Automotive display LED-backlight driver with six 150mA channels

The LP8872-Q1 is an automotive high-efficiency, low-EMI and easy-to-use LED

driver with integrated DC-DC power switch. The DC-DC converter supports both boost

and SEPIC topology configuration. The six high-precision

current sinks support PWM phase shifting that is automatically adjusted based on the

number of channels in use. LED brightness can be controlled globally through the I²C

interface or PWM input.

The boost converter has adaptive

output voltage control based on the headroom voltages of the LED current sinks. This

feature minimizes the power consumption by adjusting the boost voltage to the lowest

sufficient level in all conditions.

The LP8872-Q1 supports built-in hybrid PWM dimming and analog current dimming,

which reduces EMI, extends the LED lifetime, and increases the total optical

efficiency.