LM1117DTX-5.0/NOPB

Description：IC REG LINEAR 5V 800MA TO252-3
Series：-
Mfr：National Semiconductor
Package：Bulk

SKU:6bd7d3e2ae87 Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Brand: National Semiconductor

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Product introduction

Product Detailed Parameters

Description：IC REG LINEAR 5V 800MA TO252-3
Series：-
Mfr：National Semiconductor
Package：Bulk
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)：5 mA
Current - Supply (Max)：10 mA
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：TO-252-3
Grade：-
Qualification：-

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LM1117DTX-5.0/NOPB

Overview

The LM1117DTX-5.0/NOPB is a low-dropout linear regulator manufactured by Texas Instruments, originally part of the National Semiconductor portfolio. It provides a fixed 5 V output with a maximum load current of 800 mA. The device operates within an input voltage range up to 15 V and features a typical dropout voltage of 1.2 V at full load. It includes internal current limiting and thermal shutdown protection. The component is housed in a TO-252-3 surface-mount package and is rated for operation between -40 °C and +125 °C.

Feature Summary

Fixed 5 V output voltage with ±1% initial accuracy
Integrated current limit and thermal overload protection
Low dropout voltage capability for efficient power management

Applications

Battery-powered systems requiring efficient voltage regulation
Post-regulation for switching power supplies
On-card regulation for distributed power architectures

Procurement Notes

Verify that the manufacturer designation reflects Texas Instruments, as National Semiconductor was acquired. Confirm the suffix NOPB indicates lead-free and RoHS compliance. Ensure the DTX variant matches the required tape-and-reel packaging format rather than tube packaging. Cross-reference the specific date code and lot traceability requirements with the supplier's certification documentation before finalizing procurement orders.

Selection Notes

Select this component when a fixed 5 V rail is required from a higher input voltage source. The TO-252-3 package offers a balance of thermal performance and board space efficiency. Consider the 800 mA current limit for load requirements. Verify that the input voltage does not exceed the 15 V absolute maximum rating under all operating conditions. Ensure adequate heatsinking or copper pour area is available on the PCB to manage thermal dissipation at high load currents.

Part Context

This device belongs to the LM1117 family of low-dropout regulators. It shares pin compatibility with the industry-standard LM317 adjustable regulator but provides a fixed output option. The series is designed for applications where noise sensitivity and line/load regulation are critical. The transition from National Semiconductor to Texas Instruments maintains the functional specifications while updating manufacturing processes and compliance standards.