LD1117DT33CTR

$0.34

Description：IC REG LINEAR 3.3V 800MA DPAK
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:6d423b319cc4 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 800MA 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 @ 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：-40°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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LD1117DT33CTR

Overview

The LD1117DT33CTR is a positive fixed linear voltage regulator from STMicroelectronics, delivering up to 800 mA output current. It provides a fixed 3.3 V output with a maximum input voltage of 15 V. The device features a typical dropout voltage of 1.3 V at full load and maintains an output tolerance within ±1% at 25 °C. It operates over a temperature range of -40 °C to +125 °C and includes internal thermal overload and short-circuit protection.

Feature Summary

Provides stable regulated power for sensitive electronic circuits
Integrates internal current limiting and thermal shutdown mechanisms
Optimizes board space through compact surface-mount packaging

Applications

Battery-powered equipment requiring efficient voltage regulation
Post-regulation stages in switch-mode power supplies
On-card regulation for distributed power architectures

Procurement Notes

Verify the specific suffix 'DT' confirms the DPAK package variant rather than other available packages like SOT-223 or TO-220. Confirm the '33' designation matches the required 3.3 V output level. Ensure the component meets RoHS3 compliance requirements for your manufacturing process. Cross-reference the manufacturer part number against authorized distributor listings to confirm authenticity and traceability before finalizing procurement orders.

Selection Notes

Select this component when a fixed 3.3 V rail is needed with moderate current demands up to 800 mA. The DPAK package offers superior thermal dissipation compared to smaller surface-mount options. Consider the 15 V maximum input rating to ensure adequate headroom without exceeding limits. Verify that the system's ambient temperature remains within the specified operating range to maintain performance stability.

Part Context

This component belongs to the LD1117 family of low-dropout regulators designed for high-efficiency applications. The series utilizes an NPN pass transistor architecture to minimize quiescent current consumption. Other variants in the family offer different fixed voltages such as 1.2 V, 1.8 V, 2.5 V, and 5.0 V, alongside adjustable versions.