LM3433
Description
The LM3433 is an adaptive constant on-time DC/DC buck (step-down) constant current controller (a true current source). The LM3433 provides a constant current for illuminating high power LEDs.
Key Features
- Operating input voltage range of -9V to -14V w.r.t. LED * * * * * * * * *
- anode Control inputs are referenced to the LED anode Output current greater than 6A Greater than 30kHz PWM frequency capable Negative output voltage capability allows LED anode to be tied directly to chassis for maximum heat sink efficacy No output capacitor required Up to 1MHz switching frequency Low IQ, 1mA typical Soft start Adaptive programmable ON time allows for constant ripple current LLP-24 package
