DI78L09UAB

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

The DI78L09UAB is a positive fixed voltage linear regulator from the DI78LxxUAB series by Diotec Semiconductor. It provides a nominal output of 9.0 V with a tolerance of ±5% (8.64 V to 9.36 V). The device supports an output current of 100 mA and operates with input voltages up to 30 V. Key electrical parameters include a dropout voltage of 1.7 V, quiescent current of 6.0 mA, and ripple rejection of 44 dB at 120 Hz. It features thermal overload and short circuit protection, operating within a junction temperature range of -40°C to +125°C in a SOT-89 package.

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

• Integrated thermal overload protection for safe operation under high load conditions
• Short circuit protection capability to safeguard the component and connected circuits
• Fixed voltage output configuration ensuring stable regulation without external feedback 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 part number suffix against official Diotec documentation to confirm compliance requirements. Ensure that the ordering information matches the exact voltage and package specifications required for the design. Cross-reference datasheet revision dates to validate parameter accuracy before finalizing procurement decisions.

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

Select this component for applications requiring a reliable 9V source with moderate current demands. Consider the 30V maximum input rating and 1.7V dropout voltage when designing the power stage. Evaluate thermal dissipation capabilities based on the expected ambient temperature and PCB copper pad area to ensure operation remains within the specified junction temperature limits.

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

This device belongs to the DI78LxxUAB family of positive fixed voltage regulators manufactured by Diotec Semiconductor. The series offers various standard voltage outputs ranging from 3.3V to 24V. These regulators are designed for commercial and industrial grade environments, providing a robust solution for general-purpose voltage regulation tasks in compact surface-mount packages.

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

Check for equivalent parts from other manufacturers offering similar 9V, 100mA LDO specifications in SOT-89 packages. Verify pinout compatibility and electrical parameter alignment, particularly regarding dropout voltage and quiescent current, to ensure seamless integration into existing designs.