一、Features
l 2.5V to 5.5V Input Voltage
l Drivers up to 7 Series WLEDs
l Low 250mV Feedback Voltage
l 1.2MHz Fixed Switching Frequency
l Internal 1.6A Switch Current Limit
l Internal Compensation
l Thermal Shutdown
l Over Voltage Protection
l Dimming with wide Frequency Range
l Available in a 6-pin SOT-23 package
二、Applications
l Camera Flash White LED
l PDA LED back light
l Digital still cameras
三、General Description
The TX5122 is a step-up converter designed for driving up to 7 series white LED's from a single cell Lithium Ion battery. Its low 250mV feedback voltage reduces power loss and improves efficiency.
Optimized operation frequency can meet the requirement of small LC filters value and low operation current with high efficiency. Internal soft start function can reduce the inrush current. Tiny package type provides the best solution for PCB space saving and total BOM cost.
