MAX16825 Overview
These devices provide three open-drain constant-current-sinking outputs that are rated to 36V and deliver up to 150mA of current to each string of high-brightness LEDs (HB LEDs). The current at each output is programmable by means of an external current-sense resistor. The MAX16824 features three PWM inputs that control the duty cycle of the output current, allowing a wide LED dimming range to be implemented.
MAX16825 Key Features
- 6.5V to 28V Operating Range
- Outputs Connected to 36V Supply for Long LED Strings
- Three 36V-Rated Output Channels with Independently Adjustable LED Current
- 150mA Output Current Per Channel
- ±5% LED Current Accuracy
- PWM Dimming Three Independent Dimming Control Inputs (MAX16824) 4-Wire Serial Interface LED Current Chopping (MAX16825)
- +5V (±5%) Regulated Output with 4mA Source Capability
- Fast Transient Dimming Response
- 200mV Current-Sense Reference Reduces Power Loss
- Thermal Shutdown