DATA SHEET www.onsemi.com Configurable 180 mA MARKING DIAGRAM 2 6-LED Driver with I C Control Y2&K WLCSP16 1.61 x 1.61 x 0.586 &.&2&Z FAN5702 CASE 567SB Description The FAN5702 is a highly integrated and configurable Y2 = Device Marking chargepump based multiLED driver. The device can drive up to six K = Lot Code LEDs in parallel with a total output current of 180 mA. Regulated &. = Pin One Dot internal current sinks deliver excellent current and brightness &2 = 2 Digit Date Code matching to all LEDs. Z = Assembly Plant Code 2 The FAN5702 has an I C interface that allows the user toindependently control the brightness with a default grouping of 2,1,1,1,1 for a maximum of five independent lighting channels. MARKING The LED driver can be programmed in a multitude of configurations DIAGRAM to address broad lighting requirements for different platforms. Each 2 1 Y&Z&2&K LED can be configured through I C as five independent channels 5702 (Group A has two LEDs by default) or any additional LEDs can join UQFN16 3 x 3, 0.5P C xx Group A to increase the backlighting needs as the display size CASE 523BB increases. The device offers a second dimming control using the EN/PWM pin. Applying a PWM dimming signal to this pin allows Y = onsemi Logo &Z = Assembly Plant Code control of the dimming of Group A LEDs so that the average current is &2 = Numeric Date Code the linear value multiplied by the PWM dimming dutycycle. K = Lot Code The device provides excellent efficiency, without an inductor, by 5702C xx = Specific Device Code operating the charge pump in 1.5x or passthrough mode. xx = 30, 20, 15, 08 The FAN5702 can be ordered with default ISET values of 30 mA, 20 mA, 15 mA, or 8 mA. The default ISET is always determined by the ISET ordered (see Ordering Information). ORDERING INFORMATION See detailed ordering and shipping information on page 15 of Features this data sheet. Six (6) Parallel LEDs (up to 30 mA Each) Total Package Load Current Capability: 180 mA Group from 2 to 6 LEDs for Flexible Backlighting 2 I C Interface for Easy Programming >600:1 Dimming Ratio for 100 Hz PWM Frequency Logarithmically Controlled Dimming with 64 Steps Secondary Brightness Control Using PWM Dimming 2 up to 20 kHz in Conjunction with I C Dimming Dynamic Backlight Control (DBC) to Reduce Current Consumption Up to 92% Efficiency Builtin 1.5x Charge Pump with Low DropOut Bypass Switch and Automatic Switching to 1x Mode 1.2 MHz Switching Frequency for SmallSized Capacitors 16Bump 1.6 mm x 1.6 mm WLCSP (0.6 mm Height) 16Lead 3.0 mm x 3.0 mm UQFN (0.55 mm Height) These are PbFree and Halide Free Devices Applications LCD Backlighting Mobile Handsets / Smartphones Portable Media Players Semiconductor Components Industries, LLC, 2010 1 Publication Order Number: August, 2021 Rev. 2 FAN5702/DGROUP Aexpandable to 6 LEDs CURRENT SINKS FAN5702 Typical Application VOUT C1+ C 1 F OUT 1 F C1 C2+ CHARGE D1A PUMP 1 F C2 D2A VIN D3 1 F GND D4 EN / PWM D5 SDA LOGIC AND D6 CONTROL SCL Figure 1. Typical Application WLCSP Pin Configuration A1 A2 A3 A4 A4 A3 A2 A1 B1 B2 B3 B4 B4 B3 B2 B1 C1 C2 C3 C4 C4 C3 C2 C1 D1 D2 D3 D4 D4 D3 D2 D1 Bumps Facing Up Bumps Facing Down Figure 2. WLCSP16, 0.4 mm Pitch, 1.61 x 1.61 mm PIN DEFINITIONS Pin Name Description D2 VIN Input Supply Voltage. Connect to 2.7 5.5 V input power source. DC B4 GND Ground D1 VOUT Charge Pump Output Voltage. Connect to LED anodes. D3, D4 C1+, C1 Charge pump flying capacitor 1 C3, C4 C2+, C2 Charge pump flying capacitor 2 A1, A2 D2A, D1A LED Outputs B1, B2 D4, D3 C1, C2 D6, D5 A4 EN / PWM Enable / PWM dimming input. By default, this pin acts as a simple enable / disable function. When this pin is HIGH, normal operation is enabled. When LOW, the IC is reset and all 2 functions (including I C communications) are disabled. By setting General Purpose register bit 7 = 1, the pin functions as a PWM dimming input for Group A. To restore the Enable function, the General Purpose register bit 7 must be set LOW. 2 B3 SDA I C interface serial data 2 A3 SCL I C interface serial clock www.onsemi.com 2