LD1086V18

$0.78

Description：IC REG LINEAR 1.8V 1.5A TO220
Series：-
Mfr：STMicroelectronics
Package：Tube

SKU:9b4d6d3aa693 Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Brand: STMicroelectronics

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Product introduction

Product Detailed Parameters

Description：IC REG LINEAR 1.8V 1.5A TO220
Series：-
Mfr：STMicroelectronics
Package：Tube
Output Configuration：Positive
Output Type：Fixed
Number of Regulators：1
Voltage - Input (Max)：30V
Voltage - Output (Min/Fixed)：1.8V
Voltage - Output (Max)：-
Voltage Dropout (Max)：1.5V @ 1.5A
Current - Output：1.5A
Current - Quiescent (Iq)：10 mA
Current - Supply (Max)：-
PSRR：82dB (120Hz)
Control Features：-
Protection Features：Over Current, Over Temperature
Operating Temperature：-40°C ~ 125°C
Mounting Type：Through Hole
Package / Case：TO-220-3
Supplier Device Package：TO-220
Grade：-
Qualification：-

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LD1086V18

Overview

The LD1086V18 is a positive low dropout voltage regulator from STMicroelectronics, providing a fixed 1.8 V output with a maximum load current of 1.5 A. It operates within an input voltage range of 3.4 V to 30 V and features a typical dropout voltage of 1.3 V at full load. The device offers high precision with a voltage regulation accuracy of ±1% at 25 °C and maintains stability using only a minimum 10 μF output capacitor. It includes internal thermal limiting and power protection mechanisms.

Feature Summary

Fixed 1.8 V output with tight tolerance for precise supply requirements
High efficiency design where quiescent current flows into the load rather than being wasted
Internal thermal and power limiting protects against overload conditions
Pin-to-pin compatible with standard three-terminal adjustable regulators

Applications

Battery-powered systems requiring efficient linear regulation
Post-regulation stages in switching power supplies
Embedded logic and microcontroller power rails
General-purpose positive voltage regulation circuits

Procurement Notes

Verify the specific package variant (TO-220 or TO-220-3) required for your thermal and mechanical constraints. Confirm RoHS compliance status through official manufacturer documentation prior to finalizing procurement. Ensure adequate heat sinking is planned given the 1.5 A capability and potential power dissipation in high differential voltage applications.

Selection Notes

Select this component when a stable 1.8 V rail is needed with up to 1.5 A capacity. It is suitable for designs prioritizing simplicity and low noise over switching converter complexity. Consider the dropout voltage characteristics relative to your minimum input voltage to ensure regulation is maintained under all operating loads.

Part Context

This part belongs to the LD1086 series of low dropout regulators designed for high-current applications. The series supports various fixed output voltages and is available in multiple packages including TO-220 and D²PAK variants. It serves as a robust alternative to older PNP-based regulators by offering improved efficiency and tighter output tolerances.