STMicroelectronics

L7820CV

L7820CV Description

The L7820CV from STMicroelectronics is a fixed-output positive linear voltage regulator designed to deliver a stable 20V output at up to 1.5A of continuous current. With a wide input voltage range of up to 40V, this regulator is well-suited for applications requiring robust voltage regulation. The device operates within a temperature range of 0°C to 125°C, making it reliable for industrial and automotive environments. Packaged in a TO-220AB through-hole format, the L7820CV is easy to integrate into power supply designs. Although marked as obsolete, it remains a dependable choice for legacy systems due to its high PSRR (52dB at 120Hz) and low dropout voltage (2V typical at 1A).

L7820CV Features

• Fixed 20V Output: Ensures stable voltage regulation without external adjustments.
• High Current Capacity: Supports 1.5A output current, ideal for powering medium-load circuits.
• Wide Input Range: Accepts up to 40V input, accommodating fluctuating supply voltages.
• Low Dropout Voltage: 2V dropout at 1A minimizes power dissipation.
• Robust Protection: Includes over-temperature and short-circuit protection for enhanced reliability.
• High PSRR (52dB): Effectively suppresses input ripple, suitable for noise-sensitive applications.
• Through-Hole Package (TO-220AB): Facilitates easy mounting and heat dissipation.
• RoHS3 Compliant: Meets environmental standards for hazardous substance restrictions.

L7820CV Applications

The L7820CV is ideal for:

• Industrial Power Supplies: Provides stable voltage for control systems and motor drivers.
• Automotive Electronics: Suitable for infotainment systems and onboard power management.
• Test and Measurement Equipment: Ensures precise voltage delivery for sensitive instruments.
• Legacy Systems Maintenance: A reliable replacement for obsolete power regulation modules.
• Consumer Electronics: Used in audio amplifiers and display power circuits.

Conclusion of L7820CV

The L7820CV is a robust, high-performance linear voltage regulator offering stable 20V output, high current capacity, and excellent noise rejection. While obsolete, its durability, protection features, and wide operating range make it a preferred choice for industrial, automotive, and legacy applications. Engineers seeking a simple, reliable, and efficient voltage regulation solution will find the L7820CV a compelling option despite its discontinued status.