Overview
The STMicroelectronics L7905ACV-DG is a negative fixed linear voltage regulator IC designed for general-purpose applications. This device is part of the L79 series, which offers reliable and efficient voltage regulation. The L7905ACV-DG is particularly suited for applications requiring a stable negative voltage supply, such as in split power supplies and local on-card regulation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | -4.9 to -5.1 | V |
| Output Current | Up to 1.5 A | A |
| Input Voltage Range | -8 to -20 V | V |
| Dropout Voltage | 1.4 V | V |
| Quiescent Current | 3 mA (typical) | mA |
| Thermal Overload Protection | Yes | |
| Short-Circuit Protection | Yes | |
| Output Voltage Tolerance | 2% at 25°C | % |
| Operating Junction Temperature Range | 0 to 125°C | °C |
| Package Type | TO-220 |
Key Features
- Fixed negative output voltage of -5V with a tolerance of 2% at 25°C.
- High output current capability up to 1.5 A.
- Thermal overload protection and short-circuit protection.
- Output voltage drift of -0.4 mV/°C.
- Low quiescent current of 3 mA (typical).
- Supply voltage rejection ratio of 54 to 60 dB.
- Available in TO-220, TO-220FP, and D²PAK packages.
Applications
- Suitable for split power supplies, providing both positive and negative voltage rails.
- Local on-card regulation to eliminate distribution problems associated with single point regulation.
- General-purpose applications requiring a stable negative voltage supply.
- Circuit designs where adjustable voltages and currents are needed using external components.
Q & A
- What is the output voltage of the L7905ACV-DG?
The output voltage is -5V with a tolerance of 2% at 25°C. - What is the maximum output current of the L7905ACV-DG?
The maximum output current is up to 1.5 A. - What are the input voltage range and dropout voltage for the L7905ACV-DG?
The input voltage range is -8 to -20 V, and the dropout voltage is 1.4 V. - Does the L7905ACV-DG have thermal overload protection?
Yes, it has thermal overload protection and short-circuit protection. - What is the quiescent current of the L7905ACV-DG?
The quiescent current is 3 mA (typical). - In what packages is the L7905ACV-DG available?
The device is available in TO-220, TO-220FP, and D²PAK packages. - What is the operating junction temperature range for the L7905ACV-DG?
The operating junction temperature range is 0 to 125°C. - Can the L7905ACV-DG be used for adjustable voltage regulation?
Yes, it can be used with external components to obtain adjustable voltages and currents. - What is the supply voltage rejection ratio of the L7905ACV-DG?
The supply voltage rejection ratio is 54 to 60 dB. - What are some common applications for the L7905ACV-DG?
Common applications include split power supplies, local on-card regulation, and general-purpose applications requiring a stable negative voltage supply.
