DI79L18DAB

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

The DI79L18DAB is a negative fixed voltage linear regulator from the DI79LxxAB series, manufactured by Diotec Semiconductor. It provides a nominal output voltage of -18 V with a tolerance of ±5%. The device supports an output current of 0.1 A and operates within an input voltage range of -20.5 V to -33 V. It features a dropout voltage of 1.7 V and includes thermal overload and short-circuit protection. The component is housed in an SO-8 surface-mount package and is rated for junction temperatures between -40°C and +125°C.

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

• Integrated thermal overload protection
• Short circuit proof design
• Fixed negative voltage regulation

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

• High efficiency linear regulators
• Active SCSI termination regulator
• Post regulators for switch mode DC-DC converters
• Battery backed-up regulated supply

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

Verify that the specific part number matches the required negative voltage specification and package type. Confirm compliance with RoHS standards and REACH regulations as documented. Check for any specific automotive qualification suffixes if the application requires AEC-Q101 compliance. Ensure handling procedures account for moisture sensitivity level 3 requirements during storage and assembly.

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

Select this component when a stable negative rail is required for industrial or commercial circuits. Consider the SO-8 package for surface mount applications requiring compact layout. Evaluate the quiescent current and line regulation characteristics against system power budget constraints. Verify that the input voltage range accommodates the maximum source potential without exceeding the absolute maximum ratings.

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

This device belongs to the DI79LxxAB family of negative fixed voltage regulators. The series offers various standard voltage outputs ranging from -5.0 V to -24 V. All members share similar protection features and packaging options, including SO-8, SOT-89, and TO-92. The DI79L18DAB specifically targets applications needing a -18 V supply rail.

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

Other variants within the DI79LxxAB series may serve as functional substitutes if different voltage levels are acceptable. Cross-reference pinouts and thermal resistance values when considering alternative manufacturers' negative LDOs.