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
- 2 Operating Input Voltage Range of -9V to -14V w.r.t. LED Anode
- Control Inputs 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
