Status | Prod |
---|---|
Vdd(V) | 2.7-5.5 |
Channels | 36 |
Document | Eval Board, Code, Arduino |
RGB Group | 12 |
Pkg-Pin(mm) | QFN-44(5x5) |
Ctrl. Interface | I2C - 1MHz |
Special Features | Noise Reduction, Spread Spectrum, 16-bt PWM and White Balance, open and short detect, 38mA per channel, pin compatible with IS31FL3236A |
Package Type | QF = QFN |
Solder Type | L = Lead-free (RoHS Compliant) |
Product Family | 31 = Commercial/Industrial Analog |
Part Number | 3237 = 3237 |
Product Type | FL = FxLED Driver |
Temperature Grade | S4 = Industrial temp. (-40°C to 125°C) |
Package option | TR = Tape & Reel |
Outpack | Tape on Reel |
IS31FL3237 is an LED driver with 36 constant current channels. Each channel can be pulse width modulated (PWM) by 16 bits for smooth LED brightness control. In addition, each channel has an 8-bit output current control register which allows fine tuning the current for rich RGB color mixing, e.g., a pure white color LED application. The maximum output current of each channel is designed to be 38mA, which can be adjusted by one 8-bit global control register. Proprietary programmable algorithms are used in IS31FL3237 to minimize audible noise caused by the MLCC decoupling capacitor. All registers can be programmed via a high speed I2C (1MHz). IS31FL3237 can be turned off with minimum current consumption by either pulling the SDB pin low or by using the software shutdown feature. IS31FL3237 is available in QFN-44 (5mm×5mm) package. It operates from 2.7V to 5.5V over the temperature range of -40°C to +125°C.