TAEJIN LM78L05A
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.18 | $0.18 |
| 15+ | $0.04 | $0.60 |
| 25+ | $0.04 | $1.00 |
| 50+ | $0.03 | $1.50 |
| 100+ | $0.03 | $3.00 |
| N+ | $0.01 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | TAEJIN |
| Product Series | |
| Packaging | 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) | 6 mA |
| Current - Supply (Max) | - |
| PSRR | 49dB (120Hz) |
| Control Features | - |
| Protection Features | Over Current, Over Temperature, Short Circuit |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Grade | - |
| Qualification | - |
| Mounting Type | Through Hole |
| Package / Case | TO-226-3, TO-92-3 (TO-226AA) |
| Supplier Device Package | TO-92 |
| ROHS |
The LM78L05A from TAEJIN is a fixed positive linear regulator delivering 5V at up to 100mA. In a TO-92 package, it offers a dropout voltage of 1.7V at 40mA and a quiescent current of 6mA. With a PSRR of 49dB at 120Hz, it ensures clean, regulated 5V power for digital logic, analog sensors, and consumer electronics. Its simple three-pin configuration makes it easy to integrate.
- Fixed 5V Output: Universal voltage for digital and analog circuits.
- 100mA Current Rating: Handles typical low-power loads.
- TO-92 Package: Small footprint, compatible with standard breadboards.
- Low Quiescent Current (6mA): Efficient for battery-operated devices.
Digital Logic Power
The LM78L05A provides a stable 5V rail for TTL and CMOS logic ICs, ensuring reliable operation in digital circuits like counters, decoders, and microcontrollers.
Analog Sensor Excitation
Bridge-type sensors (strain gauges, RTDs) require a precise 5V excitation. The LM78L05A delivers a low-noise 5V supply, improving measurement accuracy in weigh scales and temperature monitors.
Consumer Electronics
From remote controls to small appliances, the LM78L05A powers 5V logic and display drivers, offering a cost-effective regulation solution for high-volume products.
Automotive Aftermarket
In car audio and accessory circuits, the LM78L05A can regulate vehicle battery voltage down to 5V for USB chargers or control modules, withstanding the automotive environment.
Prototyping and Education
For hobbyists and students, the LM78L05A in TO-92 is ideal for breadboard projects requiring a 5V supply from a 9V battery or bench supply.
Industrial Control Panels
The LM78L05A powers PLC I/O modules and indicator LEDs, providing a reliable 5V reference in noisy industrial environments.
- Q: What is the output voltage of the LM78L05A?
- A: It provides a fixed positive output voltage of 5V.
- Q: What is the maximum output current?
- A: The maximum output current is 100mA.
- Q: What is the input voltage requirement?
- A: The input voltage is 5V (positive supply).
- Q: What is the dropout voltage?
- A: The dropout voltage is 1.7V at a 40mA load.
- Q: What is the quiescent current?
- A: The quiescent current is 6 mA.
- Q: What package is available?
- A: It is available in a TO-92 package.
- Q: What is the output voltage of the LM78L05A?
- A: It provides a fixed positive output voltage of 5V.
- Q: What is the maximum output current?
- A: The maximum output current is 100mA.
- Q: What is the input voltage requirement?
- A: The input voltage is 5V (positive supply).
- Q: What is the dropout voltage?
- A: The dropout voltage is 1.7V at a 40mA load.
- Q: What is the quiescent current?
- A: The quiescent current is 6 mA.
- Q: What package is available?
- A: It is available in a TO-92 package.

LM78L05A.pdf