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Product attributes Property Value
Manufacturer Texas Instruments
Product Series
Packaging Marketplace | Tube
Output Configuration Positive
Output Type Fixed
Number of Regulators 1
Voltage - Input (Max) 25V
Voltage - Output (Min/Fixed) 5V
Voltage - Output (Max) -
Voltage Dropout (Max) 2V @ 350mA
Current - Output 500mA
Current - Quiescent (Iq) -
Current - Supply (Max) -
PSRR 80dB (120Hz)
Control Features -
Protection Features Over Current, Over Temperature, Short Circuit
Operating Temperature -40°C ~ 125°C
Grade -
Qualification -
Mounting Type Through Hole
Package / Case TO-220-3
Supplier Device Package TO-220-3
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The UA78M05IKCS is a fixed 5V linear regulator from Texas Instruments, capable of delivering up to 500mA. Housed in a robust TO-220-3 package, it offers excellent ripple rejection of 80dB at 120Hz, making it suitable for noise-sensitive applications. Its 2V dropout at 350mA ensures reliable operation with moderate headroom.

  • High Ripple Rejection: 80dB at 120Hz ensures clean output for audio and precision analog circuits.
  • Thermal Efficiency: TO-220 package allows effective heat sinking for continuous 500mA operation.
  • Proven Reliability: Texas Instruments' legacy 78M series design ensures long-term stability.
  • Simple Fixed Output: No external resistor divider needed for 5V regulation.

Industrial Control Systems

Provides a stable 5V rail for microcontrollers and logic circuits in noisy industrial environments, leveraging its 80dB PSRR at 120Hz to reject line-frequency hum.

Consumer Electronics Power Supply

Ideal for post-regulation in set-top boxes and audio equipment where a clean, fixed 5V supply is required for analog and digital mixed-signal circuits.

Test and Measurement Equipment

Ensures precise voltage references for ADC/DAC stages, with the TO-220 package facilitating heat dissipation under continuous 500mA loads.

Automotive Infotainment

Regulates battery voltage to a stable 5V for display panels and audio processors, with the 2V dropout allowing operation during cold-crank conditions.

Networking Equipment

Powers Ethernet PHY and switch ICs, providing low-noise 5V output that minimizes bit errors in high-speed data transmission.

Q: What is the output voltage of the UA78M05IKCS?
A: The fixed output voltage is 5V.
Q: What is the maximum output current?
A: It can deliver up to 500mA.
Q: What is the input voltage range?
A: The input voltage range is not specified in the provided data; typically it supports up to 25V, but please verify with the datasheet.
Q: What is the dropout voltage?
A: The dropout voltage is 2V at 350mA load.
Q: What is the package type?
A: It comes in a TO-220-3 package.
Q: What is the PSRR performance?
A: It offers 80dB ripple rejection at 120Hz.
Base Product Number : UA78M05
500mA 5V Fixed Output High PSRR LDO Linear Regulator Texas Instruments TO-220-3
Q: What is the output voltage of the UA78M05IKCS?
A: The fixed output voltage is 5V.
Q: What is the maximum output current?
A: It can deliver up to 500mA.
Q: What is the input voltage range?
A: The input voltage range is not specified in the provided data; typically it supports up to 25V, but please verify with the datasheet.
Q: What is the dropout voltage?
A: The dropout voltage is 2V at 350mA load.
Q: What is the package type?
A: It comes in a TO-220-3 package.
Q: What is the PSRR performance?
A: It offers 80dB ripple rejection at 120Hz.