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TSRN 1-2450SM

TSRN 1-2450SM

Traco Power
Linear Regulator Replacement DC DC Converter 1 Output 5V 1A 6.5V - 42V Input
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Overview

The TSRN 1-2450SM is a 1 Amp step-down switching regulator designed to be a high-efficiency drop-in replacement for inefficient 78xx series linear regulators. This surface-mount module accepts a wide input voltage range from 6.5V to 42V and provides a stable 5V output with up to 91.5 percent efficiency, eliminating the need for a heatsink in most applications.

Why Choose This Part

The module offers a significant thermal advantage over linear regulators by operating at 91.5 percent efficiency, which reduces board temperature and increases reliability. It features a wide input range up to 42V and includes integrated filter capacitors, remote on/off control, and continuous short-circuit protection with automatic recovery.

Applications

Point-of-Load Regulation
Efficiently stepping down high-voltage industrial rails to 5V for logic circuits and sensors without generating excessive heat.
Battery Powered Systems
Extending battery life in portable equipment by utilizing a low 4mA standby current and high conversion efficiency.
Distributed Power Architectures
Providing local 5V regulation in systems where a central 12V or 24V supply is distributed across a PCB.

Key Specifications

Type Linear Regulator Replacement
Features Remote On/Off, OTP, SCP
Efficiency 91.5%
Applications ITE (Commercial)
Mounting Type Surface Mount
Power (Watts) 5 W
Package / Case 10-SMD Module, 6 Leads
Size / Dimension 0.60" L x 0.37" W x 0.29" H (15.2mm x 9.3mm x 7.4mm)
Number of Outputs 1
Voltage - Output 1 5V
Operating Temperature -40degC ~ 85degC (With Derating)
Voltage - Input (Max) 42V
Voltage - Input (Min) 6.5V
Current - Output (Max) 1A

Getting Started

To implement the TSRN 1-2450SM, ensure the PCB layout follows Traco Power soldering profiles for 10-SMD modules. While the module includes internal filtering, adding external low-ESR capacitors close to the pins can further reduce output ripple. Use the Remote On/Off pin for power sequencing or to enter a low-power standby mode when the output is not required.

TSRN 1-2450 Family

Also available as: TSRN 1-2450

Also Consider

TSR 1-2450SM Traco Power - A similar SMD non-isolated regulator with a different pinout configuration that may suit specific layout requirements.