Overview
The L78M15CV is a precision 500 mA three-terminal positive voltage regulator from STMicroelectronics. This device is part of the L78M series, which is available in various packages including TO-220, TO-220FP, DPAK, and IPAK. The L78M15CV is specifically designed to provide a fixed output voltage of 15 V, making it suitable for a wide range of applications requiring local on-card regulation.
These regulators are known for their robustness, featuring internal current limiting, thermal shutdown, and safe area protection, which makes them essentially indestructible if adequate heat sinking is provided. They can deliver over 0.5 A of output current and are designed to eliminate distribution problems associated with single point regulation.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Output Voltage (VO) | 14.4 | 15 | 15.6 | V |
| Output Current (IO) | - | - | 500 | mA |
| Line Regulation (∆VO) | - | - | 100 mV | - |
| Load Regulation (∆VO) | - | - | 300 mV | - |
| Quiescent Current (Id) | - | 6 | - | mA |
| Dropout Voltage (Vd) | - | - | 2 | V |
| Short Circuit Current (Isc) | - | - | 250 | mA |
| Operating Junction Temperature (TJ) | 0 | - | 125 | °C |
| Thermal Resistance Junction-Case (RthJC) | - | - | 8 | °C/W |
| Thermal Resistance Junction-Ambient (RthJA) | - | - | 100 | °C/W |
Key Features
- Fixed output voltage of 15 V with a tolerance of 4% (C version).
- Output current up to 500 mA.
- Internal current limiting, thermal shutdown, and safe area protection.
- Low dropout voltage of 2 V.
- High ripple rejection and low output noise voltage.
- Available in TO-220, TO-220FP, DPAK, and IPAK packages.
- Guaranteed operation over an extended temperature range (0 to 125°C for C version).
Applications
- Local on-card regulation in various electronic systems.
- Power supplies for industrial, automotive, and consumer electronics.
- Battery-powered devices requiring stable voltage regulation.
- Telecommunication equipment and data processing systems.
Q & A
- What is the output voltage of the L78M15CV?
The output voltage of the L78M15CV is 15 V with a tolerance of 4% (C version).
- What is the maximum output current of the L78M15CV?
The maximum output current of the L78M15CV is 500 mA.
- What are the key protection features of the L78M15CV?
The L78M15CV features internal current limiting, thermal shutdown, and safe area protection.
- What is the dropout voltage of the L78M15CV?
The dropout voltage of the L78M15CV is 2 V.
- In what temperature range does the L78M15CV operate?
The L78M15CV operates in the temperature range of 0 to 125°C for the C version.
- What packages are available for the L78M15CV?
The L78M15CV is available in TO-220, TO-220FP, DPAK, and IPAK packages.
- What is the quiescent current of the L78M15CV?
The quiescent current of the L78M15CV is typically 6 mA.
- How does the L78M15CV handle short circuit conditions?
The L78M15CV has a short circuit current limit, typically around 250 mA, and also features short circuit peak current protection.
- What are some common applications of the L78M15CV?
The L78M15CV is commonly used in local on-card regulation, power supplies for industrial and automotive electronics, battery-powered devices, and telecommunication equipment.
- What is the thermal resistance junction-case (RthJC) of the L78M15CV?
The thermal resistance junction-case (RthJC) of the L78M15CV is 8 °C/W).
