IS31FL3237
IS31FL3237 is 36-CHANNEL LED DRIVER manufactured by Lumissil.
DESCRIPTION
The 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 38m A, which can be adjusted by one 8-bit global control register.
Proprietary programmable technology is used to minimize audible noise caused by MLCC decoupling capacitors. All registers can be programmed via a high speed I2C (1MHz).
The IS31FL3237 can be shut down with minimum current consumption by either pulling the SDB pin low or by using the software shutdown feature
.
The 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.
FEATURES
- 2.7V to 5.5V VCC supply
- Pin to pin with IS31FL3236/IS31FL3236A (QFN-44,
5mm×5mm)
- 1MHz I2C interface, automatic address increment function with readout function
- Four selectable I2C addresses
- Accurate color rendition
- Selectable 8-bit/10-bit/12-bit/16-bit PWM
- 8-bit dot correction
- 8-bit global current adjust
- Open/Short detect function
- 62k Hz PWM frequency (8-bit PWM)
- Temperature detect function
- EMI Reduction Technology
- Spread spectrum
- Selectable Phase Delay
- Selectable 180 degree Clock Phase
- -40°C to +125°C temperature range
- QFN-44 (5mm×5mm) package
APPLICATIONS
- AI-speakers and smart home devices
- LED in home appliances
- LED display for hand-held devices
Lumissil Microsystems
- .lumissil.
Rev. F, 02/21/2022
TYPICAL APPLICATION CIRCUIT
- Note 1 VCC=VBattery 38 37 1F 0.1 F
VCC AD
- Note 2
43 OUT1
44...
