Texas Instruments LM337LM/NOPB

Mfr. Part

LM337LM/NOPB

Manufacturer

Luminary Micro Texas Instruments. Y-IC is a quality distributor for this brand. We will provide you with the best products and services, fast response, and reliable supply support

Detailed Description

Adjustable negative linear voltage regulator in 8-SOIC for surface mount. Output adjustable from about −1.2 V to −37 V with up to 100 mA output current. Operates from inputs down to −40 V. Good ripple rejection at 120 Hz. Built-in short circuit and thermal shutdown protection. RoHS3 compliant. Stock available 16189 units

Key Features

Type Adjustable negative linear regulator

Output range Approximately −1.2 V to −37 V

Output current Up to 100 mA

Input voltage rating Down to −40 V

PSRR 60 dB at 120 Hz

Protections Over temperature and short circuit

Package 8-SOIC for SMD assemblies

Operating temperature −25 C to 125 C

Single channel One regulator per device

Compliance RoHS3 compliant

Base product number LM337 family

Key Advantages

Wide adjustable negative output range to cover most analog rails

Simple design and easy external setting with two resistors

Solid mains frequency ripple rejection helps clean up transformer or rectifier supplies

Built-in protections increase robustness and reduce external parts

Mature, well known device with broad ecosystem and app notes

Compact SOIC package saves board space compared with through hole options

Cost effective way to generate a stable negative rail

Packaging

Package type 8-SOIC JEDEC MS 012 style plastic molded

Material Molded epoxy body with copper leadframe and matte tin lead finish lead free

Size Body about 4.9 mm x 3.9 mm width 0.154 in 3.90 mm standard SOIC width typical height about 1.5 to 1.75 mm lead pitch 1.27 mm

Pin configuration Key functional pins are IN negative input OUT regulated negative output and ADJ adjust reference. In SOIC packages several leads are often internally tied to IN or OUT to reduce impedance and improve thermal spreading. Refer to the datasheet for the exact pin assignment

Thermal characteristics Junction to ambient thermal resistance typically about 100 to 160 C W on a JEDEC 2 layer board. Junction to case typically in the tens of C W. Thermal shutdown engages at high junction temperature. Actual values depend on layout copper area and airflow

Electrical properties Output current 100 mA max. Input rating to −40 V. Output settable to about −1.2 V to −37 V with external resistors. PSRR about 60 dB at 120 Hz. Requires input a few volts more negative than output for proper regulation

Shipping form Bulk

Lifecycle

Status Active and in regular production. Not nearing discontinuation based on current market status

Direct family alternatives Same function different package or current rating

- LM337LZ NOPB Texas Instruments TO 92 100 mA

- LM337IMP NOPB Texas Instruments SOT 223 higher current capability compared with L version

- LM337 series 1.5 A versions in TO 220 and D2PAK for higher current designs

Cross vendor functional alternatives Check pinouts and ratings before use

- LM337L series from multiple vendors such as ON Semiconductor and STMicroelectronics for 100 mA class adjustable negative regulators

- ADP7182 Analog Devices adjustable negative LDO 200 mA when very low dropout is needed

- LT1964 Analog Devices adjustable negative LDO 200 mA low noise option

If you need pin compatible drop in options in 8 SOIC or help choosing the best alternative please contact our sales team via our website for up to date guidance

Key Application Areas

Generate a clean negative rail for op amps comparators data converters and analog signal conditioning

Dual supply analog systems that need plus minus rails

Audio equipment preamps filters and headphone amps requiring a quiet negative supply

Industrial control and process instrumentation

Test and measurement equipment

Communication and networking gear needing auxiliary negative bias rails

General purpose bench and lab supplies

Datasheet

Our website hosts the most authoritative datasheet for LM337LM NOPB. We recommend downloading it from this page to get exact pin assignments thermal data typical performance curves and application examples

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