KA7824E

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

The KA7824E is a three-terminal positive linear voltage regulator from the KA78XXE series, manufactured by onsemi. It provides a fixed output voltage of 24 V with a maximum output current of 1 A. The device operates within an input voltage range of 27 V to 38 V and supports junction temperatures from -40°C to +125°C. Electrical characteristics include a line regulation of up to 480 mV and load regulation of up to 480 mV at full load. The unit features internal thermal overload protection, short-circuit protection, and safe operating area (SOA) protection.

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

• Integrated thermal overload protection prevents damage during overheating conditions.
• Built-in short-circuit protection safeguards the device against output faults.
• Safe operating area (SOA) protection ensures stability under varying load and voltage stress.

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

• General-purpose power supply circuits requiring stable 24 V DC rails
• Embedded systems utilizing fixed-voltage regulation for logic or peripheral components
• Industrial control equipment needing robust linear regulation with overcurrent protection

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

Verify the exact part number suffix and manufacturer origin, as Fairchild Semiconductor products were integrated into ON Semiconductor. Confirm that the component matches the KA78XXE series specifications rather than the KA78XXAE variant, which has different temperature ranges and tolerances. Ensure the package type corresponds to TO-220 or D-PAK as required by your design constraints before procurement.

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

Select the KA7824E when a fixed 24 V output is required with up to 1 A current capability in through-hole or surface-mount applications. Consider the thermal resistance values and ensure adequate heat sinking is provided to maintain operation within the specified junction temperature limits. Verify input voltage requirements fall between 27 V and 38 V to ensure proper regulation and dropout performance.

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

The KA7824E belongs to the KA78XXE family of three-terminal positive regulators originally developed by Fairchild Semiconductor. Following the acquisition by ON Semiconductor, these parts are now distributed under the onsemi brand. The 'E' suffix denotes the standard commercial/industrial grade version with a wider operating temperature range compared to the 'AE' variant.

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

KA7824AE

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

What is the difference between KA7824E and KA7824AE?

The KA7824E operates over a temperature range of -40°C to +125°C, while the KA7824AE operates from 0°C to +125°C. Additionally, the AE variant typically offers tighter output voltage tolerance (±2%) compared to the E variant (±4%).

Does the KA7824E require external capacitors for stability?

Yes, typical application circuits recommend an input capacitor (e.g., 0.33 μF) and an output capacitor (e.g., 0.1 μF) to prevent oscillation and improve transient response, although the device is inherently stable under most conditions.