LM1085ISX-12/NOPB

$2.46

Description：IC REG LINEAR 12V 3A TO263
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:f0afb415f0ac 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 12V 3A TO263
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)
Output Configuration：Positive
Output Type：Fixed
Number of Regulators：1
Voltage - Input (Max)：18V
Voltage - Output (Min/Fixed)：12V
Voltage - Output (Max)：-
Voltage Dropout (Max)：1.5V @ 3A
Current - Output：3A
Current - Quiescent (Iq)：10 mA
Current - Supply (Max)：-
PSRR：60dB (120Hz)
Control Features：-
Protection Features：Over Current, Over Temperature
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：TO-263-4, D2PAK (3 Leads + Tab), TO-263AA
Supplier Device Package：TO-263 (DDPAK-3)
Grade：-
Qualification：-

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LM1085ISX-12/NOPB

Overview

The LM1085ISX-12/NOPB is a Texas Instruments linear low-dropout (LDO) voltage regulator featuring a fixed 12V output and a maximum continuous current of 3A. It operates within an input voltage range up to 18V and supports junction temperatures from -40°C to +125°C. The device utilizes a TO-263 (DDPAK-3) surface-mount package with a thermal pad for heat dissipation. Key electrical characteristics include a maximum dropout voltage of 1.5V at full load, a typical power supply rejection ratio (PSRR) of 60dB at 120Hz, and a quiescent current of 10mA. Internal protections include overcurrent limiting and thermal shutdown.

Feature Summary

Provides stable 12V regulation with 3A output capability
Integrated overcurrent and thermal protection mechanisms
Designed for efficient heat dissipation via exposed thermal pad

Applications

General-purpose positive fixed voltage regulation
Pre-regulator stages for switching converters
Battery-powered systems requiring linear regulation

Procurement Notes

Verify component authenticity through authorized channels as this part may be discontinued. Confirm the specific suffix matches the required package and temperature grade. Request original manufacturer documentation to validate RoHS compliance and lead times. Ensure the supplier provides traceability records for critical applications. Cross-reference datasheet revisions to confirm pinout consistency.

Selection Notes

Select this component when a fixed 12V output is required with high current capacity. Consider the 1.5V dropout voltage for input voltage headroom calculations. Evaluate thermal management requirements due to the 3A output capability in a D2PAK package. Compare PSRR specifications against noise-sensitive application needs. Verify that the 18V maximum input rating aligns with the system supply rails.

Part Context

This device belongs to the LM1085 family of adjustable and fixed LDO regulators. It shares architectural similarities with other members like the LM1085IS-3.3 but differs in output voltage configuration. The series is known for robust performance in industrial and consumer electronics. The 'NOPB' suffix indicates a lead-free, halogen-free compliant version of the standard LM1085IS-12.