LD2980ABU33TR

$0.62

Description：IC REG LINEAR 3.3V 50MA SOT89-3
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR)

SKU:259a3d571cb7 Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Brand: STMicroelectronics

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Product introduction

Product Detailed Parameters

Description：IC REG LINEAR 3.3V 50MA SOT89-3
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR)
Output Configuration：Positive
Output Type：Fixed
Number of Regulators：1
Voltage - Input (Max)：16V
Voltage - Output (Min/Fixed)：3.3V
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：Enable
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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LD2980ABU33TR

Overview

The LD2980ABU33TR is a positive fixed-output low-dropout (LDO) linear voltage regulator manufactured by STMicroelectronics. It provides a stable 3.3 V output with a maximum continuous current of 50 mA. The device operates within an input voltage range of 2.5 V to 16 V and features a typical dropout voltage of 120 mV at full load. It incorporates internal thermal overload and short-circuit protection circuits. The component supports logic-controlled electronic shutdown via the inhibit pin, reducing quiescent current to less than 1 µA in sleep mode. It is designed for stability with low ESR ceramic capacitors and operates across a temperature range of -40 °C to +125 °C.

Feature Summary

Ultra-low dropout voltage performance suitable for battery-powered systems
Logic-controlled electronic shutdown function for power management
Internal thermal and current limiting protection mechanisms
Stable operation with low ESR ceramic output capacitors

Applications

Battery-powered portable electronics
Low noise audio systems
Industrial control boards
Instrumentation equipment

Procurement Notes

Verify the specific suffix 'BU' against official STMicroelectronics documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with low ESR ceramic capacitors as required for stability. Confirm RoHS compliance status through the manufacturer's latest datasheet before procurement.

Selection Notes

Select this component when a fixed 3.3 V rail is required with minimal voltage drop under 50 mA loads. The A-version designation indicates tighter output voltage tolerance compared to standard variants. Consider the SOT-89 or similar package availability if space constraints exist, ensuring adequate thermal dissipation for the application environment.

Part Context

This part belongs to the LD2980 series of ultra-low drop voltage regulators from STMicroelectronics. The series is characterized by high accuracy and low quiescent current, making it distinct from higher-current LDOs like the LD29300. It serves as a power management solution for applications requiring efficient voltage regulation with minimal heat generation.