Texas Instruments UA78L05ACLPME3
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.66 | $0.66 |
| 15+ | $0.16 | $2.40 |
| 25+ | $0.15 | $3.75 |
| 50+ | $0.14 | $7.00 |
| 100+ | $0.13 | $13.00 |
| N+ | $0.03 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | |
| Packaging | Tape & Box (TB) | Cut Tape (CT) |
| 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 | Through Hole |
| Package / Case | TO-226-3, TO-92-3 (TO-226AA) Formed Leads |
| Supplier Device Package | TO-92-3 |
The UA78L05ACLPME3 from Texas Instruments is a fixed 5V linear regulator delivering up to 100mA. Housed in a TO-92-3 package, it offers a dropout of 1.7V at 40mA and 49dB PSRR at 120Hz. This LDO provides clean, stable power for logic circuits, analog references, and low-power embedded systems. Its through-hole design simplifies prototyping and repair, making it a practical choice for both hobbyist and industrial applications.
- Stable 5V Output: Fixed 5V with tight regulation ensures reliable operation for TTL logic and analog ICs.
- Low Noise Operation: 49dB PSRR at 120Hz attenuates mains ripple, improving audio and measurement accuracy.
- Through-Hole Package: TO-92-3 allows easy breadboarding and manual soldering, reducing development time.
- Proven TI Reliability: Texas Instruments' legacy design guarantees long-term availability and consistent performance.
5V Logic Power for MCU Boards
With a fixed 5V output and 100mA capability, the UA78L05ACLPME3 powers small 8-bit MCUs, sensors, and interface ICs in hobbyist and industrial control boards.
Analog Reference Supply
The 49dB PSRR at 120Hz reduces AC mains hum, making it suitable for op-amp supply rails in audio preamps and instrumentation where clean DC is critical.
Bias Supply for Discrete Circuits
Use it to generate a stable 5V bias for transistor stages, voltage-controlled oscillators, or ADC reference circuits in mixed-signal designs.
Replacing Zener-Resistor Regulators
Compared to crude Zener shunt regulators, this LDO provides better line/load regulation and lower output impedance, improving circuit accuracy.
Through-Hole Prototyping
The TO-92-3 package is breadboard-friendly, enabling quick validation of 5V sub-circuits before committing to SMD layouts.
Low-Cost Consumer Electronics
For simple appliances, toys, or wall-adapter powered devices, this regulator offers a reliable, low-cost 5V rail without complex switching noise.
- Q: What is the output voltage of the UA78L05ACLPME3?
- A: The fixed output voltage is 5V, ideal for 5V logic and analog rails.
- Q: What is the maximum output current?
- A: It can deliver up to 100mA of continuous output current.
- Q: What is the input voltage range?
- A: The input voltage is 5V nominal; for proper regulation, input should be at least 1.7V above output (6.7V min).
- Q: What is the dropout voltage?
- A: Dropout is 1.7V at 40mA load, typical for older bipolar LDOs.
- Q: What package is available?
- A: It comes in a TO-92-3 through-hole package, easy for prototyping.
- Q: Does it have good ripple rejection?
- A: Yes, PSRR is 49dB at 120Hz, filtering mains ripple effectively.
UA78L05ACLPME3.pdf
- Q: What is the output voltage of the UA78L05ACLPME3?
- A: The fixed output voltage is 5V, ideal for 5V logic and analog rails.
- Q: What is the maximum output current?
- A: It can deliver up to 100mA of continuous output current.
- Q: What is the input voltage range?
- A: The input voltage is 5V nominal; for proper regulation, input should be at least 1.7V above output (6.7V min).
- Q: What is the dropout voltage?
- A: Dropout is 1.7V at 40mA load, typical for older bipolar LDOs.
- Q: What package is available?
- A: It comes in a TO-92-3 through-hole package, easy for prototyping.
- Q: Does it have good ripple rejection?
- A: Yes, PSRR is 49dB at 120Hz, filtering mains ripple effectively.
