DI79L15ZAB

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

The DI79L15ZAB is a negative fixed voltage linear regulator from Diotec Semiconductor, designed for commercial and industrial applications. It provides a nominal output of -15 V with a tolerance of ±5%, supporting an output current up to 100 mA. The device operates within an input voltage range of -30 V to -40 V and features a junction temperature rating of 125°C. Key electrical characteristics include a typical quiescent current of 6.5 mA at 25°C, a dropout voltage of 1.7 V, and ripple rejection of 39 dB at 120 Hz. Line regulation is specified at 300 mV, while load regulation reaches 150 mV.

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

• Integrated thermal overload protection and short circuit protection for enhanced reliability.
• Fixed negative voltage output available in standard ranges without external components.
• Compliant with RoHS directives and REACH regulations regarding conflict minerals.

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 suffix designation when ordering, as variants such as -Q indicate AEC-Q101 compliance while standard versions lack this automotive qualification. Confirm package availability, as the DI79Lxx series is also offered in SOT-89 and SO-8 formats. Ensure that the application environment remains within the specified commercial or industrial grade limits, as the component is not intended for life-support systems or specialized high-reliability scenarios without customer validation.

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

Select the DI79L15ZAB for circuits requiring a stable negative rail with moderate current demands up to 100 mA. The TO-92 package suits through-hole designs where space constraints are minimal. Consider the 1.7 V dropout voltage when determining the minimum required input voltage to maintain regulation under full load. The internal thermal shutdown provides robustness against overheating, reducing the need for complex external protection circuits in standard implementations.

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

This component belongs to the DI79LxxZAB family of three-terminal negative voltage regulators manufactured by Diotec Semiconductor. The series offers multiple fixed voltage options ranging from -5.0 V to -24 V, all sharing identical pinouts and protective features. The ZAB suffix denotes the TO-92 plastic package variant, distinguishing it from surface-mount alternatives like the UAB (SOT-89) and DAB (SO-8) packages within the same product line.

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

Direct substitutes include other manufacturers' L79L15 equivalents, such as the STMicroelectronics L79L15CZ, which share similar pin configurations and electrical specifications. Verify compatibility regarding thermal resistance and maximum input voltage ratings before substitution. Cross-reference datasheets to ensure equivalent line and load regulation performance meets the target design requirements.