DI79L18UAB

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

The DI79L18UAB is a negative fixed voltage regulator from Diotec Semiconductor, designed for commercial and industrial applications. It operates within an input voltage range of -20.5 V to -33 V and delivers a nominal output of -18.0 V with a tolerance of ±5%. The device supports a maximum output current of 100 mA and features a dropout voltage of 1.7 V. It includes thermal overload and short circuit protection, ensuring reliability under varying load conditions.

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 integrity under fault conditions.
• Fixed voltage output provides stable regulation without external adjustment components.

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 grade. Suffixes such as -Q indicate AEC-Q101 compliance, while -AQ denotes qualification status. Confirm package type and tape/reel specifications match design requirements before finalizing orders.

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

Select this component for circuits requiring negative voltage regulation up to 100 mA. Ensure the input voltage remains within the specified minimum and maximum limits relative to the -18 V output. Consider thermal resistance and ambient temperature constraints to maintain junction temperature below 125°C during continuous operation.

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

This part belongs to the DI79LxxUAB series of negative fixed voltage regulators. The series offers various output voltages ranging from -5.0 V to -24 V in the SOT-89 package. It serves as a low-cost alternative to traditional linear regulators for standard commercial and industrial power management tasks.

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

Check for DI79L18UAB equivalents from other manufacturers offering identical -18 V output and SOT-89 packaging. Verify pinout compatibility and electrical parameters such as dropout voltage and quiescent current to ensure seamless integration into existing designs.