LN5121 Overview
The LN5121 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 15V can be derived, and from a 2.5V input three white Led’s cab be driven in series. Luminance of the LED’s is controlled by changing the duty cycle of a PWM signal applied to the CE pin.
LN5121 Key Features
- Input voltage range : 2.5V-6V
- Output voltage range : up to 15V externally set-up
- Oscillation frequency : 1.0MHZ±20%
- On resistance : 2.0Ω
- Control : PWM control
- Stand-by Curren
