Parts Power Management Switching Regulators TPS54302DDCT

TITPS54302DDCT

Name: TPS54302DDCT
Brand: Texas Instruments

Texas Instruments

Buck Switching Regulator IC Positive Adjustable 0.596V 1 Output 3A SOT-23-6 Thin, TSOT-23-6

NRND6,648 in stock

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Overview

The TPS54302DDCT is a 4.5V to 28V input, 3A output synchronous buck converter designed for high efficiency and compact board layouts. It features a fixed 400kHz switching frequency and integrated high-side and low-side MOSFETs to minimize external component count. The device is particularly efficient at light loads due to its advanced Eco-mode pulse skip technology, which reduces quiescent current to 45 microamps.

Why Choose This Part

This regulator simplifies design through internal loop compensation and a built-in 5ms soft start. It includes frequency spread spectrum to lower peak EMI and hiccup-mode overcurrent protection for robust fault recovery. The TSOT-23-6 package combined with the 400kHz frequency allows for a very small total solution footprint while maintaining 3A capability.

Applications

Distributed Power Systems

Provides a 3A point-of-load regulation for 12V and 24V industrial or automotive bus voltages.

White Goods

Efficient power conversion for home appliance control boards requiring a robust step-down solution.

Consumer Electronics

Ideally suited for digital TVs, set-top boxes, and printers where space and thermal management are critical.

Audio Systems

Powering internal digital and analog rails with frequency spread spectrum to reduce EMI signatures.

Key Specifications

Function Step-Down

Topology Buck

Output Type Adjustable

Mounting Type Surface Mount

Package / Case SOT-23-6 Thin, TSOT-23-6

Current - Output 3A

Number of Outputs 1

Output Configuration Positive

Frequency - Switching 400kHz

Operating Temperature -40degC ~ 125degC (TJ)

Synchronous Rectifier Yes

Voltage - Input (Max) 28V

Voltage - Input (Min) 4.5V

Voltage - Output (Max) 28V

Supplier Device Package SOT-23-THIN

Voltage - Output (Min/Fixed) 0.596V

Getting Started

Designers should use the TI WEBENCH Power Designer tool to calculate the external resistor divider for the desired output voltage and select appropriate output inductors. Layout is critical; ensure the input bypass capacitors are placed as close as possible to the VIN and GND pins to minimize switching noise. Evaluation can be performed using the TPS54302EVM-716 assessment module.

Also Consider

MP2315GJ MPSMonolithic Power Systems (MPS) - A high-efficiency synchronous buck converter in a similar TSOT-23-8 package with a higher 500kHz switching frequency.

LMR14030SDDAR TITexas Instruments - Suitable for applications requiring a higher input voltage tolerance up to 40V while maintaining a 3A output.