Overview
The L7820CV is a part of the L78 series of three-terminal positive voltage regulators produced by STMicroelectronics. These regulators are available in various packages, including TO-220, TO-220FP, D²PAK, and DPAK, and offer several fixed output voltages. The L7820CV specifically provides a fixed output voltage of 20V, making it suitable for a wide range of applications that require stable and regulated voltage supply.
These regulators are designed to provide local on-card regulation, which helps in eliminating the distribution problems associated with single point regulation. They are equipped with internal current limiting, thermal shut-down, and safe area protection, making them highly reliable and durable. With adequate heat sinking, they can deliver output currents of up to 1.5 A.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 20 | V |
| Output Current | Up to 1.5 A | A |
| Input Voltage | Up to 40 V (for VO = 20, 24 V) | V |
| Output Voltage Tolerance | 2% (A version) | % |
| Dropout Voltage | 2 V at IO = 1 A, TJ = 25 °C | V |
| Short Circuit Current | 0.2 A at VI = 35 V, TA = 25 °C | A |
| Short Circuit Peak Current | 2.2 A at TJ = 25 °C | A |
| Operating Junction Temperature Range | 0 to 125 °C (L78xxC, L78xxAC), -40 to 125 °C (L78xxAB) | °C |
| Storage Temperature Range | -65 to 150 °C | °C |
Key Features
- Output current up to 1.5 A
- Fixed output voltage of 20 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, TO-220FP, D²PAK, and DPAK packages
Applications
The L7820CV is suitable for various applications that require a stable and regulated 20V voltage supply. These include:
- Communications equipment
- Computers and peripherals
- Industrial control systems
- Power supplies and DC-DC converters
- Automotive electronics
Q & A
- What is the output voltage of the L7820CV?
The output voltage of the L7820CV is 20 V.
- What is the maximum output current of the L7820CV?
The maximum output current of the L7820CV is up to 1.5 A.
- What types of protection does the L7820CV have?
The L7820CV has thermal overload protection, short circuit protection, and output transition SOA protection.
- What is the dropout voltage of the L7820CV?
The dropout voltage of the L7820CV is 2 V at IO = 1 A, TJ = 25 °C.
- What are the operating temperature ranges for the L7820CV?
The operating junction temperature range is 0 to 125 °C (L78xxC, L78xxAC) and -40 to 125 °C (L78xxAB).
- What is the storage temperature range for the L7820CV?
The storage temperature range is -65 to 150 °C.
- Can the L7820CV be used for adjustable voltage and currents?
Yes, the L7820CV can be used with external components to obtain adjustable voltage and currents.
- What are the typical applications of the L7820CV?
The L7820CV is typically used in communications equipment, computers and peripherals, industrial control systems, power supplies, and automotive electronics.
- What packages are available for the L7820CV?
The L7820CV is available in TO-220, TO-220FP, D²PAK, and DPAK packages.
- What is the minimum load current required for regulation?
The minimum load current required for regulation is 5 mA.
