Packaging information
| Package | Pins HTSSOP (DCP) | 38 |
| Operating temperature range (°C) -40 to 125 |
| Package qty | Carrier 2,000 | LARGE T&R |
Features for the LP8866S-Q1
- 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 3 V to 48 V
- Six high-precision current sinks
- Up to 150-mA DC current for each current sink
- Current matching 1% (typical)
- Dimming ratio 32 000:1 using 152-Hz 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 48-V
VOUT boost or SEPIC DC/DC controller
- Switching frequency 100 kHz to 2.2 MHz
- 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
Description for the LP8866S-Q1
The LP8866S-Q1 is an automotive high-efficiency LED driver with boost controller. The Six 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 LP8866S-Q1 to avoid disturbance for AM radio band.
The LP8866S-Q1 supports built-in hybrid PWM dimming and analog current dimming, which reduces EMI, extends the LED lifetime, and increases the total optical efficiency.