LD1086DTTRY

Overview

The LD1086DTTRY is a low-dropout positive voltage regulator from STMicroelectronics, part of the LD1086 series. It provides up to 1.5 A output current with fixed output voltages including 3.3 V and 5 V. The device features a maximum dropout voltage of 1.2 V at full load and maintains an output tolerance within ±1% at 25 °C. It operates over a wide temperature range from -40 °C to +125 °C and utilizes a DPAK surface-mount package.

Feature Summary

• Provides stable regulated power with high efficiency by directing quiescent current into the load rather than wasting it as heat.
• Features internal thermal overload protection and current limiting to ensure safe operation under fault conditions.
• Requires only a minimal 10 μF output capacitor for stability, simplifying circuit design.

Applications

• Power supplies for embedded systems requiring efficient linear regulation.
• Battery-powered equipment where low dropout voltage extends operational life.
• General-purpose voltage regulation in industrial control modules.

Procurement Notes

Verify the specific suffix 'TRY' against official STMicroelectronics documentation to confirm exact packaging and tape-and-reel specifications. Ensure the selected output voltage variant matches the required system rail. Confirm RoHS compliance status through the manufacturer's latest datasheet before finalizing procurement orders.

Selection Notes

Select this component when a fixed output voltage is preferred over adjustable variants to reduce external component count. The DPAK package offers suitable thermal dissipation for currents up to 1.5 A in compact designs. Consider the input-output voltage differential to ensure the dropout specification remains within acceptable limits for the application.

Part Context

This regulator belongs to the LD1086 family, which includes both adjustable and fixed output versions. The series is designed to replace older PNP-based regulators, offering superior performance in terms of dropout voltage and output accuracy. It is widely used in applications requiring reliable, cost-effective linear power management solutions.

Replacement Considerations

Check for pin-compatible alternatives such as the LD1086D2TTR or LD1086DTTR if different package styles are required. Verify that substitute components meet the same 1.5 A current rating and thermal protection specifications.