Overview
The L7915CV-DG is a negative voltage regulator produced by STMicroelectronics. It is part of the L79 series, which offers a range of fixed output voltages. This specific model provides a fixed output voltage of -15V and is designed to handle high current demands up to 1.5A. The regulator is packaged in a TO-220-3 case, making it suitable for various applications requiring stable negative voltage regulation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer | STMicroelectronics | |
| Part Number | L7915CV-DG | |
| Description | Fixed LDO Voltage Regulator, -35V to -23V, 1.1V Dropout, -15Vout, 1.5Aout, TO-220-3 | |
| Output Voltage | -15V | V |
| Max Output Current | 1.5A | A |
| Input Voltage Range | -35V to -17.5V | V |
| Quiescent Current | 3mA | mA |
| Dropout Voltage | 1.1V @ 1A Typ | V |
| Power Supply Rejection Ratio (PSRR) | 60dB (120Hz) | dB |
| Operating Temperature Range | 0°C to 125°C | °C |
| Package / Case | TO-220-3 | |
| Number of Pins | 3 | |
| Protection Features | Over Temperature, Short Circuit |
Key Features
- Fixed Output Voltage: Provides a stable output voltage of -15V.
- High Current Capability: Can handle output currents up to 1.5A.
- Low Dropout Voltage: Dropout voltage of 1.1V at 1A, ensuring minimal voltage loss.
- Good PSRR: Power Supply Rejection Ratio of 60dB at 120Hz, indicating good noise rejection.
- Protection Features: Includes overtemperature 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.
- Compact Packaging: Available in the TO-220-3 package, which is convenient for through-hole mounting.
Applications
The L7915CV-DG is versatile and can be used in a variety of applications requiring stable negative voltage regulation. Some common applications include:
- Power Supplies: Used in power supply circuits to provide a stable negative voltage output.
- Audio Equipment: Often used in audio equipment to provide the necessary negative voltage for operational amplifiers and other components.
- Industrial Control Systems: Employed in industrial control systems where stable negative voltages are required.
- Medical Devices: Used in medical devices that require precise voltage regulation.
- Automotive Systems: Can be used in automotive systems that need reliable negative voltage regulation.
Q & A
- What is the output voltage of the L7915CV-DG?
The output voltage of the L7915CV-DG is -15V.
- What is the maximum output current of the L7915CV-DG?
The maximum output current is 1.5A.
- What is the input voltage range for the L7915CV-DG?
The input voltage range is from -35V to -17.5V.
- What is the quiescent current of the L7915CV-DG?
The quiescent current is 3mA.
- What is the dropout voltage of the L7915CV-DG?
The dropout voltage is 1.1V at 1A.
- Does the L7915CV-DG have any protection features?
Yes, it includes overtemperature and short-circuit protection.
- What is the operating temperature range of the L7915CV-DG?
The operating temperature range is from 0°C to 125°C.
- In what package is the L7915CV-DG available?
The L7915CV-DG is available in the TO-220-3 package.
- What is the Power Supply Rejection Ratio (PSRR) of the L7915CV-DG?
The PSRR is 60dB at 120Hz.
- Can the L7915CV-DG be used in automotive systems?
Yes, it can be used in automotive systems that require reliable negative voltage regulation.
