LP8543SQ/NOPB

适用于中型 LCD 背光的 SMBus/I2C 控制型 WLED 驱动器 24-WQFN

LED 驱动器 IC 7 输出 DC DC 稳压器 升压 PWM 调光 60mA 24-WQFN（4x4）

得捷:
IC LED DRV RGLTR PWM 60MA 24WQFN

立创商城:
LP8543SQ/NOPB

德州仪器TI:
SMBus/I2C controlled WLED driver for Medium Sized LCD backlight

贸泽:
LED Lighting Drivers SMBus/I2C Controlled WLED Dvr

艾睿:
LED Driver 70 Segment 3500uA Supply Current 24-Pin WQFN EP T/R

安富利:
The LP8543 is a white LED driver with integrated boost converter. It has 7 adjustable current sinks which can be controlled by SMBus or I2C-compatible serial interface, PWM input and Ambient Light Sensor ALS.The boost converter has adaptive output voltage control based on the LED driver voltages. This feature minimizes the power consumption by adjusting the voltage to lowest sufficient level in all conditions. Phase Shift PWM dimming offers further power saving especially when there is poor matching in the forward voltages of the LED strings. Boost voltage can also be controlled through the SMBus/I2C.Internal EEPROM stores the data for backlight brightness and ambient light sensor calibration. Brightness can be calibrated during the backlight unit production so that all units produce the same brightness. EEPROM also stores the coefficients for the LED control equations and the default LED current value. LED current has 8–bit adjustment from 0 to 60 mA.The LP8543 has several safety and diagnostic features. Low-input voltage detection turns the chip off if the system gets stuck and battery fully discharges. Input voltage detection threshold is adjustable for different battery configurations. Thermal regulation reduces backlight brightness above a set temperature. LED fault detection reports open or LED short fault. Boost over-current fault detection protects the chip in case of over-current event.LP8543 is available in the WQFN 24-pin package.

Chip1Stop:
LED DRVR 70Segment 9V/12V/15V/18V/24V 24-Pin WQFN EP T/R

Verical:
LED Driver 70 Segment 3500uA Supply Current 24-Pin WQFN EP T/R