IS31FL3726A 16-CHANNEL LED DRIVER July 2020 GENERAL DESCRIPTION FEATURES The IS31FL3726A is an industry standard serial Output current capability and number of outputs: shift-register-plus latch-type LED driver operating from a 3V 60mA 16 outputs to 5V supply. It is comprised of 16 constant-current open Current set with external resistor drain sinks designed for driving common anode LEDs. Constant current range: 5mA to 60mA The output current value can be set from 5mA to 60mA I = 45mA V = 3V OUT MAX CC by using an external resistor. As a result, all outputs will I = 60mA V = 5V OUT MAX CC have virtually the same current levels. This driver uses a Current accuracy (All output on, I = 25.2mA) high-speed 4-wire serial interface of up to 30MHz to OUT - Bit to bit: < 4%. drive 16 constant current outputs, a 16-bit shift register, a 16-bit latch and a 16-bit AND-gate circuit. Serial input - Device to device: < 2%. --------------- 200mV LED Dropout at 25mA data appears at the output OUTn channels after 16 For common-anode LEDs clock cycles. Driving the Latch pin will load the 16-bit of shift-register data into the 16-bit output latch to drive the Power supply voltage range, V = 3.0V to 5.5V CC LEDs ON or OFF. The Enable pin can be used as a Serial and parallel data transfer rate: 30MHz PWM input to adjust the LED brightness. The (Max. cascade connection) IS31FL3726A operates from a 3V to 5.5V supply, and is Operating temperature range, T = -40C ~ A specified over the -40C to +125C temperature range. +125C Package: QFN-24 (4mm4mm), SSOP-24 and eTSSOP-24 APPLICATIONS Video display panel LED driver Point of sale signs Variable LED signboards TYPICAL APPLICATION CIRCUIT VBattery LDO VCC 3.3V OUT0 1F0.1 F OUT1 SERIAL-IN OUT2 ENABLE Micro Controller LATCH IS31FL3726A CLOCK SERIAL-OUT OUT13 R-EXT OUT14 REXT 2k GND OUT15 Figure 1 Typical Application Circuit Lumissil Microsystems www.lumissil.com 1 Rev. A, 06/23/2020 IS31FL3726A TYPICAL APPLICATION CIRCUIT (CONTINUE) Figure 2 Typical Application Circuit (Serial Synchronization) Lumissil Microsystems www.lumissil.com 2 Rev. A, 06/23/2020