Overview
The L7812ACV-DG is a member of the L78 series of three-terminal positive voltage regulators produced by STMicroelectronics. This regulator is available in the TO-220 package and is designed to provide a fixed output voltage of 12V. It is highly versatile and can be used in a wide range of applications, offering local on-card regulation and eliminating distribution problems associated with single point regulation. The device is equipped with internal current limiting, thermal shut-down, and safe area protection, making it robust and reliable. With adequate heat sinking, it can deliver output currents of up to 1.5 A.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 11.75 to 12.25 | V |
| Output Current | Up to 1.5 A | A |
| Input Voltage | Up to 35 V | V |
| Output Voltage Tolerance | 2% (A version) | % |
| Dropout Voltage | 2 V | V |
| Thermal Resistance Junction-Case | 5 °C/W (TO-220) | °C/W |
| Thermal Resistance Junction-Ambient | 50 °C/W (TO-220) | °C/W |
| Operating Junction Temperature Range | 0 to 125 °C (L7812ACV) | °C |
| Storage Temperature Range | -65 to 150 °C | °C |
Key Features
- Output current up to 1.5 A
- Fixed output voltage of 12 V
- Thermal overload protection
- Short circuit protection
- Output transition SOA protection
- 2% output voltage tolerance (A version)
- Guaranteed in extended temperature range (A version)
- Internal current limiting and safe area protection
- Available in TO-220 package
Applications
The L7812ACV-DG is suitable for a variety of applications where a stable and regulated 12V supply is required. These include:
- Local on-card regulation in electronic devices
- Power supplies for industrial and consumer electronics
- Automotive systems requiring stable voltage regulation
- Medical devices and equipment
- Telecommunication systems
Q & A
- What is the output voltage of the L7812ACV-DG?
The output voltage of the L7812ACV-DG is 12 V.
- What is the maximum output current of the L7812ACV-DG?
The maximum output current is up to 1.5 A.
- What type of protection does the L7812ACV-DG have?
The device has thermal overload protection, short circuit protection, and output transition SOA protection.
- What is the thermal resistance junction-case for the TO-220 package?
The thermal resistance junction-case for the TO-220 package is 5 °C/W.
- What is the operating junction temperature range for the L7812ACV-DG?
The operating junction temperature range is 0 to 125 °C.
- Can the L7812ACV-DG be used in adjustable voltage applications?
Yes, the device can be used with external components to obtain adjustable voltage and currents.
- What is the minimum load current required for regulation?
The minimum load current required for regulation is 5 mA.
- What is the dropout voltage of the L7812ACV-DG?
The dropout voltage is 2 V.
- What are some common applications of the L7812ACV-DG?
Common applications include local on-card regulation, power supplies for industrial and consumer electronics, automotive systems, medical devices, and telecommunication systems.
- What package types are available for the L78 series?
The L78 series is available in TO-220, TO-220FP, D²PAK, and DPAK packages.
