Texas Instruments UA78L05ACPKM3
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.29 | $0.29 |
| 15+ | $0.28 | $4.20 |
| 25+ | $0.27 | $6.75 |
| 50+ | $0.26 | $13.00 |
| 100+ | $0.23 | $23.00 |
| N+ | $0.05 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | UA78L |
| Packaging | Bulk | |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 35V |
| 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 | 55dB ~ 49dB (120Hz) |
| Control Features | - |
| Protection Features | Over Current, Over Temperature, Short Circuit |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | TO-243AA |
| Supplier Device Package | SOT-89-3 |
| ROHS |  |
The UA78L05ACPKM3 is a fixed 5V linear regulator from Texas Instruments, delivering up to 100mA. It features a dropout voltage of 1.7V at 40mA and a quiescent current of 6mA. Housed in a SOT-89-3 package, it is a reliable choice for moderate-current 5V applications.
- Proven Reliability: Based on the industry-standard 78L05 architecture, trusted for decades in industrial designs.
- Thermal Efficiency: SOT-89-3 package dissipates heat effectively for 100mA loads.
- Mains Noise Rejection: 55dB PSRR at 120Hz filters rectifier ripple in AC-powered devices.
- Wide Input Range: Accepts up to 20V input, providing design flexibility.
Legacy 5V Logic Circuits
Provides a stable 5V rail for TTL logic ICs in industrial control panels, with 100mA sufficient for small logic families.
Microcontroller Analog Reference
The 5V output with 55dB PSRR at 120Hz is suitable for powering ADC reference circuits in 8-bit MCU designs.
Relay Driver Supply
Can power low-current relay coils (up to 100mA) in automation systems, with the SOT-89 package handling moderate heat.
Sensor Power in HVAC
Provides clean 5V for temperature and pressure sensors in building automation, rejecting 120Hz mains noise.
Battery Charger Control
Regulates 5V for charger ICs in simple power banks, with 1.7V dropout allowing operation from 6.7V input.
Audio Preamplifier Supply
The 49dB PSRR at 120Hz reduces hum in audio preamp circuits powered from unregulated rectifiers.
- Q: What is the output voltage of the UA78L05ACPKM3?
- A: The fixed output voltage is 5V.
- Q: What is the maximum output current?
- A: It can deliver up to 100mA.
- Q: What is the input voltage range?
- A: The input voltage range is 7V to 20V (typical).
- Q: What is the dropout voltage?
- A: Dropout is typically 1.7V at 40mA load.
- Q: What is the quiescent current?
- A: Quiescent current is typically 6mA.
- Q: What package is available?
- A: It comes in a SOT-89-3 package.
UA78L05ACPKM3.pdf
- Q: What is the output voltage of the UA78L05ACPKM3?
- A: The fixed output voltage is 5V.
- Q: What is the maximum output current?
- A: It can deliver up to 100mA.
- Q: What is the input voltage range?
- A: The input voltage range is 7V to 20V (typical).
- Q: What is the dropout voltage?
- A: Dropout is typically 1.7V at 40mA load.
- Q: What is the quiescent current?
- A: Quiescent current is typically 6mA.
- Q: What package is available?
- A: It comes in a SOT-89-3 package.
