Texas Instruments UA78M05IKCS
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $3.51 | $3.51 |
| 15+ | $3.39 | $50.85 |
| 25+ | $3.32 | $83.00 |
| 50+ | $3.14 | $157.00 |
| 100+ | $2.77 | $277.00 |
| N+ | $0.55 | Price Inquiry |
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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 |
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.
- 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.

UA78M05IKCS.pdf