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CN5728
Multi-function High Brightness LED Driver IC
Product Profile
   Application Note
 
General Description:
The CN5728 is a current regulation integrated circuit operating from an input voltage of 2.8V to 6V, the constant output
current can be set up to 1.5A with an external resistor. The CN5728 is ideal to be used to drive LED. The on-chip power
transistor and current sense block greatly reduce the external component count. The chip also integrates the mode
selection circuit,oscillator and state registers, which can control the LED to operate in one of the following four modes:
High Brightness(HB), Low Brightness(LB), Flashing and Off. The CN5728 adopts the temperature regulation instead
of temperature protection function, the temperature regulation can make the LED being turned on continuously in
case of high ambient temperature or high voltage drop. The other features include the chip enable and button
de-bounce functions.
CN5728 is available in thermally-enhanced 8-pin small outline package (SOP8).
 
Applications:
Flashlight High-brightness LED driver
LED headlights Emergency lights and lighting
 
Features:
Operating Voltage Range: 2.8V to 6V
4 Operating Modes: HB, LB, flash and off
On-chip Power Transistor
Low dropout voltage: 0.4V @ 1.5A
LED pin output current up to 1.5A
Output Current Accuracy: ± 5%
Chip Temperature Regulation
Operating Temperature Range:-40 ℃ to 85 ℃
8-pin small outline package (SOP8)
Pb-free, rohs compliant and halogen free
 
 
 
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