LD2980CU18TR

$0.86

Description：IC REG LINEAR 1.8V 50MA SOT89-3
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:d74c23c58ca4 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 50MA SOT89-3
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR),Cut Tape (CT)
Output Configuration：Positive
Output Type：Fixed
Number of Regulators：1
Voltage - Input (Max)：16V
Voltage - Output (Min/Fixed)：1.8V
Voltage - Output (Max)：-
Voltage Dropout (Max)：0.225V @ 50mA
Current - Output：50mA
Current - Quiescent (Iq)：150 µA
Current - Supply (Max)：1.2 mA
PSRR：63dB (1kHz)
Control Features：-
Protection Features：Over Current, Over Temperature
Operating Temperature：-40°C ~ 125°C
Mounting Type：Surface Mount
Package / Case：TO-243AA
Supplier Device Package：SOT-89-3
Grade：-
Qualification：-

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LD2980CU18TR

Overview

The LD2980CU18TR is a positive low-dropout linear voltage regulator manufactured by STMicroelectronics. It provides a fixed 1.8 V output with a maximum continuous current of 50 mA. The device operates within an input voltage range up to 16 V and features ultra-low quiescent current, typically 80 µA in active mode and less than 1 µA in shutdown mode when the inhibit pin is pulled low. It includes logic-controlled electronic shutdown functionality compatible with TTL levels. Internal protections include current limiting and thermal overload protection. The component is housed in a SOT-23-5 surface-mount package and supports operation across a temperature range from -40 °C to +125 °C.

Feature Summary

Ultra-low dropout voltage capability designed for stability with low ESR ceramic capacitors
Logic-controlled electronic shutdown function via dedicated inhibit pin
Internal current and thermal limit protection mechanisms

Applications

Battery-powered systems requiring low power consumption
Low noise instrumentation circuits
Industrial control boards
Audio systems

Procurement Notes

Verify the specific suffix 'CU18' confirms the 1.8 V fixed output variant. Confirm the 'TR' suffix indicates tape and reel packaging. Ensure compatibility with low ESR ceramic output capacitors as specified in the datasheet. Check RoHS compliance status for the specific manufacturing batch.

Selection Notes

Select this component for applications requiring a fixed 1.8 V rail with moderate current demands up to 50 mA. Consider its ultra-low quiescent current for battery life optimization. Verify that the load transient response meets system requirements due to the small SOT-23-5 package size.

Part Context

This part belongs to the LD2980 series of ultra-low drop voltage regulators. The series is characterized by high accuracy and suitability for low-noise, low-power environments. It shares common architectural features with other variants in the family, differing primarily in output voltage settings and package options.