LD1117S50TR

$0.30

Description：IC REG LINEAR 5V 800MA SOT-223
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:945f846df363 Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Brand: STMicroelectronics

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Product introduction

Product Detailed Parameters

Description：IC REG LINEAR 5V 800MA SOT-223
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR),Cut Tape (CT)
Output Configuration：Positive
Output Type：Fixed
Number of Regulators：1
Voltage - Input (Max)：15V
Voltage - Output (Min/Fixed)：5V
Voltage - Output (Max)：-
Voltage Dropout (Max)：1.2V @ 800mA
Current - Output：800mA
Current - Quiescent (Iq)：10 mA
Current - Supply (Max)：-
PSRR：75dB (120Hz)
Control Features：-
Protection Features：Over Current, Over Temperature
Operating Temperature：0°C ~ 125°C
Mounting Type：Surface Mount
Package / Case：TO-261-4, TO-261AA
Supplier Device Package：SOT-223
Grade：-
Qualification：-

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LD1117S50TR

Overview

The LD1117S50TR is a fixed-output low-dropout linear voltage regulator manufactured by STMicroelectronics. It provides a stable positive output voltage of 5V with a maximum continuous output current capability of up to 800mA. The device operates within an input voltage range of up to 15V and features a typical dropout voltage of 1V at full load. It utilizes a SOT-223 surface-mount package with four pins, including a thermal tab for heat dissipation. The component supports operation across a temperature range from 0°C to +125°C and incorporates internal protection mechanisms against overcurrent and thermal overload conditions.

Feature Summary

Fixed 5V output voltage with ±1% tolerance at 25°C
Low dropout voltage characteristic for efficient power conversion
Integrated thermal and current limiting protection circuits
High efficiency NPN pass transistor design

Applications

DC-DC converter post-regulation stages
Battery-powered equipment power supplies
General-purpose embedded system voltage regulation
Three-phase motor drive gate driver power supplies

Procurement Notes

Verify the specific suffix 'TR' indicates tape-and-reel packaging configuration when sourcing. Confirm the manufacturer is STMicroelectronics to ensure authenticity. Check datasheet revisions for any potential pinout or electrical parameter updates. Ensure the receiving facility handles ESD-sensitive components appropriately during installation.

Selection Notes

Select this component when a fixed 5V rail is required with moderate current demands up to 800mA. The SOT-223 package offers a balance between thermal performance and board space savings compared to through-hole options. Consider the 1V dropout requirement relative to the minimum input voltage available in the design. Internal protections simplify circuit design by reducing the need for external safeguarding components.

Part Context

This part belongs to the LD1117 family of low-dropout regulators, which includes adjustable versions and other fixed voltage outputs such as 3.3V. The family is designed for applications requiring high efficiency and tight voltage tolerance. The SOT-223 variant specifically targets surface-mount assembly processes while maintaining robust thermal characteristics suitable for compact electronic designs.