Overview
The L78M08CV-DG is a three-terminal positive voltage regulator from STMicroelectronics, part of the L78M series. This regulator is designed to provide a fixed output voltage of 8 volts and is available in various packages including TO-220, TO-220FP, DPAK, and IPAK. It is capable of delivering up to 0.5 A of output current, making it suitable for a wide range of applications requiring stable voltage regulation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage (VO) | 7.7 to 8.3 | V |
| Input Voltage (VI) | Up to 35 V for VO = 5 to 18 V, up to 40 V for VO = 20, 24 V | V |
| Output Current (IO) | Internally limited, up to 500 mA | mA |
| Line Regulation | 100 mV (VI = 10.5 to 25 V, IO = 200 mA) | mV |
| Load Regulation | 160 mV (IO = 5 to 500 mA, TJ = 25 °C) | mV |
| Quiescent Current | 6 mA | mA |
| Dropout Voltage | 2 V | V |
| Short Circuit Current | 250 mA (VI = 35 V) | mA |
| Thermal Resistance Junction-Case | 5 °C/W (TO-220, TO-220FP), 8 °C/W (DPAK, IPAK) | °C/W |
| Thermal Resistance Junction-Ambient | 50 °C/W (TO-220), 60 °C/W (TO-220FP), 100 °C/W (DPAK, IPAK) | °C/W |
| Operating Junction Temperature Range | -40 to 125 °C (AB), 0 to 125 °C (AC) | °C |
Key Features
- Fixed output voltage of 8 volts.
- High current capability up to 0.5 A.
- Available in multiple packages: TO-220, TO-220FP, DPAK, and IPAK.
- Internal current limiting and thermal shutdown for protection.
- Low dropout voltage of 2 V.
- Good line and load regulation.
- Low quiescent current of 6 mA.
Applications
The L78M08CV-DG is suitable for various applications requiring stable voltage regulation, such as:
- Power supplies for electronic devices.
- Voltage regulators in industrial control systems.
- Automotive electronics.
- Consumer electronics.
- Medical devices.
Q & A
- What is the output voltage of the L78M08CV-DG? The output voltage is 8 volts.
- What is the maximum output current of the L78M08CV-DG? The maximum output current is internally limited, but it can deliver up to 500 mA.
- What are the available packages for the L78M08CV-DG? The regulator is available in TO-220, TO-220FP, DPAK, and IPAK packages.
- What is the dropout voltage of the L78M08CV-DG? The dropout voltage is 2 V.
- What is the quiescent current of the L78M08CV-DG? The quiescent current is 6 mA.
- What is the operating junction temperature range for the L78M08CV-DG? The operating junction temperature range is -40 to 125 °C for the AB version and 0 to 125 °C for the AC version.
- Does the L78M08CV-DG have internal protection features? Yes, it has internal current limiting and thermal shutdown for protection.
- What is the line regulation of the L78M08CV-DG? The line regulation is 100 mV (VI = 10.5 to 25 V, IO = 200 mA).
- What is the load regulation of the L78M08CV-DG? The load regulation is 160 mV (IO = 5 to 500 mA, TJ = 25 °C).
- What are some common applications of the L78M08CV-DG? It is commonly used in power supplies, industrial control systems, automotive electronics, consumer electronics, and medical devices.
