Overview
The L7906CV is a three-terminal negative voltage regulator produced by STMicroelectronics. It is part of the L79 series, which is designed to provide fixed negative output voltages. This regulator is available in several package types, including TO-220, TO-220FP, and D²PAK, making it versatile for various applications. The L7906CV specifically provides a fixed output voltage of -6V and is capable of delivering up to 1.5 A of output current, provided adequate heat sinking is available. This device is particularly useful for local on-card regulation, eliminating issues associated with single-point regulation, and is suitable for split power supply configurations.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | -6 V | V |
| Output Current | Up to 1.5 A | A |
| Input Voltage | -10 to -20 V | V |
| Output Tolerance | 2% (AC version) or 4% (C version) at 25 °C | % |
| Dropout Voltage | 1.4 V at IO = 1 A, TJ = 25 °C | V |
| Short Circuit Current | 1.8 A | A |
| Quiescent Current | 3 mA at TJ = 25 °C | mA |
| Thermal Resistance Junction-Case | 3 °C/W (D²PAK), 5 °C/W (TO-220 and TO-220FP) | °C/W |
| Operating Junction Temperature | 0 to 125 °C (AC version), 0 to 150 °C (C version) | °C |
Key Features
- Fixed negative output voltage of -6V
- Output current up to 1.5 A with adequate heat sinking
- Available in TO-220, TO-220FP, and D²PAK packages
- Thermal overload protection
- Short-circuit protection
- Output SOA (Safe Operating Area) protection
- Low dropout voltage
- Low quiescent current
- High supply voltage rejection ratio (SVR)
Applications
The L7906CV is suitable for a wide range of applications, including:
- Local on-card regulation to eliminate single-point regulation issues
- Split power supply configurations (e.g., ±15 V, ±12 V, ±8 V)
- Power supplies requiring negative voltage regulation
- Industrial and consumer electronics where stable negative voltages are needed
- Automotive and aerospace applications requiring robust voltage regulation
Q & A
- What is the output voltage of the L7906CV?
The output voltage of the L7906CV is -6V.
- What is the maximum output current of the L7906CV?
The maximum output current is up to 1.5 A, provided adequate heat sinking is available.
- In what packages is the L7906CV available?
The L7906CV is available in TO-220, TO-220FP, and D²PAK packages.
- What are the key protection features of the L7906CV?
The key protection features include thermal overload protection, short-circuit protection, and output SOA protection.
- What is the typical quiescent current of the L7906CV?
The typical quiescent current is 3 mA at 25 °C.
- What is the dropout voltage of the L7906CV?
The dropout voltage is 1.4 V at IO = 1 A and TJ = 25 °C.
- What is the operating junction temperature range for the L7906CV?
The operating junction temperature range is 0 to 125 °C for the AC version and 0 to 150 °C for the C version.
- How does the L7906CV help in power supply designs?
The L7906CV helps by providing local on-card regulation, which eliminates issues associated with single-point regulation, and is suitable for split power supply configurations.
- What types of applications benefit from using the L7906CV?
Applications that require stable negative voltages, such as industrial and consumer electronics, automotive, and aerospace, benefit from using the L7906CV.
- What capacitors are recommended for stability with the L7906CV?
Solid tantalum capacitors are recommended for stability. If aluminum electrolytic capacitors are used, at least ten times the value should be selected.
