DI78L3.3DAB

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

The DI78L3.3DAB is a positive fixed voltage linear regulator from Diotec Semiconductor, housed in an SO-8 package. It provides a nominal output voltage of 3.3 V with a tolerance of ±5%, supporting a maximum output current of 0.1 A. The device operates within a junction temperature range of -40°C to +125°C and features thermal overload and short circuit protection. Input voltage ratings vary by output voltage, reaching up to 30 V for this specific model. Key electrical characteristics include a typical quiescent current of 6 mA at 25°C, a dropout voltage of 1.7 V, and ripple rejection of 49 dB at 120 Hz.

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

• Integrated thermal overload protection prevents damage during excessive heat conditions.
• Short circuit protection ensures internal safety against output faults.
• Fixed voltage output eliminates the need for 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 compliance requirements such as RoHS and REACH status before procurement. Confirm that the standard commercial/industrial grade meets the reliability needs of the target application. Check for specific suffixes like -Q or -AQ if automotive qualification under AEC-Q101 is required. Ensure input voltage limits align with the system design to prevent exceeding maximum ratings.

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

Select the DI78L3.3DAB when a stable 3.3 V rail is needed with low component count. Consider the SO-8 package for surface mount assembly. Evaluate power dissipation capabilities based on the expected voltage drop and load current. Verify that the 100 mA output current suffices for the downstream circuitry demands without requiring external pass transistors.

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

This component 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. Other packages available in the family include SOT-89 and TO-92, providing flexibility for different board space and thermal management requirements.

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

Cross-reference with other DI78L3.3 variants in different packages (SOT-89, TO-92) if pinout compatibility allows. Verify equivalent performance from other manufacturers offering 3.3 V linear regulators with similar current and voltage ratings.