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TPS7A4533KTTR

TITPS7A4533KTTR

Texas Instruments
Linear Voltage Regulator IC Positive Fixed 1 Output 1.5A TO-263 (DDPAK-5)
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Overview

The TPS7A4533KTTR is a low-dropout (LDO) linear voltage regulator from Texas Instruments designed for high-current applications up to 1.5A with a fixed 3.3V output. It is optimized for fast transient response and low noise, making it suitable for powering sensitive digital circuitry and logic. The device features integrated protection against reverse battery, over-current, and over-temperature conditions.

Why Choose This Part

The regulator is stable with standard 10-microfarad ceramic output capacitors, reducing PCB footprint and cost. It provides high output accuracy of 1 percent and incorporates specialized circuitry to control quiescent current during dropout. Furthermore, its reverse-current protection prevents damage if the output voltage is pulled higher than the input.

Applications

Microprocessor Power
Providing stable 3.3V rails for high-performance MCUs and FPGAs that require fast transient response.
Post-Regulator for Switching Supplies
Using high ripple rejection (68dB at 120Hz) to clean up noise from upstream DC-DC converters.
Industrial Control Systems
Reliable power delivery in environments ranging from -40 to 125 degrees Celsius.
Battery Powered Equipment
Utilizing reverse-battery protection and low shutdown current (1uA) to preserve battery life and safety.

Key Specifications

PSRR 68dB (120Hz)
Output Type Fixed
Mounting Type Surface Mount
Package / Case TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
Control Features Enable
Current - Output 1.5A
Protection Features Over Current, Over Temperature, Reverse Polarity
Number of Regulators 1
Output Configuration Positive
Operating Temperature -40degC ~ 125degC
Voltage - Input (Max) 20V
Voltage Dropout (Max) 0.45V @ 1.5A
Current - Supply (Max) 90 mA
Supplier Device Package TO-263 (DDPAK-5)
Current - Quiescent (Iq) 1.5 mA
Voltage - Output (Min/Fixed) 3.3V

Getting Started

When designing with the TO-263 package, ensure the large thermal tab is soldered to a significant copper plane for heat dissipation. Place a 10-microfarad ceramic capacitor close to the output pin to ensure stability. Use the Enable pin to manage power sequencing in multi-rail systems or to reduce current draw to 1uA in sleep modes.

Also Consider

MIC29150-3.3WT MCHPMicrochip Technology - High-current 1.5A LDO with very low dropout voltage suitable for high-efficiency linear regulation.

Categories

Power Management > LDO Voltage Regulators