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
