LD1086DT33TR

Overview

The LD1086DT33TR is a low dropout positive voltage regulator capable of providing up to 1.5A of output current. This specific variant provides a fixed 3.3V output from an input voltage of up to 30V, making it suitable for automotive and industrial power regulation. It features internal current and thermal limiting to protect the device and load during fault conditions.

Why Choose This Part

The device offers a high Power Supply Rejection Ratio (PSRR) of 79dB at 120Hz, ensuring very low output noise. Its DPAK surface-mount package provides a balance between compact footprint and the thermal performance required to handle up to 1.5A loads. Integrated over-current and over-temperature protection mechanisms enhance system reliability without requiring external components.

Applications

Getting Started

When designing with the LD1086DT33TR, ensure a minimum of 10uF capacitance is placed on the output for stability, preferably using tantalum or low-ESR electrolytic capacitors. Consult the datasheet for the dropout voltage curves to ensure the input remains at least 1.5V above the 3.3V output at your maximum expected load. Thermal relief vias should be placed under the DPAK tab to manage heat dissipation effectively at high current levels.

LD1086 Family

Comparing specs that differ across variants. The current part is highlighted.

Categories