LM79L24

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

The TAEJIN LM79L24 is a fixed-voltage monolithic integrated circuit negative voltage regulator designed for applications requiring stable power delivery. It provides a nominal output of -24V with a maximum continuous output current of 100mA. The device operates within an input voltage range of -27V to -38V and supports an operating junction temperature from -40°C to +125°C. Key electrical characteristics include a typical dropout voltage of 1.7V, a bias current of approximately 6.5mA at 25°C, and ripple rejection capability of up to 47dB at 120Hz.

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

• Integrated thermal overload protection prevents damage during overheating conditions.
• Internal short-circuit limiting safeguards the component against output faults.
• Designed for on-card regulation to eliminate noise and distribution issues associated with single-point regulation.

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

• On-card voltage regulation
• Replacement for Zener diode-resistor combinations
• Power-pass element integration for high-current regulators

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

Verify the specific package variant (TO-92 or SOT-89) required for your design, as the LM79L24 designation covers multiple physical form factors including bulk straight leads, taping bent leads, and reel-mounted SOT-89 configurations. Confirm that the selected manufacturer's datasheet aligns with your absolute maximum rating requirements, particularly regarding the -40V input limit for this specific voltage grade.

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

Select the LM79L24 when a stable negative rail is needed for low-to-moderate current loads up to 100mA. Ensure the input voltage remains within the -27V to -38V window to maintain regulation. Consider the thermal resistance of the chosen package (e.g., 162 °C/W for TO-92) to calculate power dissipation limits under expected ambient temperatures and load currents.

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

This component belongs to the LM79Lxx series of 3-terminal negative voltage regulators manufactured by HTC Korea (TAEJIN Technology). The series includes various fixed output voltages such as -5V, -6V, -8V, -9V, -12V, -15V, -18V, and -24V. These regulators are widely used in general-purpose electronics where compact size and simple implementation are prioritized over high-efficiency switching topologies.

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

LM79L24TA

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

What is the minimum input voltage required for the LM79L24 to regulate?

The recommended minimum input voltage for the LM79L24 is -27V.

Does the LM79L24 require external components for basic operation?

No external components are strictly required for the regulator to function, though bypass capacitors are recommended for optimum stability and transient response.