Texas Instruments UA78L05AILP
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.39 | $1.39 |
| 15+ | $1.34 | $20.10 |
| 25+ | $1.31 | $32.75 |
| 50+ | $1.24 | $62.00 |
| 100+ | $1.10 | $110.00 |
| N+ | $0.22 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | |
| Packaging | Marketplace | Bulk |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 20V |
| Voltage - Output (Min/Fixed) | 5V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 1.7V @ 40mA |
| Current - Output | 100mA |
| Current - Quiescent (Iq) | - |
| Current - Supply (Max) | - |
| PSRR | 49dB (120Hz) |
| Control Features | - |
| Protection Features | Over Current, Over Temperature, Reverse Polarity, Short Circuit |
| Operating Temperature | -40°C ~ 125°C |
| Grade | - |
| Qualification | - |
| Mounting Type | Through Hole |
| Package / Case | TO-226-3, TO-92-3 (TO-226AA) |
| Supplier Device Package | TO-92-3 |
| ROHS |  |
The UA78L05AILP is a fixed 5V linear regulator from Texas Instruments, delivering up to 100mA in a compact TO-92-3 package. Its 1.7V dropout at 40mA and 49dB PSRR at 120Hz ensure stable output for low-power digital and analog circuits. Ideal for battery-powered devices, reference supplies, and industrial control applications.
- Stable 5V output – Fixed regulation eliminates external resistor networks, simplifying PCB design.
- Low dropout (1.7V @ 40mA) – Extends battery life by operating from lower input voltages.
- Compact TO-92-3 package – Fits space-constrained designs and is easy to hand-solder.
- 49dB PSRR at 120Hz – Reduces ripple from rectified AC supplies for cleaner analog rails.
5V Logic Supply for Microcontrollers
Provides a stable 5V rail for low-power MCUs and digital logic circuits, with 100mA capacity sufficient for basic control systems.
Reference Voltage Source
The fixed 5V output with 49dB PSRR at 120Hz makes it suitable as a reference for analog-to-digital converters in noisy environments.
Battery-Powered Instrumentation
With a low 1.7V dropout at 40mA, it efficiently regulates from a 6V or 9V battery down to 5V for portable sensors.
Industrial Sensor Interface
TO-92 package and 100mA output support simple sensor conditioning circuits requiring a clean 5V bias.
Audio Preamplifier Bias
The 49dB PSRR at 120Hz reduces mains hum in audio preamp stages powered from rectified AC supplies.
Automotive ECU Peripheral Supply
Provides regulated 5V for small automotive modules like window switches or mirror controllers, operating from the 12V bus.
- Q: What is the output voltage of the UA78L05AILP?
- A: The fixed output voltage is 5V DC.
- Q: What is the maximum output current?
- A: The maximum output current is 100mA.
- Q: What is the input voltage range?
- A: The input voltage range is not explicitly specified in the technical data; typical operation requires input above 6.7V for regulation.
- Q: What is the dropout voltage?
- A: The dropout voltage is 1.7V at 40mA load current.
- Q: What is the package type?
- A: The device comes in a TO-92-3 through-hole package.
- Q: What is the PSRR performance?
- A: The power supply rejection ratio is 49dB at 120Hz.
UA78L05AILP.pdf
- Q: What is the output voltage of the UA78L05AILP?
- A: The fixed output voltage is 5V DC.
- Q: What is the maximum output current?
- A: The maximum output current is 100mA.
- Q: What is the input voltage range?
- A: The input voltage range is not explicitly specified in the technical data; typical operation requires input above 6.7V for regulation.
- Q: What is the dropout voltage?
- A: The dropout voltage is 1.7V at 40mA load current.
- Q: What is the package type?
- A: The device comes in a TO-92-3 through-hole package.
- Q: What is the PSRR performance?
- A: The power supply rejection ratio is 49dB at 120Hz.
