Datasheet Summary
A8518 and A8518-1
Wide Input Voltage Range, High-Efficiency, Fault-Tolerant LED Driver
Features
AND BENEFITS
- Automotive AEC-100 qualified
- Fully integrated 42 V MOSFET for boost converter
- Fully integrated LED current sinks
- Withstands surge input to 40 VIN for load dump
- Operates down to 3.9 VIN (max) for idle stop
- Drives two strings of LEDs
- Maximum output voltage 40 V
- Up to 11 white LEDs in series
- Drive current for each string is 200 mA
- Fixed 2.15 MHz boost switching frequency
- Dithering of boost switching frequency to reduce EMI
(A8518 only)
- Extremely high LED contrast ratio
- 10,000:1 using PWM dimming alone
- 100,000:1 when bining PWM and analog dimming
-...