L7824CT

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The L7824CT is a positive linear voltage regulator from the STMicroelectronics L78 series, housed in a TO-3 package. It provides a fixed output voltage of 24 V with a maximum output current of 1.5 A. The device operates within an input voltage range of 26 V to 40 V and supports junction temperatures up to +125 °C. Key electrical specifications include a typical quiescent current of 4.6 mA, line regulation of 240 mV, load regulation of 100 mV, and a power supply rejection ratio (PSRR) of 50 dB.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Provides local on-card regulation to eliminate single-point regulation issues
• Includes internal thermal overload protection and short-circuit protection
• Features output safe operating area (SOA) protection

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• General-purpose positive voltage regulation
• Local card-level power management
• Industrial equipment power supplies

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific package variant, as 'L7824CT' typically denotes the TO-3 metal can package, which differs electrically and mechanically from the plastic TO-220 variants like L7824CP. Confirm RoHS compliance status for the specific manufacturing batch. Ensure the supplier documentation explicitly references the TO-3 form factor to avoid substitution errors with surface-mount or smaller through-hole packages.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a robust metal-can package is required for high-power dissipation or specific mounting constraints. The fixed 24 V output eliminates external resistor networks. Verify that the input voltage remains within the 26 V to 40 V window to maintain proper dropout voltage margins while staying below the absolute maximum rating.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This part belongs to the L78 series of three-terminal positive linear regulators. The series offers fixed output voltages ranging from 5 V to 24 V with currents up to 1.5 A. The L7824CT specifically utilizes the legacy TO-3 package, distinguishing it from the more common plastic TO-220 versions found in modern consumer electronics.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

• L7824CP (TO-220-3 FP package)
• L7824CV (TO-220FP package)

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators FAQ

What is the difference between L7824CT and L7824CP?

The primary difference is the package type. L7824CT uses a TO-3 metal can package, while L7824CP uses a TO-220-3 FP plastic package. Electrical characteristics remain identical.

Does the L7824CT have adjustable output voltage?

No, the L7824CT provides a fixed output voltage of 24 V. Adjustable regulators require different part numbers such as those in the LM317 series.