LM1117S-3.3/NOPB

Description：IC REG LINEAR 3.3V 800MA TO263
Series：LM1117-3.3
Mfr：Texas Instruments
Package：Tube

SKU:aad145bf0b51 Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Brand: Texas Instruments

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Product introduction

Product Detailed Parameters

Description：IC REG LINEAR 3.3V 800MA TO263
Series：LM1117-3.3
Mfr：Texas Instruments
Package：Tube
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)：1.2V @ 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-263-4, D2PAK (3 Leads + Tab), TO-263AA
Supplier Device Package：TO-263 (DDPAK-3)
Grade：-
Qualification：-

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LM1117S-3.3/NOPB

Overview

The LM1117S-3.3/NOPB is a fixed-output low-dropout linear regulator manufactured by Texas Instruments, providing a stable 3.3 V output with a maximum load current of 800 mA. It operates within an input voltage range up to 15 V and features a typical dropout voltage of 1.2 V at full load. The device ensures high precision with line regulation of 0.2% and load regulation of 0.4%. It includes built-in current limiting and thermal shutdown protection. The component is housed in a surface-mount SOT-223 package.

Feature Summary

Integrated current limiting and thermal shutdown mechanisms for robust operation under fault conditions
Low dropout voltage performance enabling efficient power conversion from higher input rails
Zener trimmed bandgap reference circuitry ensuring precise output voltage accuracy

Applications

Post regulator for switching DC-DC converters
Battery charger circuits
Portable instrumentation power supplies

Procurement Notes

Verify the specific suffix 'S' corresponds to the intended temperature grade and packaging configuration against the manufacturer's official orderable addendum. Confirm RoHS compliance status and ensure the selected variant matches the required operating junction temperature range for the target application environment.

Selection Notes

Select this component when a fixed 3.3 V rail is required with moderate current demands up to 800 mA. Ensure the input voltage provides sufficient headroom above the dropout threshold across all operating temperatures. Verify that the PCB layout accommodates the thermal requirements associated with the SOT-223 package for the expected power dissipation levels.

Part Context

This part belongs to the LM1117 family of low-dropout regulators produced by Texas Instruments. The series offers both adjustable and fixed voltage options in various packages including TO-220, TO-252, and WSON. The LM1117 is designed as a drop-in replacement for traditional 78xx series regulators while offering superior dropout characteristics and lower quiescent current consumption.