Overview
The L7912ACV is a three-terminal negative voltage regulator produced by STMicroelectronics. It is part of the L79xxAC series, which is designed to provide reliable and stable negative voltage regulation. This regulator is available in the TO-220 and D²PAK packages and offers a fixed output voltage of -12V. The L7912ACV is particularly suited for applications requiring local on-card regulation, eliminating distribution problems associated with single point regulation. It is also compatible with split power supplies, similar to the L78 positive standard series.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage (Max) | -35 | V |
| Output Voltage (Fixed) | -12 | V |
| Dropout Voltage (Max) | 1.1 | V |
| Output Current (Max) | 1.5 | A |
| Tolerance | ±2% | |
| Operating Temperature Range | 0°C to 125°C | |
| Regulator Topology | Fixed | |
| Quiescent Current | 3mA | |
| No. of Outputs | Single | |
| Output Noise | 200µV | |
| Load Regulation | 240mV | |
| Line Regulation | 240mV | |
| Package Style | TO-220-3 (TO-220AB) | |
| Mounting Method | Flange Mount |
Key Features
- Output current up to 1.5 A
- Fixed output voltage of -12V
- Thermal overload protection
- Short-circuit protection
- Output transition SOA (Safe Operating Area) protection
- Output tolerance of ±2% at 25°C (AC version)
Applications
The L7912ACV is suitable for various power management applications, including:
- Local on-card regulation to eliminate distribution problems associated with single point regulation
- SPLIT power supplies, particularly when used in conjunction with the L78 positive standard series
- Industrial and commercial power supply systems requiring stable negative voltage regulation
Q & A
- What is the maximum output current of the L7912ACV?
The maximum output current of the L7912ACV is 1.5 A.
- What is the fixed output voltage of the L7912ACV?
The fixed output voltage of the L7912ACV is -12V.
- What type of protection does the L7912ACV offer?
The L7912ACV offers thermal overload protection, short-circuit protection, and output transition SOA protection.
- What is the operating temperature range of the L7912ACV?
The operating temperature range of the L7912ACV is from 0°C to 125°C.
- What is the quiescent current of the L7912ACV?
The quiescent current of the L7912ACV is 3mA.
- What is the output noise of the L7912ACV?
The output noise of the L7912ACV is 200µV.
- What is the load regulation of the L7912ACV?
The load regulation of the L7912ACV is 240mV.
- What is the line regulation of the L7912ACV?
The line regulation of the L7912ACV is 240mV.
- In what package styles is the L7912ACV available?
The L7912ACV is available in TO-220 and D²PAK packages.
- What is the mounting method for the L7912ACV?
The mounting method for the L7912ACV is flange mount.
