IC REG LIN NEG ADJ 1.5A TO220-3 The LM337 is an adjustable 3?terminal negative voltage regulator capable of supplying in excess of 1.5 A over an output voltage range of ?1.2 V to ?37 V. Furthermore, Huge range of Semiconductors, Capacitors, Resistors and IcS in stock. Welcome RFQ.
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Sep 28, 2021
Thomas Richard
simple lm337 voltage regulator
IC REG LIN NEG ADJ 1.5A TO220-3
The LM337 is an adjustable 3−terminal negative voltage regulator capable of supplying in excess of 1.5 A over an output voltage range of −1.2 V to −37 V. Furthermore, Huge range of Semiconductors, Capacitors, Resistors and IcS in stock. Welcome RFQ.
LM337T
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The LM337 is a Variable Negative Voltage Regulator that can output voltage from -1.25V to -37V with a maximum output current of -1.5A. The LM337 voltage regulator is exceptionally easy to use and requires only two external resistors to set the output voltage. Further, it employs internal current limiting, thermal shutdown and safe area compensation, making it essentially blow−out proof. The LM337 serves a wide variety of applications including local, on card regulation. This device can also be used to make a programmable output regulator, or by connecting a fixed resistor between the adjustment and output, the LM337 can be used as a precision current regulator.
The LM337 is the equivalent counterpart of the LM317 Positive Voltage regulator. The IC commonly used in Adjustable Lab Voltage generators in combination with the LM317 IC. It can also be used as Current Regulators and negative voltage protection circuits, refer the datasheet linked below for application circuits. The IC has three pins, in which the input voltage is supplied to VIN pin then using a pair of resistors (potential divider) we set a voltage at Adjust pin which will decide the output voltage of the IC that is given out at VOUT pin. Now to make it act as a variable voltage regulator we have to set variable voltages which can be done by using a potentiometer in the potential divider (R2 shown below).
This article provides you with a basic overview of the LM337 voltage regulator, including its pin descriptions, functions and specifications, etc., to help you quickly understand what LM337 is.
• Output Current in Excess of 1.5 A
• Output Adjustable between −1.2 V and −37 V
• Internal Thermal Overload Protection
• Internal Short Circuit Current Limiting Constant with Temperature
• Output Transistor Safe−Area Compensation
• Floating Operation for High Voltage Applications
• Eliminates Stocking many Fixed Voltages
• Available in Surface Mount D2PAK and Standard 3−Lead Transistor Package
• These Devices are Pb−Free and are RoHS Compliant
ON Semiconductor LM337T technical specifications, attributes, parameters and parts with similar specifications to ON Semiconductor LM337T.
ON Semiconductor LM337T technical specifications, attributes, parameters and parts with similar specifications to ON Semiconductor LM337T.
| Product Attribute | Attribute Value | |
|---|---|---|
| Lifecycle Status | LAST SHIPMENTS (Last Updated: 6 days ago) | |
| Mount | Through Hole | |
| Mounting Type | Through Hole | |
| Package / Case | TO-220-3 | |
| Number of Pins | 3Pins | |
| Weight | 1.214g | |
| Operating Temperature | 0°C~125°C | |
| Packaging | Tube | |
| Published | 2009 | |
| JESD-609 Code | e3 | |
| Pbfree Code | yes | |
| Part Status | Obsolete | |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | |
| Number of Terminations | 3Terminations | |
| ECCN Code | EAR99 | |
| Terminal Finish | Tin (Sn) |
| Product Attribute | Attribute Value | |
|---|---|---|
| Packing Method | RAIL | |
| Max Power Dissipation | 20W | |
| Terminal Position | SINGLE | |
| Number of Functions | 1Function | |
| Terminal Pitch | 2.54mm | |
| Current Rating | 1.5A | |
| Base Part Number | LM337 | |
| Pin Count | 3 | |
| Number of Outputs | 1Output | |
| Voltage - Input (Max) | -40V | |
| Output Voltage | -37V | |
| Output Type | Adjustable | |
| Max Output Current | 1.5A | |
| Output Configuration | Negative | |
| Max Output Voltage | -37V | |
| Number of Regulators | 1Regulator |
| Product Attribute | Attribute Value | |
|---|---|---|
| Min Input Voltage | -4.2V | |
| Protection Features | Over Temperature, Short Circuit | |
| PSRR | 60dB (120Hz) | |
| Reference Voltage | -1.287V | |
| Dropout Voltage1-Nom | 3V | |
| Min Output Voltage | -1.2V | |
| Power Supply Rejection Ratio (PSRR) | 60dB | |
| Height | 8.89mm | |
| Length | 10.16mm | |
| Width | 4.7mm | |
| REACH SVHC | No SVHC | |
| Radiation Hardening | No | |
| RoHS Status | RoHS Compliant | |
| Lead Free | Lead Free |
Representative Schematic Diagram
• Active SCSI terminators
• High efficiency linear regulators
• Post regulators for switching supplies
• Battery chargers
• 12V to 5V linear regulators
• Motherboard clock supplies
• Used for Positive voltage regulations
• Variable power supply
• Current limiting circuits
• Reverse polarity circuits
• Commonly used in Desktop PC, DVD and other consumer products
TO−220, SINGLE GAUGE
3-Lead TO-220 Package
On Semiconductor (Nasdaq: ON) is a manufacturer engaging itself in reducing energy use. It features a comprehensive portfolio of power, signal management, and logic, custom solutions that are energy efficient. It acts as a world-class supply chain with high reliability and a network of manufacturing facilities, sales, offices, and design centers in key markets through North America, Europe, and the Asia Pacific regions.
Download datasheets and manufacturer documentation for LM337T
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