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LM1117MP-3.3/NOPB

LM1117MP-3.3/NOPB

Various
Widely available 3.3V linear regulator in a similar package and performance class.
NRND52,590 in stock

Overview

The LM1117MP-3.3/NOPB is a low-dropout linear regulator capable of providing up to 800mA of output current at a fixed 3.3V. It is a popular power management solution for providing local regulation in digital systems, industrial modules, and server power supplies. The device includes integrated current limiting and thermal protection to ensure circuit reliability during fault conditions.

Why Choose This Part

The LM1117 series offers a robust 800mA output capacity in a compact SOT-223 package, making it suitable for space-constrained designs requiring moderate current. It features internal thermal overload protection and current limiting to prevent damage during short circuits or overheating.

Applications

Industrial Power Modules
Regulating power for AC drive stages and servo drive control modules.
Network and Server PSU
Providing local 3.3V rails for merchant network hardware and server infrastructure.
Medical Imaging
Stable voltage regulation for sensitive ultrasound scanner electronics.
Embedded Logic Rails
General purpose 3.3V supply for microcontrollers and digital logic in industrial AC/DC converters.

Key Specifications

PSRR 75dB (120Hz)
Output Type Fixed
Mounting Type Surface Mount
Package / Case TO-261-4, TO-261AA
Current - Output 800mA
Protection Features Over Current, Over Temperature
Number of Regulators 1
Output Configuration Positive
Operating Temperature 0degC ~ 125degC
Voltage - Input (Max) 15V
Voltage Dropout (Max) 1.2V @ 800mA
Current - Supply (Max) 10 mA
Supplier Device Package SOT-223
Current - Quiescent (Iq) 5 mA
Voltage - Output (Min/Fixed) 3.3V

Getting Started

When designing with the LM1117MP-3.3/NOPB, ensure a minimum of 10uF tantalum capacitor is placed on the output to maintain stability and improve transient response. Designers should calculate the power dissipation (Vin - Vout) * Iout to ensure the SOT-223 package does not exceed the 125C maximum junction temperature.

LM1117 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Output Type Temp Range Output V Stock
LM1117MP-3.3/NOPB (this part) Fixed 0degC ~ 125degC 3.3V 52,590
LM1117MPX-5.0/NOPB (Texas Instruments) Fixed 0degC ~ 125degC 5V 2,995
LM1117MPX-1.8/NOPB (Texas Instruments) Fixed 0degC ~ 125degC 1.8V 2,787
LM1117IMPX-5.0/NOPB (Texas Instruments) Fixed -40degC ~ 125degC 5V 3,044
LM1117IMPX-ADJ/NOPB (Texas Instruments) Adjustable -40degC ~ 125degC 1.25V 6,420
Also available as: LM1117MPX-ADJ/NOPB, LM1117MPX-3.3/NOPB, LM1117T-3.3/NOPB

Also Consider

AMS1117-3.3 Advanced Monolithic Systems - A widely used, cost-effective alternative with a similar pinout and 800mA rating.
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