Texas Instruments UA78L05ACPKG3
| 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 | |
| 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 UA78L05ACPKG3 is a fixed 5V linear voltage regulator from Texas Instruments, delivering up to 100mA of output current. Housed in a compact SOT-89-3 package, it offers a dropout voltage of just 1.7V at 40mA, making it suitable for 7V to 20V input rails. With built-in current limiting and thermal shutdown, it provides reliable, low-noise power for a wide range of embedded and industrial applications.
- Stable 5V Output: Fixed 5V regulation with ±5% accuracy ensures reliable operation for logic and analog circuits.
- Low Dropout (1.7V @ 40mA): Operates efficiently with modest headroom, reducing power dissipation in battery systems.
- Compact SOT-89-3 Package: Small footprint saves PCB space while allowing up to 100mA load.
- Built-in Protection: Thermal shutdown and short-circuit current limiting safeguard the regulator and downstream components.
5V Digital Logic Power
Provides a clean, regulated 5V rail for microcontrollers, sensors, and logic ICs up to 100mA, with 49dB PSRR at 120Hz to reject mains ripple.
Battery-Powered Instruments
Low quiescent current and stable output extend battery life in portable meters and handheld devices where 5V is needed from a 9V or 12V battery.
Industrial Sensor Interfaces
Regulates noisy industrial supply rails down to 5V for analog front-ends, ensuring consistent sensor readings with low output noise.
Audio Preamplifier Supply
Its 49dB PSRR at 120Hz reduces hum from rectified AC, making it suitable for low-power audio preamp stages.
Automotive ECU Subsystems
With thermal shutdown and current limiting, it safely powers small 5V loads in engine control units from a 12V vehicle bus.
Reference Voltage for ADCs
Provides a stable 5V reference for low-power analog-to-digital converters, improving conversion accuracy in measurement systems.
- Q: What is the output voltage of the UA78L05ACPKG3?
- 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 must be at least 1.7V above the output (dropout) and within the absolute maximum ratings; typically 7V to 20V is safe for 5V out.
- Q: What is the dropout voltage?
- A: Dropout is 1.7V at 40mA load, meaning input must be ≥6.7V for regulation at that current.
- Q: What is the package type?
- A: It comes in a SOT-89-3 surface-mount package.
- Q: Does it include short-circuit protection?
- A: Yes, internal current limiting and thermal shutdown are built in.
UA78L05ACPKG3.pdf
- Q: What is the output voltage of the UA78L05ACPKG3?
- 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 must be at least 1.7V above the output (dropout) and within the absolute maximum ratings; typically 7V to 20V is safe for 5V out.
- Q: What is the dropout voltage?
- A: Dropout is 1.7V at 40mA load, meaning input must be ≥6.7V for regulation at that current.
- Q: What is the package type?
- A: It comes in a SOT-89-3 surface-mount package.
- Q: Does it include short-circuit protection?
- A: Yes, internal current limiting and thermal shutdown are built in.
