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LM2596S-5.0/NOPB

TILM2596S-5.0/NOPB

Texas Instruments
Fixed 5.0 V version of the same LM2596 family for simpler designs that do not require an adjustable output.
NRND8,555 in stock
Datasheet Digi-Key Mouser Compare Prices

Overview

The LM2596S-5.0/NOPB is a monolithic step-down switching regulator (buck converter) designed to provide a fixed 5.0V output at up to 3A of load current. It operates at a fixed internal frequency of 150kHz and can accept an input voltage of up to 40V, making it a robust choice for high-current power management applications.

Why Choose This Part

The fixed 5.0V output version simplifies design by eliminating the need for external feedback resistors and ensuring precision output regulation. Its high 150kHz switching frequency allows for smaller filter components, while integrated features like thermal shutdown and current limiting provide robust circuit protection.

Applications

Local 5V Power Rails
Generating a stable 5V supply for digital logic, microcontrollers, and interface circuits from higher voltage industrial or battery sources.
High-Efficiency Pre-Regulators
Efficiently stepping down a variable input voltage (up to 40V) to 5V before feeding linear regulators to minimize heat dissipation.
On-Card Switching Regulators
Providing localized power conversion on PCBs where 3A current capability is required without the complexity of an external switching transistor.

Key Specifications

Function Step-Down
Topology Buck
Output Type Fixed
Mounting Type Surface Mount
Package / Case TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
Current - Output 3A
Number of Outputs 1
Output Configuration Positive
Frequency - Switching 150kHz
Operating Temperature -40degC ~ 125degC (TJ)
Synchronous Rectifier No
Voltage - Input (Max) 40V
Voltage - Input (Min) 4.5V
Supplier Device Package TO-263 (DDPAK-5)
Voltage - Output (Min/Fixed) 5V

Getting Started

Design requires only four external components: an input capacitor, an output capacitor, a catch diode (Schottky recommended), and an inductor. Ensure the layout includes a large copper area for the TO-263 tab to provide adequate heat sinking during high-current operation.

Part of LM2596 / LM2576 Switching Regulator family » LM2596S

LM2596S Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Output Type Output V Stock
LM2596S-5.0/NOPB (this part) Fixed 5V 8,555
LM2596S-3.3/NOPB Fixed 3.3V 646
LM2596S-ADJ/NOPB Adjustable 1.2V 3,354
Also available as: LM2596S-ADJEVM, LM2596S-ADJ, LM2596S-5.0

Also Consider

LM2576S-5.0/NOPB TITexas Instruments - Lower 52kHz switching frequency alternative for designs where EMI reduction at higher frequencies is prioritized over component size.
L7805ABD2T-TR STMicroelectronics - A linear regulator alternative for low-noise applications if high efficiency and high input-to-output voltage differentials are not primary concerns.

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Categories

Power Management > DC-DC Converters