DI78L18DAB

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

The DI78L18DAB is a positive fixed voltage linear regulator from Diotec Semiconductor, housed in an SO-8 surface-mount package. It provides a nominal output voltage of 18 V with a tolerance of ±5%, supporting a maximum output current of 0.1 A (100 mA). The device operates within a junction temperature range of -40°C to +125°C and requires a maximum input voltage of 40 V for this output level. Key electrical characteristics include a typical quiescent current of 6.5 mA at 25°C, a dropout voltage of 1.7 V, and a ripple rejection ratio of 38 dB at 120 Hz.

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

• Integrated thermal overload protection safeguards against excessive heat generation during operation.
• Short circuit protection capability ensures device resilience under fault conditions.
• Compliant with RoHS directives without exemptions and adheres to REACH regulations.

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 the specific ordering suffix when purchasing. Standard versions are commercial/industrial grade. Suffix -Q indicates AEC-Q101 compliance, while -AQ denotes parts undergoing qualification. Confirm package type and tape-and-reel specifications match design requirements before finalizing orders.

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

Select this component for applications requiring a stable 18 V rail with low current demands up to 100 mA. Ensure the input voltage remains within the 40 V maximum limit and consider thermal resistance values for PCB layout. Verify if automotive-grade AEC-Q101 compliance is necessary for the target environment.

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

This part belongs to the DI78LxxDAB series of positive fixed voltage regulators manufactured by Diotec Semiconductor. The series offers various fixed output voltages ranging from 3.3 V to 24 V in the SO-8 package. It serves as a compact solution for power management in standard commercial and industrial electronic designs.

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

Check for DI78L18DAB-Q or DI78L18DAB-AQ variants if automotive qualification is required. Other DI78LxxDAB models provide different fixed voltages but share similar packaging and protection features.