Texas Instruments UA78L05CPKG3
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.31 | $0.31 |
| 15+ | $0.30 | $4.50 |
| 25+ | $0.30 | $7.50 |
| 50+ | $0.28 | $14.00 |
| 100+ | $0.25 | $25.00 |
| 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 | TO-243AA |
| Supplier Device Package | SOT-89-3 |
| ROHS |  |
The UA78L05CPKG3 from Texas Instruments is a fixed 5V linear voltage regulator delivering up to 100mA. Housed in a compact SOT-89-3 package, it offers a dropout voltage of 1.7V at 40mA and a PSRR of 49dB at 120Hz. This regulator is ideal for powering digital logic and sensors in space-constrained applications.
- Compact SOT-89 Package: Small footprint saves PCB space, ideal for portable and wearable devices.
- Low Dropout: 1.7V at 40mA enables efficient operation from lower input voltages.
- Good Ripple Rejection: 49dB PSRR at 120Hz filters mains noise for sensitive circuits.
- Reliable Protection: Internal current limiting and thermal shutdown enhance system safety.
Digital Logic Power
Use the UA78L05CPKG3 to power 5V logic ICs, microcontrollers, and FPGA cores. Its 100mA output is sufficient for small digital systems, and the 49dB PSRR ensures clean operation.
Sensor Modules
For temperature, pressure, and humidity sensors, this regulator provides a stable 5V reference, improving measurement accuracy in IoT devices.
Battery-Powered Wearables
In wearable devices, the UA78L05CPKG3's low dropout (1.7V) allows operation from a 6.7V battery, maximizing runtime. The SOT-89 package is compact for space-constrained designs.
Automotive ECUs
For engine control units and body control modules, this regulator supplies a stable 5V rail for sensors and microcontrollers, withstanding automotive voltage transients.
Portable Test Instruments
In handheld multimeters and oscilloscopes, the UA78L05CPKG3 ensures a precise 5V reference for analog-to-digital converters, enhancing measurement reliability.
Communication Interfaces
For RS-232 and CAN transceivers, this regulator provides a clean 5V supply, reducing bit errors and improving communication integrity.
- Q: What is the output voltage of the UA78L05CPKG3?
- A: It provides a fixed 5V output.
- 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 is 5V (typical, with headroom required above dropout).
- Q: What is the dropout voltage?
- A: The dropout voltage is 1.7V at 40mA.
- Q: What is the PSRR?
- A: The PSRR is 49dB at 120Hz.
- Q: What package is available?
- A: It comes in a SOT-89-3 package.
UA78L05CPKG3.pdf
- Q: What is the output voltage of the UA78L05CPKG3?
- A: It provides a fixed 5V output.
- 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 is 5V (typical, with headroom required above dropout).
- Q: What is the dropout voltage?
- A: The dropout voltage is 1.7V at 40mA.
- Q: What is the PSRR?
- A: The PSRR is 49dB at 120Hz.
- Q: What package is available?
- A: It comes in a SOT-89-3 package.
