What this LED driver does — 2.2 MHz boost with integrated switches
The LT3486IFE#PBF is a dual-channel, fixed-frequency boost LED driver from Analog Devices rated for backlight and camera flash applications. Its 2.2 MHz switching frequency allows the use of small inductors and ceramic capacitors, keeping the total solution footprint compact for space-constrained displays and flash modules. The two independent channels each integrate a 1.3 A switch, so no external MOSFET is needed for typical 10-LED series strings. PWM dimming is supported directly on both channels, enabling wide brightness control without audible noise from the inductor.
Operating from 2.5 V to 24 V, this driver covers single-cell Li-ion through nominal 12 V and 24 V automotive/industrial buses. The 16-TSSOP package with exposed pad (16-TSSOP-EP) requires a thermal via pattern under the pad to keep junction temperature within the 125°C ceiling at full 1.3 A switch current.