Overview
The L7920CV is a three-terminal negative voltage regulator from STMicroelectronics, part of the L79 series. This regulator is available in TO-220, TO-220FP, and D²PAK packages, making it versatile for various applications. It provides a fixed output voltage of -20 V and is designed to deliver up to 1.5 A of output current. The L7920CV is particularly useful for local on-card regulation, eliminating distribution problems associated with single-point regulation, and is suitable for split power supplies.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | -19.2 to -20.8 | V |
| Output Current | Up to 1.5 A | A |
| Input Voltage Range | -24 to -35 V | V |
| Line Regulation | 300 mV (VI = -22 to -30 V, TJ = 25 °C) | mV |
| Load Regulation | 300 mV (IO = 5 mA to 1.5 A, TJ = 25 °C) | mV |
| Quiescent Current | 3 mA (TJ = 25 °C) | mA |
| Dropout Voltage | 1.1 V (IO = 1 A, TJ = 25 °C) | V |
| Short Circuit Current | 1.0 A | A |
| Operating Junction Temperature Range | 0 to 125 °C (for AC version), 0 to 150 °C (for C version) | °C |
| Storage Temperature Range | -65 to 150 °C | °C |
Key Features
- Fixed output voltage of -20 V
- Output current up to 1.5 A
- Thermal overload protection
- Short-circuit protection
- Output SOA (Safe Operating Area) protection
- Output voltage tolerance of 4% (C version) or 2% (AC version) at 25 °C
- Available in TO-220, TO-220FP, and D²PAK packages
Applications
- Local on-card regulation to eliminate distribution problems associated with single-point regulation
- Suitable for split power supplies, especially in applications requiring ±20 V or similar configurations
- Use in various electronic systems requiring stable negative voltage supplies
- Can be used with external components to obtain adjustable voltages and currents
Q & A
- What is the output voltage of the L7920CV?
The output voltage of the L7920CV is -20 V.
- What is the maximum output current of the L7920CV?
The maximum output current of the L7920CV is up to 1.5 A.
- What are the package options for the L7920CV?
The L7920CV is available in TO-220, TO-220FP, and D²PAK packages.
- Does the L7920CV have thermal protection?
- What is the quiescent current of the L7920CV?
The quiescent current of the L7920CV is 3 mA at 25 °C.
- What is the dropout voltage of the L7920CV?
The dropout voltage of the L7920CV is 1.1 V at 1 A output current.
- Can the L7920CV be used for adjustable voltage regulation?
- What is the operating junction temperature range for the L7920CV?
The operating junction temperature range for the L7920CV is 0 to 125 °C (for AC version) or 0 to 150 °C (for C version).
- What is the storage temperature range for the L7920CV?
The storage temperature range for the L7920CV is -65 to 150 °C.
- Does the L7920CV have short-circuit protection?
