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CN5501
High-Voltage, Linear High-Brightness LED Driver IC
Product Profile
     Application Note
General Description:
The CN5501 current regulator operates from a 4V to 32V input voltage range and delivers up to a total of 1A to one or
more strings of high-brightness LEDs.The output current of the CN5501 is adjusted by using an external current-sense
resistor in series with the LEDs. An enable input allows wide-range “pulsed” dimming. The CN5501 is well suited for
applications requiring high-voltage input and is able to withstand automotive load-dump events up to 32V.
LED short and open protection. An on-chip power MOSFET minimizes external components while providing ±5%
output current accuracy.Also an EQ pin is adopted for equalizing LED current among multiple CN5501 used in
parallel.Additional features include a 5V regulated output and thermal regulation, etc.
The CN5501 is available in a thermally enhanced 8-pin SOP package and 8-pin DFN package.
Applications:
Lighting Systems Automotive Interior and Exterior
Navigation indicators Instrumentation illumination
Signage and Beacons
Features:
4V to 32V Operating Voltage
Adjustable LED Current up to 1A
Integrated 32V 1A MOSFET with 1.5A Current Limit(Typical)
Low Current-Sense Voltage Reduces Power Loss
Typical 5% LED Current Accuracy
High-Voltage Chip Enable Input for Dimming Interface
Current Equalizing Among Multiple CN5501 Used in Parallel
Thermal Regulation
Operating Temperature Range:-40℃ to 85℃
Available in Thermally-enhanced 8 pin SOP or 8-pin DFN package.
Pb-free,Rohs Compliant and Halogen Free
 
 
 
Application Note:
Quick Start of CN5501 Demo Board
 
 
 
 
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