XC9116B02AMR

The XC9116B02AMR is designed as the step-up DC/DC converter-backlight LED driver.The output voltage of up to 17.5V can be derived,therefore,four
white LED's in series can be driven.A network of two parallel legs with three in each LED can be also driven. Luminance of the LED's is controlled by changing the duty cycle of a PWM signal applied to the CE pin.Since an LED current can be set up by an external resistance when LEDs are in-series connection,all white LEDs can be turned on equably.Efficiency is high with the XC9116 through the high 1.0MHz switching frequency and the low feedback reference voltage, ensuring the RLED losses are minimal. In addition, an internal MOSFET with an RDSON of 2.0 is used. A low profile and small board area solution can be achieved using a chip coil and an ultra small ceramic output capacitor (CL) of 0.22F.

Features of the XC9116B02AMR are:(1)input voltage range:2.5V to 6.0V;(2)output voltage range:up to 17.5V externally set-up,reference voltage 0.2V +5%;(3)oscillation frequency:1.0MHz,±20%;(4)ON resistance:2.0;(5)No Lx overvoltage limit:XC9116D series;(6)Lx overvoltage limit:XC9116B series;(7)Lx limit current:325mA;(8)Load Capacitor:0.22F,ceramic.

And the absolute maximum ratings of the XC9116B02AMR can be summarized as:(1)Vin pin voltage:VSS-0.3 to 7.0 V;(2)Lx pin voltage:VSS-0.3 to 22.0 V;(3)FB pin voltage:VSS-0.3 to 7.0 V;(4)CE pin voltage:VSS-0.3 to 7.0 V;(5)Lx pin current:1000 mA;(6)operating temperature Range:-40 to + 85 ;(7)storage temperature range:-55 to +125 .If you want to know more information such as the electrical characteristics of the XC9116B02AMR,please download the datasheet in www.seekdatasheet.com .