LM1085ISX-ADJ/NOPB

$1.56

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

SKU:1b30e7b28521 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 POS ADJ 3A TO263
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)
Output Configuration：Positive
Output Type：Adjustable
Number of Regulators：1
Voltage - Input (Max)：29V
Voltage - Output (Min/Fixed)：1.25V
Voltage - Output (Max)：15V
Voltage Dropout (Max)：1.5V @ 3A
Current - Output：3A
Current - Quiescent (Iq)：10 mA
Current - Supply (Max)：-
PSRR：75dB (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-ADJ/NOPB

Overview

The LM1085ISX-ADJ/NOPB is a positive adjustable low-dropout linear regulator manufactured by Texas Instruments. It provides up to 3A of output current with an input voltage range supporting up to 29V. The device features a typical dropout voltage of 1.3V at full load and maintains a maximum differential input-output voltage of 15V. Operating within a junction temperature range of -40°C to +125°C, it utilizes a D2PAK-3 (TO-263-3) surface-mount package. Key electrical characteristics include a static current of 5mA and a power supply rejection ratio of approximately 75dB.

Feature Summary

Adjustable output voltage capability for flexible power rail configuration
Integrated thermal overload and short-circuit protection mechanisms
Low dropout performance enabling efficient regulation near input limits

Applications

General-purpose point-of-load regulation in industrial equipment
Power supply stages for embedded computing systems
Battery-powered devices requiring stable voltage conversion

Procurement Notes

Verify the specific suffix against the manufacturer's official datasheet to confirm pinout compatibility and regulatory compliance status. Ensure the ordering part number matches the exact package variant required for your PCB footprint. Cross-reference the RoHS and REACH declarations with current environmental standards before finalizing procurement orders.

Selection Notes

Select this component when a fixed 3A LDO is insufficient due to varying voltage requirements. The adjustable version allows customization via external resistors. Verify that the input voltage does not exceed the 29V absolute maximum rating under all operating conditions. Consider thermal management solutions given the TO-263 package constraints at high current loads.

Part Context

This device belongs to the LM1085 family of high-current positive regulators. It shares functional similarities with fixed-voltage variants like the LM1085ISX-3.3 but offers programmable output. The NOPB suffix indicates lead-free construction compliant with international environmental directives. It serves as a robust solution for medium-power applications requiring reliable linear regulation.