LN2117 Datasheet (natlinear) - Step-up DC/DC Converter

LN2117, Step-up DC/DC Converter - Backlight Driver

The LN2117 Series is a fixed frequency, constant current step-up DC/DC converter ideal for driving LEDs used in backlighting applications on cellular phones, PDAs and digital cameras etc.

Output voltage of up to 20V can be derived, and from a 3.2V input four white Led’s cab be driven in series or a

LN2117 Features

* Input voltage range 2.5V

* 6V

* Output voltage range up to 20V

* Oscillation frequency 1MHz±20%

* Efficiency 88%(When driving 3 white LEDs in series VIN=3.6V ILED=20mA)

* Control PWM control

* Stand-by Current ISTB=1.0uA(MAX)

* Load capacitor 0.22u