LM137H/NOPB

$19.64

Description：IC REG LINEAR NEG ADJ 1.5A TO3
Series：-
Mfr：Texas Instruments
Package：Bulk

SKU:70b19ae9ffcd Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Brand: Texas Instruments

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Product introduction

Product Detailed Parameters

Description：IC REG LINEAR NEG ADJ 1.5A TO3
Series：-
Mfr：Texas Instruments
Package：Bulk
Output Configuration：Negative
Output Type：Adjustable
Number of Regulators：1
Voltage - Input (Max)：-40V
Voltage - Output (Min/Fixed)：-1.2V
Voltage - Output (Max)：-37V
Voltage Dropout (Max)：-
Current - Output：1.5A
Current - Quiescent (Iq)：-
Current - Supply (Max)：-
PSRR：66dB (120Hz)
Control Features：-
Protection Features：Over Current, Over Temperature, Short Circuit
Operating Temperature：-55°C ~ 150°C
Mounting Type：Through Hole
Package / Case：TO-205AD, TO-39-3 Metal Can
Supplier Device Package：TO-3
Grade：-
Qualification：-

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LM137H/NOPB

Overview

The LM137H/NOPB is a negative adjustable linear voltage regulator manufactured by Texas Instruments. It provides an output current of 1.5 A with an adjustable output voltage range from -1.2 V to -37 V. The device accepts input voltages up to -40 V and operates within a junction temperature range of -55°C to 150°C. Key electrical specifications include a typical power supply rejection ratio (PSRR) of 66 dB at 120 Hz, a line regulation of 0.04 %/V, and a load regulation of 1 %. It features built-in protection against overcurrent, thermal overload, and short circuits.

Feature Summary

Adjustable negative output voltage capability for flexible power supply design
Integrated thermal overload and current limiting protection mechanisms
High power supply rejection ratio for effective noise suppression

Applications

Negative rail generation in dual-supply electronic systems
Industrial control power distribution networks
Test and measurement equipment requiring stable negative bias

Procurement Notes

Verify the component authenticity by checking the manufacturer marking against official datasheet specifications. Confirm the package type matches the required TO-3 metal can configuration. Ensure the NOPB suffix indicates lead-free compliance if RoHS standards are mandatory for the assembly process. Cross-reference the part number with authorized distributors to avoid counterfeit components.

Selection Notes

Select this regulator when a high-current negative voltage source is required. The TO-3 package offers superior thermal dissipation compared to plastic packages. Verify that the input voltage does not exceed the maximum rating of -40 V. Consider the thermal resistance characteristics for heat sink sizing under maximum load conditions.

Part Context

This component belongs to the LM137 series of three-terminal adjustable negative regulators. It serves as the negative counterpart to the LM317 positive regulator family. The device is designed for applications requiring robust performance in industrial environments. It utilizes a metal can package for enhanced thermal management and durability.