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High-Voltage, Linear High-Brightness LED Driver IC
Product Profile
     Application Note
General Description:
The CN5502 current regulator operates from a 4V to32V 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 CN5502 is adjusted by using an external current-sense resistor in series with the
LEDs. A dual-mode DIM pin and on-chip 130Hz PWM generator allow PWM dimming with an analog or PWM input
signal.The analog controlsignal at dimming input DIM allows for a theater-dimming effect to be implemented.
The CN5502 is well suited for applications requiring high-voltage input and is able to withstand automotive
load-dump events up to 32V. 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 CN5502 used in parallel.
Additional features include a 5V regulated output and thermal regulation, etc.
The CN5502 is available in a thermally enhanced 8-pin SOP package and 8-pin DFN package.
Lighting Systems Automotive Interior and Exterior
Navigation indicators Instrumentation illumination
Signage and Beacons
4V to 32V Operating Voltage
Adjustable LED Current up to 1A
On-chip 130Hz PWM Generator
Flexible Dimming Control, Analog or PWM Control Signal for PWM and Theater Dimming
External PWM Frequency: 80Hz to 400Hz
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 CN5502 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
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