Lots of info around the led current, the output voltage, ambient light sensing, ambient, ambient light, the brightness control, and full scale current are described in this appl. Inside this appl the reader can find description regarding the general configuration, typical performance, general configuration, current control, brightness mapping, and the resonant frequency.
This appl presents info related to ambient light current, instruments, voltage range, light sensor, configuration, typical performance characteristics, and light current control. The following are excerpted from this appl:
Drives up to 11 LED’s in series 1000:1 Dimming Ratio 90% Efficient Programmable Dual Ambient Light Sensor Inputs with internal ALS Voltage Setting Resistors I2C Programmable Logarithmic or Linear Brightness Control External PWM Input for Simple Brightness Adjustment True Shutdown Isolation for LED’s and Ambient Light Sensors Internal Soft-Start Limits Inrush Current Wide 2.7V to 5.5V Input Voltage Range 40V and 25V Over-Voltage Protection Options 500kHz Fixed Frequency Operation 839mA Peak Current Limit Low-Profile 12-Bump DSBGA Package The LED current is adjustable from 0 to 29.5mA via an I2C-compatible interface. The 127 different current steps and 8 different maximum LED current levels give over 1000 programmable LED current levels. Additionally, PWM brightness control is possible through an external logic level input.
In addition, this appl explains discussion such as boost converter, performance characteristics, brightness, output, control, and brightness control.