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TPS79328DBVRM3

TITPS79328DBVRM3

Texas Instruments
Linear Voltage Regulator IC Positive Fixed 1 Output 200mA SOT-23-5
Active3,000 in stock
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Overview

The TPS79328DBVRM3 is a high power-supply rejection ratio (PSRR), low-noise, low-dropout (LDO) linear regulator from Texas Instruments. It provides a fixed 2.8V output from an input up to 5.5V, delivering up to 200mA of current. This device is specifically designed for noise-sensitive applications where a stable, clean power rail is required in a small SOT-23-5 footprint.

Why Choose This Part

This LDO features an exceptionally low-noise performance and high PSRR, making it ideal for RF and analog stages. It includes integrated protection such as under-voltage lockout (UVLO), reverse current protection, over-temperature shutdown, and over-current limiting. The small SOT-23 package and 250uA quiescent current provide a balance of thermal performance and power efficiency for space-constrained designs.

Applications

RF Transceiver Power
Providing clean power to low-noise amplifiers (LNAs) and local oscillators to minimize phase noise and jitter.
VCO and PLL Supply
Utilizing high PSRR to isolate sensitive analog circuitry from switching regulator noise in digital systems.
Portable Wireless Devices
Delivering efficient, low-dropout regulation for battery-powered handheld equipment requiring a 2.8V rail.
High-Precision Analog Frontend
Powering 2.8V ADCs or DACs where voltage stability and low ripple are critical for signal integrity.

Key Specifications

Output Type Fixed
Mounting Type Surface Mount
Package / Case SC-74A, SOT-753
Control Features Enable
Current - Output 200mA
Protection Features Over Current, Over Temperature, Reverse Current, Under Voltage Lockout (UVLO)
Number of Regulators 1
Output Configuration Positive
Operating Temperature -40degC ~ 125degC (TJ)
Voltage - Input (Max) 5.5V
Current - Supply (Max) 1 mA
Supplier Device Package SOT-23-5
Current - Quiescent (Iq) 1 mA
Voltage - Output (Min/Fixed) 2.8V

Getting Started

To implement this part, place a high-quality ceramic bypass capacitor (typically 10nF) at the NR (noise reduction) pin and ensure input/output capacitors are placed as close to the device pins as possible. Use the Enable (EN) pin to toggle power for energy-saving states in battery-powered designs. Thermal relief patterns should be included in the PCB layout to manage heat dissipation at the maximum 200mA load.