The LM3699 is a three-string, high-efficiency, PWM-controlled power source for display
backlight or keypad LEDs in smartphone handsets. The high-voltage inductive boost converter with
integrated 1-A, 40-V MOSFET provides the power for three series LED strings. The boost output
automatically adjusts to LED forward voltage to minimize headroom voltage and effectively improve
The ILOW terminal provides a method to quickly reduce LED brightness during camera flash
The LM3699 has integrated overvoltage, overcurrent, and thermal protection.
The device operates over a 2.7-V to 5.5-V input voltage range and a −40°C to 85°C
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