Overview
The L7809ABV-DG is a three-terminal positive voltage regulator from STMicroelectronics, part of the L78 series. This regulator is available in the TO-220 package and is designed to provide a fixed output voltage of 9 volts. It is suitable for a wide range of applications due to its robust features and reliability. The L7809ABV-DG can deliver up to 1.5 A of output current and includes internal current limiting, thermal shut-down, and safe area protection, making it highly durable. It is particularly useful for local on-card regulation, eliminating issues associated with single point regulation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 9 | V |
| Output Current | Up to 1.5 A | A |
| Input Voltage (for VO= 9 V) | Up to 35 V | V |
| Operating Junction Temperature | -40 to 125 °C | °C |
| Thermal Resistance (Junction-Case) | 5 °C/W | °C/W |
| Thermal Resistance (Junction-Ambient) | 50 °C/W | °C/W |
| Output Voltage Tolerance | ±2% (A version) | % |
| Dropout Voltage | 2 V at IO = 1 A | V |
| Minimum Load Current for Regulation | 5 mA | mA |
Key Features
- Output current up to 1.5 A
- Fixed output voltage of 9 volts
- Internal current limiting and thermal shut-down
- Safe area protection
- Output transition SOA protection
- 2% output voltage tolerance (A version)
- Guaranteed in extended temperature range (A version)
- Available in TO-220 package
Applications
The L7809ABV-DG is recommended for use in various applications, including:
- Communications equipment
- Computers and peripherals
- Industrial control systems
- Power supplies and voltage regulators
Q & A
- What is the output voltage of the L7809ABV-DG?
The output voltage of the L7809ABV-DG is 9 volts. - What is the maximum output current of the L7809ABV-DG?
The maximum output current is up to 1.5 A. - What are the key protection features of the L7809ABV-DG?
The key protection features include internal current limiting, thermal shut-down, and safe area protection. - What is the operating junction temperature range for the L7809ABV-DG?
The operating junction temperature range is -40 to 125 °C. - What is the minimum load current required for regulation?
The minimum load current required for regulation is 5 mA. - What is the dropout voltage of the L7809ABV-DG?
The dropout voltage is 2 V at an output current of 1 A. - In what package is the L7809ABV-DG available?
The L7809ABV-DG is available in the TO-220 package. - What are some typical applications for the L7809ABV-DG?
Typical applications include communications equipment, computers and peripherals, and industrial control systems. - Does the L7809ABV-DG have thermal protection?
Yes, it includes thermal shut-down protection. - What is the thermal resistance (junction-ambient) of the L7809ABV-DG in the TO-220 package?
The thermal resistance (junction-ambient) is 50 °C/W.
