Overview
The L7908CV is a linear voltage regulator produced by STMicroelectronics. It is part of the L79 series, which offers three-terminal negative voltage regulators. This component is designed to provide a stable negative output voltage, making it suitable for various applications requiring reliable voltage regulation.
The L7908CV is packaged in a TO-220-3 package, which is a common and versatile package type for power management ICs. It is RoHS compliant, ensuring it meets environmental standards for lead-free electronics.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Manufacturer | STMicroelectronics | - |
| Part Number | L7908CV | - |
| Package | TO-220-3 | - |
| Output Configuration | Negative | - |
| Output Type | Fixed | - |
| Number of Regulators | 1 | - |
| Voltage - Input (Max) | -35V | - |
| Voltage - Output (Fixed) | -8V | - |
| Voltage Dropout (Max) | 1.1V @ 1A (Typ) | - |
| Current - Output | 1.5A | - |
| Current - Quiescent (Iq) | 3mA (Max) | - |
| PSRR | 60dB (120Hz) | - |
| Protection Features | Over Temperature, Short Circuit | - |
| Operating Temperature | 0°C ~ 125°C | - |
| Mounting Type | Through Hole | - |
Key Features
- Fixed Negative Output Voltage: Provides a stable -8V output voltage.
- High Current Capability: Can supply up to 1.5A of output current.
- Low Dropout Voltage: Features a dropout voltage of 1.1V at 1A, ensuring efficient voltage regulation.
- High PSRR: Offers a power supply rejection ratio (PSRR) of 60dB at 120Hz, enhancing noise immunity.
- Protection Features: Includes over-temperature and short-circuit protection to ensure device reliability.
- Wide Operating Temperature Range: Operates from 0°C to 125°C, making it suitable for various environmental conditions.
Applications
- Power Supplies: Used in power supply units requiring stable negative voltage outputs.
- Industrial Control Systems: Suitable for industrial control systems that need reliable voltage regulation.
- Automotive Electronics: Can be used in automotive systems where stable negative voltages are required.
- Medical Devices: Applicable in medical devices that demand precise voltage regulation.
- Telecommunications: Used in telecommunications equipment to provide stable negative voltage supplies.
Q & A
- What is the output voltage of the L7908CV?
The L7908CV provides a fixed output voltage of -8V.
- What is the maximum output current of the L7908CV?
The maximum output current is 1.5A.
- What is the dropout voltage of the L7908CV at 1A?
The dropout voltage at 1A is 1.1V (typical).
- What is the PSRR of the L7908CV at 120Hz?
The PSRR at 120Hz is 60dB.
- Does the L7908CV have built-in protection features?
Yes, it includes over-temperature and short-circuit protection.
- What is the operating temperature range of the L7908CV?
The operating temperature range is from 0°C to 125°C.
- What package type is the L7908CV available in?
The L7908CV is available in the TO-220-3 package.
- Is the L7908CV RoHS compliant?
Yes, the L7908CV is RoHS compliant.
- What are some common applications of the L7908CV?
Common applications include power supplies, industrial control systems, automotive electronics, medical devices, and telecommunications equipment.
- What is the quiescent current of the L7908CV?
The quiescent current is up to 3mA.
