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Product attributes Property Value
Manufacturer National Semiconductor
Product Series
Packaging Bulk |
Output Configuration Positive
Output Type Fixed
Number of Regulators 1
Voltage - Input (Max) 15V
Voltage - Output (Min/Fixed) 2.5V
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
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case TO-261-4, TO-261AA
Supplier Device Package SOT-223

The LM1117MP-2.5 is a fixed 2.5V low dropout linear regulator capable of delivering 800mA of output current. Housed in a compact SOT-223 package, it features a low dropout voltage of 1.2V and excellent ripple rejection of 75dB at 120Hz, making it ideal for noise-sensitive applications. Its 5mA quiescent current ensures efficient operation in battery-powered systems.

  • Stable 2.5V Output: Fixed output eliminates external resistor divider, simplifying design and improving accuracy.
  • High Current Capacity: 800mA output supports a wide range of digital and analog loads.
  • Excellent Ripple Rejection: 75dB PSRR at 120Hz ensures clean power for sensitive audio and RF circuits.
  • Compact SOT-223 Package: Small footprint saves PCB space for space-constrained designs.

Digital Logic Power Supply

Provides a stable 2.5V rail for low-voltage digital ICs, microcontrollers, and DSPs, ensuring reliable operation with 800mA capacity.

Battery-Powered Devices

With a low dropout of 1.2V, it efficiently regulates from a 3.7V Li-ion battery down to 2.5V, maximizing battery life.

Post-Regulation for Switching Supplies

Reduces ripple and noise from a DC-DC converter, delivering clean 2.5V power for sensitive analog circuits.

FPGA and CPLD Core Voltage

Supplies the core voltage for FPGAs requiring 2.5V, with 800mA current capability for moderate logic designs.

Industrial Sensor Interfaces

Provides a stable reference voltage for analog-to-digital converters and sensor signal conditioning circuits.

Communication Modules

Powers RF transceivers and baseband processors that require a low-noise 2.5V supply, improving signal integrity.

Q: What is the fixed output voltage of the LM1117MP-2.5?
A: The LM1117MP-2.5 provides a fixed output voltage of 2.5V.
Q: What is the maximum output current?
A: It can deliver up to 800mA of output current.
Q: What is the input voltage range?
A: The input voltage must be at least 1.2V above the output (2.5V), so minimum input is approximately 3.7V; maximum input is typically 15V.
Q: What is the dropout voltage?
A: The dropout voltage is 1.2V at full load (800mA).
Q: What is the quiescent current?
A: The quiescent current is 5mA.
Q: What package is available?
A: It comes in the SOT-223 surface-mount package.
Base Product Number : LM1117MP
2.5V 800mA Fixed Output LDO Linear Regulator Low Dropout National Semiconductor SOT-223
Q: What is the fixed output voltage of the LM1117MP-2.5?
A: The LM1117MP-2.5 provides a fixed output voltage of 2.5V.
Q: What is the maximum output current?
A: It can deliver up to 800mA of output current.
Q: What is the input voltage range?
A: The input voltage must be at least 1.2V above the output (2.5V), so minimum input is approximately 3.7V; maximum input is typically 15V.
Q: What is the dropout voltage?
A: The dropout voltage is 1.2V at full load (800mA).
Q: What is the quiescent current?
A: The quiescent current is 5mA.
Q: What package is available?
A: It comes in the SOT-223 surface-mount package.