LP8863-Q1 LP8863-Q1 用于汽车照明的低 EMI、高性能 6 通道 LED 驱动器

描述The LP8863-Q1 is an automotive high-efficiency LED driver with boost controller. The sixhigh-precision current sinks support phase shifting that is automatically adjusted based on thenumber of channels in use. Current sink brightness can be controlled individually and globallythrough the SPI or I2C interface; brightness can also be globally controlled with PWM input.The boost controller has adaptive output voltage control based on the headroom voltagesof the LED current sinks. This feature minimizes the power consumption by adjusting the voltage tothe lowest sufficient level in all conditions. A wide-range adjustable frequency allows theLP8863-Q1 to avoid disturbance for AM radio band. The LP8863-Q1 supports built-in hybrid PWM and current dimming, which reduces EMI,extends the LED lifetime, and increases the total optical efficiency.特性Qualified for Automotive Applications AEC-Q100 Qualified With the Following Results: Device Temperature Grade 1: –40°C to +125°C Ambient OperatingTemperature Input Voltage Operating Range 3 Vto 48 VSix High-Precision Current SinksCurrentMatching 1% (typical) Dimming Ratio 32 000:1 Using 152-Hz LED Output PWMFrequencyUp to 16-bit LED Dimming Resolution With SPI, I2C, or PWMInputAutomatically Detects Used LED Strings and AdjustsLED-Channel Phase ShiftIndependent Current Control forEach Channel Hybrid PWM and Current Dimming FunctionUp to 47-VVOUT Boost or SEPIC DC-DC Controller Switching Frequency 300 kHz to 2.2 MHzBoost SpreadSpectrum for Reduced EMI Boost Sync Input to Set BoostSwitching Frequency From an External ClockIntegrated Charge Pump Supports LowVIN Conditions Such as Cold CrankOutput VoltageAutomatically Discharged When Boost isDisabledExtensive Fault Diagnostics All trademarks are the property of their respective owners.