1 Features
• AEC-Q100 qualified for automotive applications:
– Device temperature grade 1:
–40°C to +125°C, TA
– Device HBM ESD classification level 2
– Device CDM ESD classification level C4B
• Input voltage operating range 3V to 48V
• Four high-precision current sinks
– Up to 200mA DC current for each current sink
– Current matching 1% (typical)
– Dimming ratio 32 000:1 using 152Hz LED
output PWM frequency
– Up to 16-bit LED dimming resolution with I2C,
or PWM input
– 8 Configurable LED strings configuration
• Auto-phase shift PWM dimming
• 12-bit analog dimming
• Up to 48V VOUT boost or SEPIC DC/DC controller
– Switching frequency 100kHz to 2.2MHz
– Boost spread spectrum for reduced EMI
– Boost sync input to set boost switching
frequency from an external clock
– Output voltage automatically discharged when
boost is disabled
• Extensive fault diagnostics

2 Applications
• Backlight for:
– Automotive infotainment
– Automotive instrument clusters
– Smart mirrors
– Heads-up displays (HUD)

3 Description
The LP8864-Q1 is an automotive high-efficiency
LED driver with boost controller. The Four highprecision
current sinks support 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 controller 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. A wide-range
adjustable frequency allows the LP8864-Q1 to avoid
disturbance for AM radio band.
The LP8864-Q1 supports built-in hybrid PWM
dimming and analog current dimming, which reduces
EMI, extends the LED lifetime, and increases the total
optical efficiency.