Overview
The L7805ABV-DG is a three-terminal positive voltage regulator from STMicroelectronics, part of the L78 series. This regulator is available in various packages, including TO-220, TO-220FP, D²PAK, and DPAK, and is designed to provide stable output voltages in a wide range of applications. The L7805ABV-DG specifically provides a fixed output voltage of 5V, making it suitable for systems requiring reliable and regulated power supply.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 4.9 to 5.1 | V |
| Output Current | Up to 1.5 A | A |
| Input Voltage | Up to 35 V (for VO = 5 to 18 V), Up to 40 V (for VO = 20, 24 V) | V |
| Thermal Resistance Junction-Case | 3 to 5 °C/W (depending on package) | °C/W |
| Thermal Resistance Junction-Ambient | 50 to 100 °C/W (depending on package) | °C/W |
| Operating Junction Temperature | -40 to 125 °C | °C |
| Dropout Voltage | 2 V | V |
| Output Noise Voltage | 10 µV/VO | µV/VO |
| Output Resistance | 17 mΩ | mΩ |
| Short Circuit Current | 0.2 A | A |
| Short Circuit Peak Current | 2.2 A | A |
Key Features
- Internal current limiting, thermal shut-down, and safe area protection, making it essentially indestructible.
- Thermal overload protection and short circuit protection.
- Output transition SOA protection.
- 2% output voltage tolerance (A version).
- Guaranteed operation in an extended temperature range (A version).
- Can be used with external components to obtain adjustable voltage and currents.
- High ripple rejection and low dropout voltage.
Applications
The L7805ABV-DG is versatile and can be used in a wide range of applications, including:
- Local on-card regulation to eliminate distribution problems associated with single point regulation.
- Power supplies for electronic devices requiring a stable 5V output.
- Industrial control systems.
- Consumer electronics.
- Automotive systems.
Q & A
- What is the output voltage of the L7805ABV-DG?
The output voltage of the L7805ABV-DG is 5V with a tolerance of ±1% (4.9V to 5.1V) at 25°C. - What is the maximum output current of the L7805ABV-DG?
The maximum output current is up to 1.5 A. - What are the available packages for the L7805ABV-DG?
The L7805ABV-DG is available in TO-220, TO-220FP, D²PAK, and DPAK packages. - What is the thermal resistance junction-case for the TO-220 package?
The thermal resistance junction-case for the TO-220 package is 5 °C/W. - Does the L7805ABV-DG have built-in protection features?
Yes, it includes internal current limiting, thermal shut-down, and safe area protection. - What is the dropout voltage of the L7805ABV-DG?
The dropout voltage is 2 V. - Can the L7805ABV-DG be used for adjustable voltage regulation?
Yes, it can be used with external components to obtain adjustable voltage and currents. - What is the operating junction temperature range for the L7805ABV-DG?
The operating junction temperature range is -40 to 125 °C. - What is the minimum load current required for regulation?
The minimum load current for regulation is 5 mA. - What is the ripple rejection of the L7805ABV-DG?
The ripple rejection is typically around 68 dB at 120 Hz with an output current of 500 mA.
