KTD2686 Three-Channel Flash LED Driver with Independent Current Control Datasheet Brief
●Brief Description
■KTD2686 is the ideal power solution for high-power flash LEDs. It includes a highly integrated synchronous boost converter, two current sources and one current sink, providing a very small total solution in portable application. It has both I²C interface and hardware STROBE/TORCH pins for maximum control flexibility. The two integrated current sources and one current sink are independently controlled, their on/off conditions and current settings in Flash/Torch/IR modes can be programmed independently by the I²C interface. It also has three selectable input low voltage protection modes to prevent a system reset under low battery condition. Thermal regulation is also integrated to limit the IC temperature and continuously provide the maximum output current.
■Various protection features are integrated into KTD2686, including cycle-by-cycle input current limit protection, output over-voltage protection, LED fault (open or short) protection, flash timeout protection and thermal shutdown protection.
■KTD2686 is available in a RoHS and Green 12-ball 1.42mm x 1.66mm WLCSP package with 0.4mm pitch.
●Features
■High efficiency synchronous boost converter with 2MHz/4MHz switching frequency option
■I²C interface programming and hardware STROBE/TORCH control
■Two current sources and one current sink
▲LED1: Up to 1.5A (7 bits)
▲LED2: Up to 1.0A (6 bits)
▲LED3: Up to 0.5A (6 bits)
▲Flash/Torch/IR modes
▲Independent LED on/off and current settings
▲Programmable ramp shape and time control
▲Three input low voltage protection modes
▲Flash time-out protection up to 1.44s
▲LED cathode ground connection for improved thermal dissipation (LED1/LED2)
■LED open/short protection
■I²C fault read back (I²C address = 0x63)
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[ Smartphones Camera Flash ][ Tablets Camera Flash ][ Digital Cameras ] |
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Datasheet |
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Please see the document for details |
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WLCSP;WLCSP-12 |
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English Chinese Chinese and English Japanese |
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December 2017 |
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Revision 04a |
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199 KB |
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