Overview
The L78M15ACDT is a precision 500 mA three-terminal positive voltage regulator from STMicroelectronics. It is part of the L78MxxA series, which is known for its reliability and versatility in various applications. This regulator is available in TO-220 and DPAK packages, making it suitable for a wide range of electronic designs. The L78M15ACDT provides a fixed output voltage of 15 V and is designed with internal current limiting, thermal shutdown, and safe area protection, ensuring robust operation under different conditions.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 14.7 to 15.3 | V |
| Output Current | Up to 500 mA | mA |
| Input Voltage | Up to 35 V (for VO = 5 to 18 V), Up to 40 V (for VO = 20, 24 V) | V |
| Thermal Resistance Junction-Case | 5 °C/W (TO-220), 8 °C/W (DPAK) | °C/W |
| Thermal Resistance Junction-Ambient | 50 °C/W (TO-220), 100 °C/W (DPAK) | °C/W |
| Operating Junction Temperature | 0 to 125 °C | °C |
| Storage Temperature Range | -65 to 150 °C | °C |
| Line Regulation | 100 mV (VI = 17.5 to 30 V, IO = 200 mA) | mV |
| Load Regulation | 300 mV (IO = 5 to 500 mA) | mV |
| Quiescent Current | 6 mA | mA |
| Dropout Voltage | 2 V | V |
Key Features
- Output current up to 500 mA
- Fixed output voltage of 15 V with ±2% tolerance
- Thermal overload protection
- Short circuit protection
- Output transition SOA protection
- Guaranteed operation in extended temperature range
- Available in TO-220 and DPAK packages
Applications
The L78M15ACDT is suitable for a variety of applications, including:
- Communications equipment
- Computers and peripherals
- Industrial control systems
- Local on-card regulation to eliminate distribution problems associated with single point regulation
Q & A
- What is the output voltage of the L78M15ACDT? The output voltage of the L78M15ACDT is 15 V with a tolerance of ±2%.
- What is the maximum output current of the L78M15ACDT? The maximum output current is up to 500 mA.
- What types of protection does the L78M15ACDT have? It has thermal overload protection, short circuit protection, and output transition SOA protection.
- In what packages is the L78M15ACDT available? It is available in TO-220 and DPAK packages.
- What is the operating junction temperature range for the L78M15ACDT? The operating junction temperature range is 0 to 125 °C.
- What is the storage temperature range for the L78M15ACDT? The storage temperature range is -65 to 150 °C.
- How does the L78M15ACDT handle line and load regulation? It has a line regulation of 100 mV (VI = 17.5 to 30 V, IO = 200 mA) and a load regulation of 300 mV (IO = 5 to 500 mA).
- What is the quiescent current of the L78M15ACDT? The quiescent current is 6 mA.
- What is the dropout voltage of the L78M15ACDT? The dropout voltage is 2 V.
- Can the L78M15ACDT be used in adjustable voltage configurations? Yes, it can be used with external components to obtain adjustable voltage and currents.
