LM2596S 3.3V Fixed DC-DC Buck Converter Module
HighEfficiency 3A StepDown Voltage Regulator
The LM2596S3.3 is a fixedoutput voltage regulator that steps down higher DC voltages to a stable 3.3V output. As part of Texas Instruments' SIMPLE SWITCHER® series, it is designed for easy implementation with minimal external components [citation:1][citation:3].
Fixed 3.3V Output - Provides a stable 3.3V rail for powering sensors, microcontrollers, and logic circuits [citation:1].
High Current Capability - Drives loads up to 3A with excellent line and load regulation [citation:3][citation:5].
Input Voltage Range: 4.5V to 40V DC [citation:1][citation:4].
Output Voltage: Fixed 3.3V DC ±4% tolerance [citation:1][citation:3].
Output Current: Up to 3A (requires heatsink for continuous high current) [citation:3][citation:9].
Switching Frequency: 150 kHz, enabling smaller external components [citation:3][citation:4].
Operating Temperature: -40°C to +125°C [citation:4][citation:6].
Key Features
+Simple to use with only 4 external components required.
+Internal frequency compensation and fixed-frequency oscillator for stable operation [citation:3].
+Thermal shutdown and current-limit protection for robust performance [citation:5][citation:9].
+Low power standby mode with typical 80µA shutdown current [citation:3][citation:5].
= Applications =
- Efficient on-card switching regulators [citation:1].
- Powering 3.3V microcontrollers and logic devices.
- Step-down conversion in industrial and consumer electronics [citation:6].
- Battery-powered equipment.
Simple StepDown Solution Minimal component count and easy to use.
Industry Proven Widely used and welldocumented regulator.
√ Available as a bare IC in a surfacemount TO263 package [citation:1][citation:4] and as readytouse modules.
√ Features thermal and current-limit protection.
