Texas Instruments UA78L05ACDR
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.30 | $0.30 |
| 15+ | $0.29 | $4.35 |
| 25+ | $0.29 | $7.25 |
| 50+ | $0.27 | $13.50 |
| 100+ | $0.24 | $24.00 |
| N+ | $0.05 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | |
| Packaging | Cut Tape (CT) | Tape & Reel (TR) |
| 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 | 0°C ~ 125°C |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Supplier Device Package | 8-SOIC |
| ROHS |
The UA78L05ACDR from Texas Instruments is a fixed 5V linear regulator with a maximum output current of 100mA. It comes in an 8-SOIC package and offers a dropout voltage of 1.7V at 40mA. This LDO provides a simple and reliable solution for generating a stable 5V supply in low-power applications.
- Fixed 5V Output: Simplifies design for standard 5V logic and analog circuits.
- Proven Reliability: The UA78L05 series is a well-established, industry-standard regulator.
- Compact SOIC Package: The 8-SOIC package is suitable for space-constrained designs.
- Low Cost: An economical solution for basic 5V regulation needs.
5V Logic Power Supply
Provide a stable 5V supply for legacy TTL logic, microcontrollers, and small digital circuits. The 100mA output is suitable for low-power logic and interface circuits.
Analog Reference Supply
Use the UA78L05ACDR to power analog circuits that require a clean 5V rail. The 49dB PSRR at 120Hz helps reduce power supply noise in audio and measurement applications.
Microcontroller Power
Power small 5V microcontrollers and their peripherals. The 8-SOIC package is easy to integrate into PCB designs, and the fixed 5V output simplifies the power supply section.
Isolated Power Supplies
In isolated DC-DC converters, this LDO can provide a post-regulated 5V output. It reduces ripple and ensures a stable voltage for sensitive downstream components.
Consumer Electronics
Provide a reliable 5V rail for remote controls, small appliances, and other consumer devices. The low cost and proven reliability of the UA78L05 series make it a popular choice.
- Q: What is the fixed output voltage?
- A: The fixed output voltage is 5V.
- 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 up to 5V (dropout voltage applies).
- Q: What is the dropout voltage?
- A: The dropout voltage is 1.7V at 40mA load.
- Q: What is the PSRR performance?
- A: The PSRR is 49dB at 120Hz.
- Q: What is the package type?
- A: The device is available in an 8-SOIC package.
- Q: What is the fixed output voltage?
- A: The fixed output voltage is 5V.
- 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 up to 5V (dropout voltage applies).
- Q: What is the dropout voltage?
- A: The dropout voltage is 1.7V at 40mA load.
- Q: What is the PSRR performance?
- A: The PSRR is 49dB at 120Hz.
- Q: What is the package type?
- A: The device is available in an 8-SOIC package.

UA78L05ACDR.pdf