LM3409HVMY Datasheet PDF - TI

The LM3409HVMY is a PFET Buck Controller for high power LED drivers. This controller offers wide input voltage range, high-side differential current sense with low adjustable threshold voltage and fast output enable/disable function and ideal for use as constant current sources for driving LEDs where forward currents up to 5A are easily achievable. The LM3409 use Constant Off-Time (COFT) control to regulate an accurate constant current without the need for external control loop compensation. Analogue and PWM dimming are easy to implement and result in a highly linear dimming range with excellent achievable contrast ratios. Programmable UVLO, low-power shutdown and thermal shutdown complete the feature set.

● Differential, high-side current sense

● Cycle-by-cycle current limit

● No control loop compensation required

● Supports all-ceramic output capacitors and capacitor-less outputs

● Low-power shutdown and thermal shutdown

●This device has limited built-in ESD protection, leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.