DTQ3409 – Body Control Module Turn Lamp Driver IC for Automotive Lighting Systems

The DTQ3409 is a dedicated turn lamp driver IC designed for body control modules in automotive applications.
It provides high-side driving capability for LED and incandescent turn signal lamps.
This chip integrates fault detection including open-load, short-circuit, and over-temperature conditions.

The device supports PWM dimming control for sequential turn signal effects.
It features low saturation voltage to minimize power dissipation during high-current operation.
Built-in thermal shutdown with hysteresis ensures safe operation under extreme conditions.

Diagnostic feedback is available through a dedicated fault flag output.
The DTQ3409 can operate directly from 12V automotive battery systems.
It includes reverse battery protection and load dump immunity up to 40V.

This driver chip is optimized for rear combination lamps, side mirror turn lights, and front fender indicators.
It reduces external component count by integrating the power stage and protection circuitry.
Operating temperature range covers -40°C to +125°C for reliable performance in all climates.

The DTQ3409 is suitable for aftermarket BCM repairs or new lighting module production.
It simplifies PCB layout and improves system robustness for turn signal applications.