0
ACTIVE
Number of channels |
4 |
Topology |
Boost with Current Sink, SEPIC Controller |
Rating |
Automotive |
Operating temperature range (°C) |
-40 to 125 |
Vin (min) (V) |
3 |
Vin (max) (V) |
48 |
Vout (min) (V) |
0 |
Vout (max) (V) |
48 |
Iout (max) (A) |
0.8 |
Iq (typ) (mA) |
20 |
Switching frequency (max) (kHz) |
2200 |
Features |
Adjustable Switch Frequency, Boost Sync, Current Derating, Enable/Shutdown, Fault Detection, Fault Diagnostic, Global dimming, Hybrid Dimming/Phase Shift, I2C control, LED Open Detection, LED Short to Ground Detection, LED Shorted Detection, Load Disconnect During Shutdown, Power-Line FET, Soft Start, Spread Spectrum, Synchronization Pin, Thermal shutdown |
HTSSOP (DCP)-38-62.08 mm² 9.7 x 6.4
The LP8864-Q1 is an automotive high-efficiency LED driver with boost controller. The Four high-precision 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.
WELL LINK CHIPS GROUP CO.,LIMITED FLAT/RM 1802 BEVERLY HOUSE 93-107 LOCKHART ROAD WANCHAI HK
