IC Positive Fixed 3.3V 1 Output 500mA 8-WFDFN Exposed Pad
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Overview

The TPS62172DSGR is a high-frequency synchronous step-down DC-DC converter optimized for applications with high power density requirements. It utilizes TI's DCS-Control technology to provide a fast transient response and high output voltage accuracy for a fixed 3.3V output. With an input voltage range of 3V to 17V, it is suitable for systems powered by multi-cell Li-Ion batteries or 12V intermediate power rails.

Why Choose This Part

The 2.25MHz switching frequency allows for the use of small inductors and capacitors, reducing the overall PCB footprint to fit within the 2mm x 2mm WSON package limits. It features a low quiescent current of 17uA and a Power Good output for simplified sequencing and system health monitoring.

Applications

Industrial Field Instrumentation
Regulating 12V or 15V industrial rails down to 3.3V for low-power microcontrollers and sensors.
Battery Powered Handhelds
Efficiently converting power from multi-cell battery packs with a seamless transition to power-save mode at light loads.
Point of Load Regulation
Providing local 3.3V regulation from a distributed 5V or 12V bus in space-constrained embedded systems.

Key Specifications

Function Step-Down
Topology Buck
Output Type Fixed
Mounting Type Surface Mount
Package / Case 8-WFDFN Exposed Pad
Current - Output 500mA
Number of Outputs 1
Output Configuration Positive
Frequency - Switching 2.25MHz
Operating Temperature -40degC ~ 85degC (TA)
Synchronous Rectifier Yes
Voltage - Input (Max) 17V
Voltage - Input (Min) 3V
Supplier Device Package 8-WSON (2x2)
Voltage - Output (Min/Fixed) 3.3V

Getting Started

Designers should follow the recommended layout in the datasheet to manage the 8-pin WSON thermal pad and minimize EMI from the high-frequency switching. TI offers the TPS62170EVM-627 evaluation module, which can be modified for the fixed-output versions, to validate transient performance and efficiency.

TPS62172 Family

Also available as: TPS62172DSGT

Also Consider

TPS62162DSGR TITexas Instruments - Provides a higher output current of 1000mA in a pin-to-pin compatible package if system power requirements increase.
AP63203WU-7 DIODiodes Incorporated - A 2A synchronous buck in a TSOT26 package that offers a fixed 3.3V output for higher current requirements with a wide input range.