L78M24ABV

Overview

The L78M24ABV is a three-terminal positive linear voltage regulator from the STMicroelectronics L78MxxA series, providing a fixed 24 V output with a maximum current of 0.5 A. It operates within an extended temperature range of -40 °C to +125 °C and features ±2% output voltage tolerance. The device supports a maximum input voltage of 40 V and includes internal thermal overload protection, short-circuit protection, and safe area protection.

Feature Summary

• Integrated thermal overload protection that shuts down the circuit during excessive power conditions
• Internal short-circuit protection limiting maximum output current
• Output transistor safe-area compensation reducing output short-circuit as voltage across the pass transistor increases

Applications

• Local on-card regulation for electronic circuits
• Power supplies requiring fixed positive voltage outputs
• Equipment needing protection against thermal and short-circuit faults

Procurement Notes

Verify the specific ordering suffix matches the required package type (TO-220) and environmental grade. Confirm the 'AB' designation aligns with the extended temperature range (-40 °C to +125 °C) and ±2% tolerance requirements. Ensure compatibility with the intended PCB footprint and heat dissipation strategy.

Selection Notes

Select this component when a fixed 24 V output at up to 0.5 A is required in through-hole TO-220 packaging. It is suitable for applications demanding operation in extended temperature environments. Consider adequate heat sinking if continuous output currents approach or exceed the rated limit to maintain performance.

Part Context

This part belongs to the L78MxxA series of precision 500 mA regulators. The series offers various fixed output voltages including 5, 6, 8, 9, 10, 12, 15, and 24 V. These regulators are designed to eliminate distribution problems associated with single-point regulation by providing local on-card voltage control.

Replacement Considerations

L78M24ACV