LD1117DTR

$0.62

Description：IC REG LIN POS ADJ 800MA 8-SOIC
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR)

SKU:b566995faf0e Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Brand: STMicroelectronics

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Product introduction

Product Detailed Parameters

Description：IC REG LIN POS ADJ 800MA 8-SOIC
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR)
Output Configuration：Positive
Output Type：Adjustable
Number of Regulators：1
Voltage - Input (Max)：15V
Voltage - Output (Min/Fixed)：1.25V
Voltage - Output (Max)：15V
Voltage Dropout (Max)：1.2V @ 800mA
Current - Output：800mA
Current - Quiescent (Iq)：5 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：8-SOIC (0.154", 3.90mm Width)
Supplier Device Package：8-SOIC
Grade：-
Qualification：-

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LD1117DTR

Overview

The LD1117DTR is a positive adjustable linear voltage regulator manufactured by STMicroelectronics, classified under PMIC LDO regulators. It features an 8-SOIC surface-mount package and delivers up to 800mA output current. The device supports an input voltage range up to 15V with an adjustable output voltage spanning from 1.25V to 15V. Key electrical specifications include a maximum dropout voltage of 1.2V at full load, a static current of 5mA, and a power supply rejection ratio of 75dB at 120Hz. It incorporates overcurrent and thermal overload protection functions and operates within a temperature range of 0°C to 125°C.

Feature Summary

Provides stable positive adjustable output voltage regulation for low-noise applications
Integrates internal current limiting and thermal shutdown mechanisms for robust circuit protection
Designed for efficient power management with low quiescent current consumption

Applications

Battery-powered systems requiring regulated power supplies
Post-regulation stages for switching power supplies
Local on-card voltage regulation for distributed power architectures

Procurement Notes

Verify component authenticity as the LD1117DTR is officially obsolete and no longer in production. Confirm that any available units are genuine STMicroelectronics products rather than surplus or refurbished items. Ensure compatibility with replacement components such as the MC33269DR2G if sourcing new inventory is required for long-term projects.

Selection Notes

Select this component only for legacy designs where the specific 8-SOIC footprint and adjustable voltage characteristics are mandatory. Evaluate alternative active parts like the MC33269 series if manufacturing longevity is a priority. Consider the fixed-output variants within the LD1117 family if adjustable settings are not strictly necessary for the target application.

Part Context

This part belongs to the LD1117 family of low-dropout linear regulators known for high ripple rejection and fast transient response. The DTR suffix indicates tape-and-reel packaging suitable for automated surface-mount assembly processes. As an obsolete item, it represents older generation PMIC technology compared to modern ultra-low noise alternatives.