Overview
The L78M05CV-DG is a precision 500 mA linear voltage regulator from STMicroelectronics. This component is part of the L78M series, which offers a range of fixed output voltages and is designed for use in various applications requiring local on-card regulation. The L78M05CV-DG specifically provides a fixed output voltage of 5V and is available in the TO-220 package. It is known for its robust protection features, including thermal overload protection, short circuit protection, and output transition SOA protection, making it essentially indestructible if adequate heat sinking is provided.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Output Voltage (VO) | 4.8 | 5 | 5.2 | V |
| Output Current (IO) | - | - | 500 | mA |
| Input Voltage (VI) | - | - | 35 | V |
| Line Regulation (∆VO) | - | - | 100 | mV |
| Load Regulation (∆VO) | - | - | 120 | mV |
| Quiescent Current (Id) | - | 6 | - | mA |
| Dropout Voltage (Vd) | - | 2 | - | V |
| Short Circuit Current (Isc) | - | - | 300 | mA |
| Thermal Resistance Junction-Case (RthJC) | - | 5 | - | °C/W |
| Thermal Resistance Junction-Ambient (RthJA) | - | 50 | - | °C/W |
Key Features
- Fixed Output Voltage: Provides a stable 5V output voltage.
- High Current Capability: Can deliver up to 500 mA of output current.
- Thermal Overload Protection: Protects the device from overheating.
- Short Circuit Protection: Safeguards against short circuit conditions.
- Output Transition SOA Protection: Ensures safe operation during output transitions.
- Low Dropout Voltage: 2V dropout voltage for efficient operation.
- Low Quiescent Current: Typical quiescent current of 6 mA.
- Wide Operating Temperature Range: Operates from -40°C to 125°C for the AB version and 0°C to 125°C for the AC version.
Applications
The L78M05CV-DG is suitable for a variety of applications, including:
- Local On-Card Regulation: Provides stable voltage regulation on PCBs, eliminating distribution problems associated with single point regulation.
- Industrial Control Systems: Used in control systems that require stable and reliable voltage supply.
- Consumer Electronics: Suitable for use in consumer electronics where a stable 5V supply is necessary.
- Automotive Systems: Can be used in automotive systems due to its robust protection features and wide operating temperature range.
Q & A
- What is the output voltage of the L78M05CV-DG?
The output voltage of the L78M05CV-DG is 5V.
- What is the maximum output current of the L78M05CV-DG?
The maximum output current is 500 mA.
- What protection features does the L78M05CV-DG have?
The device includes thermal overload protection, short circuit protection, and output transition SOA protection.
- What is the typical quiescent current of the L78M05CV-DG?
The typical quiescent current is 6 mA.
- What is the dropout voltage of the L78M05CV-DG?
The dropout voltage is 2V.
- What are the operating temperature ranges for the L78M05CV-DG?
The operating temperature ranges are -40°C to 125°C for the AB version and 0°C to 125°C for the AC version.
- What package types are available for the L78M series?
The L78M series is available in TO-220, TO-220FP, DPAK, and IPAK packages.
- Can the L78M05CV-DG be used for adjustable voltage regulation?
Yes, the device can be used with external components to obtain adjustable voltage and currents.
- What is the thermal resistance junction-case (RthJC) for the TO-220 package?
The thermal resistance junction-case (RthJC) for the TO-220 package is 5°C/W.
- Is the L78M05CV-DG suitable for automotive applications?
Yes, it is suitable due to its robust protection features and wide operating temperature range.
