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FAN5702UMP20X Datasheet(PDF) 1 Page - Fairchild Semiconductor |
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FAN5702UMP20X Datasheet(HTML) 1 Page - Fairchild Semiconductor |
1 / 17 page August 2010 © 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN5702 • Rev. 1.0.3 FAN5702 Configurable 180mA 6-LED Driver with I 2C Control Features Six (6) Parallel LEDs (up to 30mA Each) Total Package Load Current Capability: 180mA Group from 2 to 6 LEDs for Flexible Backlighting I 2C Interface for Easy Programming >600:1 Dimming Ratio for 100Hz PWM Frequency Logarithmically Controlled Dimming with 64 Steps Secondary Brightness Control Using PWM Dimming up to 20kHz in Conjunction with I 2C Dimming − Dynamic Backlight Control (DBC) to Reduce Current Consumption Up to 92% Efficiency Built-in 1.5x Charge Pump with Low Drop-Out Bypass Switch and automatic switching to 1x mode 1.2MHz Switching Frequency for Small-Sized Capacitors 16-Bump 1.6mm × 1.6mm WLCSP (0.6mm Height) 16-Lead 3.0mm x 3.0mm UMLP (0.55mm Height) Applications LCD Backlighting Mobile Handsets / Smartphones Portable Media Players Description The FAN5702 is a highly integrated and configurable charge- pump-based multi-LED driver. The device can drive up to six LEDs in parallel with a total output current of 180mA. Regulated internal current sinks deliver excellent current and brightness matching to all LEDs. The FAN5702 has an I 2C interface that allows the user to independently control the brightness with a default grouping of 2,1,1,1,1 for a maximum of five independent lighting channels. The LED driver can be programmed in a multitude of configurations to address broad lighting requirements for different platforms. Each LED can be configured through I 2C as five independent channels (Group A has two LEDs by default) or any additional LEDs can join Group A to increase the backlighting needs as the display size increases. The device offers a second dimming control using the EN/PWM pin. Applying a PWM dimming signal to this pin allows control of the dimming of Group A LEDs so that the average current is the linear value multiplied by the PWM dimming duty-cycle. The device provides excellent efficiency, without an inductor, by operating the charge pump in 1.5x or pass-through mode. The FAN5702 can be ordered with default ISET values of 30mA, 20mA, 15mA, or 8mA. The default ISET is always determined by the ISET ordered (see Ordering Information). Ordering Information Part Number LED Current (ISET) Temperature Range Package Packing FAN5702UC30X 30mA -40 to 85°C WLCSP-16, 0.4mm Pitch Tape and Reel FAN5702UC20X 20mA -40 to 85°C WLCSP-16, 0.4mm Pitch Tape and Reel FAN5702UC15X 15mA -40 to 85°C WLCSP-16, 0.4mm Pitch Tape and Reel FAN5702UC08X 8mA -40 to 85°C WLCSP-16, 0.4mm Pitch Tape and Reel FAN5702UMP30X 30mA -40 to 85°C UMLP-16, 3.0 x 3.0 x 0.55mm Tape and Reel FAN5702UMP20X 20mA -40 to 85°C UMLP-16, 3.0 x 3.0 x 0.55mm Tape and Reel FAN5702UMP15X 15mA -40 to 85°C UMLP-16, 3.0 x 3.0 x 0.55mm Tape and Reel FAN5702UMP08X 8mA -40 to 85°C UMLP-16, 3.0 x 3.0 x 0.55mm Tape and Reel |
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