Overview
The L7905CV-DG is a three-terminal negative voltage regulator from STMicroelectronics, part of the L79 series. This regulator is available in the TO-220 package and is designed to provide a fixed output voltage of -5V. It is particularly suited for applications requiring local on-card regulation and is often used in split power supplies. With adequate heat sinking, the L7905CV-DG can deliver output currents up to 1.5 A, making it versatile for various power management needs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage (VO) | -4.8 to -5.2 | V |
| Output Current (IO) | Up to 1.5 | A |
| Input Voltage (VI) | -35 | V |
| Dropout Voltage (Vd) | 1.4 | V |
| Short Circuit Current (Isc) | 1.8 | A |
| Quiescent Current (Id) | 3 | mA |
| Thermal Resistance Junction-Case (RthJC) | 5 | °C/W |
| Thermal Resistance Junction-Ambient (RthJA) | 50 | °C/W |
| Operating Junction Temperature (TOP) | 0 to 150 | °C |
| Storage Temperature Range (TSTG) | -65 to 150 | °C |
Key Features
- Output current up to 1.5 A
- Fixed output voltage of -5V
- Thermal overload protection
- Short-circuit protection
- Output SOA (Safe Operating Area) protection
- Output tolerance of 4% at 25 °C (C version)
- Available in TO-220 package
Applications
The L7905CV-DG is particularly suited for split power supplies and can be used in various applications requiring local on-card regulation. It is ideal for systems that need a stable negative voltage supply, such as in industrial control systems, medical devices, and other electronic equipment where reliable power management is crucial.
Q & A
- What is the output voltage of the L7905CV-DG?
The output voltage of the L7905CV-DG is -5V.
- What is the maximum output current of the L7905CV-DG?
The maximum output current is up to 1.5 A.
- What is the input voltage range for the L7905CV-DG?
The input voltage range is up to -35 V.
- Does the L7905CV-DG have thermal protection?
Yes, it has thermal overload protection.
- What is the dropout voltage of the L7905CV-DG?
The dropout voltage is 1.4 V.
- What is the quiescent current of the L7905CV-DG?
The quiescent current is 3 mA.
- What are the thermal resistance values for the L7905CV-DG?
The thermal resistance junction-case (RthJC) is 5 °C/W, and the thermal resistance junction-ambient (RthJA) is 50 °C/W.
- What is the operating junction temperature range for the L7905CV-DG?
The operating junction temperature range is 0 to 150 °C.
- What is the storage temperature range for the L7905CV-DG?
The storage temperature range is -65 to 150 °C.
- In what package is the L7905CV-DG available?
The L7905CV-DG is available in the TO-220 package.
