Overview
The PT78ST105V, manufactured by Texas Instruments, is a high-performance linear voltage regulator designed to deliver stable and reliable power in various electronic applications. This product falls under the category of voltage regulators and is particularly suited for industrial, automotive, and consumer electronics. Its market positioning targets engineers and designers seeking a robust solution for power management with minimal external components. The PT78ST105V stands out for its high efficiency, low dropout voltage, and excellent thermal performance, making it a competitive choice in its class.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Output Voltage | 5 | V | Fixed |
| Output Current | 1.5 | A | Maximum |
| Input Voltage Range | 7 to 35 | V | |
| Dropout Voltage | 1.5 | V | At 1.5A |
| Line Regulation | 0.02 | %/V | |
| Load Regulation | 0.1 | % | |
| Operating Temperature Range | -40 to 125 | °C | |
| Package | TO-220 | Through-hole | |
| Protection Features | Overcurrent, Thermal Shutdown |
Key Features
- High efficiency with low dropout voltage, ensuring optimal performance even under heavy loads.
- Fixed 5V output voltage, simplifying design and reducing external component count.
- Robust thermal performance with built-in thermal shutdown protection, enhancing reliability in demanding environments.
- Wide input voltage range (7V to 35V), making it versatile for various applications.
- Overcurrent protection safeguards the regulator and connected components from damage.
Applications
The PT78ST105V is widely used in industrial automation, automotive electronics, and consumer electronics. In industrial settings, it provides stable power for control systems and sensors. In automotive applications, it ensures reliable operation of infotainment systems and onboard electronics. For consumer electronics, it is ideal for powering devices such as routers, set-top boxes, and small appliances. Its robust design and protection features make it suitable for environments with fluctuating power conditions.
Q & A
1. What is the maximum output current of the PT78ST105V?
The maximum output current is 1.5A.
2. What is the input voltage range for this regulator?
The input voltage range is 7V to 35V.
3. Does the PT78ST105V have thermal protection?
Yes, it includes thermal shutdown protection to prevent overheating.
4. What is the dropout voltage at 1.5A?
The dropout voltage is 1.5V at 1.5A.
5. What package does the PT78ST105V come in?
It is available in a TO-220 through-hole package.
6. Is the output voltage fixed or adjustable?
The output voltage is fixed at 5V.
7. Can this regulator be used in automotive applications?
Yes, it is suitable for automotive electronics due to its robust design and wide input voltage range.
8. What is the operating temperature range?
The operating temperature range is -40°C to 125°C.
9. Does the PT78ST105V have overcurrent protection?
Yes, it includes overcurrent protection to safeguard the regulator and connected components.
10. What are typical applications for this voltage regulator?
Typical applications include industrial automation, automotive electronics, and consumer electronics such as routers and set-top boxes.
