LB1102 is a high efficiency DC-DC step up converter, compact white LED driver controller for 3~9 inches LCD panel of portable electronics. It operates over a broad input voltage range from 2.5V to 6V. The operation frequency is fixed 1250KHz. By the help of current mode control and internal compensation, the chip can work under continuous and discontinuous mode.
The step-up converter topology works in a discontinuous mode to allow the use of a small inductor and ease of loop stability that result in a high efficiency and low cost module. An external Pulse Width Modulation (PWM) signal or external voltage can be used for the dimming control function.