High power dc supply circuit using LM338k | 15V 5A DC
STMICROELECTRONICS LM338KIC, V REG ADJ 1.2/32V, TO-3-2, 338
The LM338k is a three-terminal 5 A adjustable voltage regulator. This article will unlock more details about LM338K.
LM338K Voltage Regulator: Datasheet, Circuit, Alternatives
STMICROELECTRONICS LM338KIC, V REG ADJ +1.2/32V, TO-3-2, 338 The LM338k is a three-terminal 5 A adjustable voltage regulator. This article will unlock more details about LM338K.
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Sep 8, 2021
Odelia Dorothea
LM338K
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LM338K CAD Model
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LM338K 3D Model
LM338K Description
The LM338K is an adjustable 3- terminal positive voltage regulator capable of supplying in excess of 5 A over a 1.2 V to 32 V output range. It is exceptionally easy to use and require only 2 resistors to set the output voltage. The careful circuit design has resulted in outstanding load and line regulation comparable to many commercial power supplies.
Specifications
STMicroelectronics LM338K technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics LM338K.
LM338K Tech Specifications
LM338K Tech Specifications
STMicroelectronics LM338K technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics LM338K.
| Product Attribute | Attribute Value | |
|---|---|---|
| Mount | Through Hole | |
| Mounting Type | Through Hole | |
| Package / Case | TO-204AA, TO-3 | |
| Number of Pins | 2Pins | |
| Weight | 6.40101g | |
| Operating Temperature | 0°C~125°C | |
| Packaging | Tube | |
| Tolerance | 5% | |
| JESD-609 Code | e3 | |
| Part Status | Obsolete | |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | |
| Number of Terminations | 2Terminations | |
| ECCN Code | EAR99 | |
| Terminal Finish | Tin (Sn) | |
| Power Rating | 50W |
| Product Attribute | Attribute Value | |
|---|---|---|
| Terminal Position | BOTTOM | |
| Terminal Form | PIN/PEG | |
| Number of Functions | 1Function | |
| Base Part Number | LM338 | |
| Pin Count | 2 | |
| Number of Outputs | 1Output | |
| Voltage - Input (Max) | 35V | |
| Output Voltage | 32V | |
| Output Type | Adjustable | |
| Max Output Current | 5A | |
| Output Configuration | Positive | |
| Max Output Voltage | 32V | |
| Number of Regulators | 1Regulator | |
| Min Input Voltage | 4.2V | |
| Protection Features | Over Current, Over Temperature |
| Product Attribute | Attribute Value | |
|---|---|---|
| PSRR | 75dB ~ 60dB (120Hz) | |
| Reference Voltage | 1.29V | |
| Dropout Voltage | 3V | |
| Dropout Voltage1-Nom | 3V | |
| Min Output Voltage | 1.2V | |
| Power Supply Rejection Ratio (PSRR) | 75dB | |
| Min Current Limit | 7A | |
| Load Regulation-Max(%) | 1% | |
| Height | 8.7mm | |
| Length | 39.5mm | |
| Width | 26.2mm | |
| REACH SVHC | No SVHC | |
| Radiation Hardening | No | |
| RoHS Status | ROHS3 Compliant | |
| Lead Free | Lead Free |
LM338K Features
■ Guaranteed 7 A peak output current
■ Guaranteed 5 A output current
■ Adjustable output down to 1.2 V
■ Line regulation typically 0.005 %/V
■ Load regulation typically 0.1 %
■ Guaranteed thermal regulation
■ Current limit constant with temperature
■ Standard 3-lead transistor package
LM338K Schematic
LM338K Typical Application Circuit
LM338K Alternatives
| Parts | Description | Manufacturer |
| LM138AKSTEEL POWER CIRCUITS | 1.2 V-32V ADJUSTABLE POSITIVE REGULATOR, MBFM2, METAL CAN, TO-3, 2 PIN | Texas Instruments |
| LM138K/883 POWER CIRCUITS | IC VREG 1.2 V-32 V ADJUSTABLE POSITIVE REGULATOR, MBFM2, METAL CAN, TO-3, 2 PIN, Adjustable Positive Single Output Standard Regulator | National Semiconductor Corporation |
| LM338K STEEL/NOPB POWER CIRCUITS | 1.2 V-32V ADJUSTABLE POSITIVE REGULATOR, MBFM2, GREEN, METAL CAN, TO-3, 2 PIN | Texas Instruments |
| LM138K-MIL/NOPB POWER CIRCUITS | 1.2 V-32V ADJUSTABLE POSITIVE REGULATOR, MBFM2, ROHS COMPLIANT, METAL CAN, TO-3, 3 PIN | Texas Instruments |
| M38510/11706SYA POWER CIRCUITS | IC VREG ADJUSTABLE POSITIVE REGULATOR, Adjustable Positive Single Output Standard Regulator | Linear Technology |
| FT138AK POWER CIRCUITS | Adjustable Positive Standard Regulator, 1.2V Min, 32V Max, MBFM2, METAL CAN, TO-3, 2 PIN | Force Technologies Ltd |
| FT338K POWER CIRCUITS | Adjustable Positive Standard Regulator, 1.2V Min, 32V Max, MBFM2, METAL CAN, TO-3, 2 PIN | Force Technologies Ltd |
| LT338AK POWER CIRCUITS | IC VREG 1.2 V-32 V ADJUSTABLE POSITIVE REGULATOR, MBFM2, METAL CAN, TO-3, 3 PIN, Adjustable Positive Single Output Standard Regulator | Linear Technology |
| SG138AK/883B POWER CIRCUITS | Regulator, 1 Output, BIPolar, | Microsemi Corporation |
| LM338MWC POWER CIRCUITS | 1.2 V-32V ADJUSTABLE POSITIVE REGULATOR, UUC, WAFER | Texas Instruments |
LM338K Package
LM338K Manufacturer
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Datasheet PDF
Download datasheets and manufacturer documentation for STMicroelectronics LM338K.
LM338K Documents
LM338K Documents
Download datasheets and manufacturer documentation for LM338K
Datasheets
LMx38
LM338K-STMicroelectronics-datasheet-5316166.pdf
LM338K-STMicroelectronics-datasheet-12516780.pdf
LM338K-STMicroelectronics-datasheet-14169815.pdf
LM338K-STMicroelectronics-datasheet-29584.pdf
LM338K-STMicroelectronics-datasheet-42005.pdf
LM338K-STMicroelectronics-datasheet-148272.pdf
LM338K-STMicroelectronics-datasheet-9804139.pdf
LM338K Documents
Frequently Asked Questions
What is LM338K rated for operation?
The LM338K is rated for operation from 0 °C to 125 °C.
What is LM338K?
The LM338K is an adjustable 3- terminal positive voltage regulator capable of supplying in excess of 5 A over a 1.2 V to 32 V output range. It is exceptionally easy to use and require only 2 resistors to set the output voltage. The careful circuit design has resulted in outstanding load and line regulation comparable to many commercial power supplies.
What package is LM338K available in?
It is available in a standard Steel TO-3 transistor package.
FAQ
What is LM338K rated for operation?
The LM338K is rated for operation from 0 °C to 125 °C.
What is LM338K?
The LM338K is an adjustable 3- terminal positive voltage regulator capable of supplying in excess of 5 A over a 1.2 V to 32 V output range. It is exceptionally easy to use and require only 2 resistors to set the output voltage. The careful circuit design has resulted in outstanding load and line regulation comparable to many commercial power supplies.
What package is LM338K available in?
It is available in a standard Steel TO-3 transistor package.
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