LD1117ADT33TR

$0.48

Description：IC REG LINEAR 3.3V 1A DPAK
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:3bb922c7dc47 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 1A DPAK
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)：3.3V
Voltage - Output (Max)：-
Voltage Dropout (Max)：1.3V @ 1A
Current - Output：1A
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-252-3, DPAK (2 Leads + Tab), SC-63
Supplier Device Package：DPAK
Grade：-
Qualification：-

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LD1117ADT33TR

Overview

The LD1117ADT33TR is a positive fixed linear low-dropout regulator manufactured by STMicroelectronics. It provides a fixed 3.3V output with a maximum continuous current of 1A. The device features a maximum input voltage of 15V and operates within a junction temperature range of 0°C to 125°C. It incorporates internal thermal overload and short-circuit protection mechanisms. The component is housed in a surface-mount DPAK package (TO-252-3) and exhibits a typical power supply rejection ratio of 75dB at 120Hz.

Feature Summary

Integrated thermal overload and short-circuit protection for enhanced operational safety
Low dropout voltage characteristic enabling efficient regulation with minimal input-output differential
High power supply rejection ratio to maintain stable output under varying input conditions

Applications

Battery-powered systems requiring stable voltage regulation
General-purpose power supplies in consumer electronics
Post-regulation stages for switching power converters

Procurement Notes

Verify the specific suffix 'DT' confirms the DPAK (TO-252-3) surface-mount package configuration. Confirm the 'A' prefix indicates the specific performance grade regarding line and load regulation accuracy. Ensure the ordering code matches the required tape-and-reel quantity specifications provided by the manufacturer for automated assembly processes.

Selection Notes

Select this component when a fixed 3.3V rail is required with up to 1A load capability. Verify that the input voltage remains within the 15V absolute maximum rating. Consider the thermal dissipation requirements inherent to the DPAK package under full load conditions. Ensure compatibility with surface-mount assembly techniques and standard reflow soldering profiles.

Part Context

This part belongs to the LD1117 family of low-dropout regulators from STMicroelectronics. The series offers various fixed output voltages and packaging options, including SOT-223 and TO-220 variants. The LD1117ADT33TR specifically utilizes the DPAK footprint, distinguishing it from other pin-compatible or functionally similar parts in the broader product line.