Texas Instruments UA78M05CKCE3

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Product attributes Property Value
Manufacturer Texas Instruments
Product Series
Packaging Bulk |
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 0°C ~ 125°C
Grade -
Qualification -
Mounting Type Through Hole
Package / Case TO-220-3
Supplier Device Package TO-220-3

The UA78M05CKCE3 from Texas Instruments is a fixed 5V linear regulator delivering up to 500mA. Housed in a TO-220 package, it offers excellent ripple rejection (80dB at 120Hz) and a dropout voltage of 2V at 350mA. This LDO is ideal for industrial and consumer applications requiring a clean, stable 5V rail from higher input voltages.

  • High Output Accuracy: Fixed 5V output with tight regulation ensures reliable operation for logic circuits.
  • Excellent Noise Rejection: 80dB PSRR at 120Hz filters AC ripple effectively.
  • Robust Thermal Performance: TO-220 package dissipates heat efficiently for continuous 500mA loads.
  • Simple Design: Requires only input/output capacitors, reducing BOM cost.

Industrial Power Supplies

Provides stable 5V rail for microcontrollers and sensors in factory automation, leveraging 500mA capacity and 80dB PSRR to reject line noise.

Consumer Electronics

Ideal for set-top boxes and gaming peripherals needing clean 5V from a 9V or 12V adapter, with TO-220 package for easy heatsinking.

Test & Measurement Equipment

Low output noise and high PSRR ensure accurate ADC references in benchtop meters and data acquisition systems.

Automotive Aftermarket

Regulates vehicle battery voltage (12V) down to 5V for dashcams or sensor hubs, with robust thermal performance in TO-220.

Networking Devices

Powers logic and interface ICs in routers and switches, offering reliable 5V at up to 500mA with minimal external components.

Q: What is the output voltage of the UA78M05CKCE3?
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 is 5V (typical application requires higher input, e.g., 7-25V for 5V out).
Q: What is the dropout voltage?
A: Dropout is 2V at 350mA load.
Q: What is the package type?
A: Available in TO-220-3 package.
Q: Does it have good ripple rejection?
A: Yes, PSRR is 80dB at 120Hz.
Base Product Number : UA78M05CKCE3
500mA 5V Fixed Output High PSRR LDO Linear Regulator Texas Instruments TO-220-3
Q: What is the output voltage of the UA78M05CKCE3?
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 is 5V (typical application requires higher input, e.g., 7-25V for 5V out).
Q: What is the dropout voltage?
A: Dropout is 2V at 350mA load.
Q: What is the package type?
A: Available in TO-220-3 package.
Q: Does it have good ripple rejection?
A: Yes, PSRR is 80dB at 120Hz.