KTD3156 Datasheet Brief : 6P10S LED Driver with PWM-Control Mixed-Mode Dimming
Each of the six current sinks regulates up to 30mA. With a 40V rated output, each string of the boost can connect up to 10LEDs in series, for a total of 60 LEDs.
KTD3156 features mixed-mode dimming, which switches between PWM dimming at low dimming duty cycle and analog (DC current) dimming at high dimming duty cycle to increase the total power efficiency. The transition point of these two modes is programmable to 12.5% or 25% PWM duty cycle. The PWM dimming mode’s output PWM dimming frequency can be programmed to fixed 22kHz or following input PWM dimming frequency. For fixed 22kHz output PWM dimming, phase shift function is implemented among these six channels to further lower the input current ripple and output voltage ripple.
Various protection features are built into KTD3156, including cycle-by-cycle input current limit protection, output over-voltage protection, LED fault (open or short) protection and thermal shutdown protection. The leakage current in shutdown mode is 0.1μA.
KTD3156 is available in a RoHS and Green compliant 16-lead 3x3x0.75mm ThinQFN or 16-lead 1.65mm x 1.65mm WLCSP package.
[ Tablet Backlight ][ Netbook Backlight ][ Notebook Backlight ][ Portable mediaplayers ] |
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Datasheet |
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Please see the document for details |
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TQFN33-16;WLCSP-16 |
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English Chinese Chinese and English Japanese |
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November2015 |
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137 KB |
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