GENERAL DESCRIPTION
The IS31LT3948 is a PFM step-up DC-DC converter designed for driving the white LED arrays for large size LCD panel backlighting applications. It can deliver stable constant output current from a few milliamps up to 2A, programmed via an external resistor.
The IS31LT3948 utilizes a control scheme in which the output is automatically adjusted to the optimum output voltage for the system, maximizing the efficiency. Furthermore, the control scheme is inherently stable removing the need to provide additional loop compensation.

FEATURES
● Wide input voltage range: 5V~100V
● Constant current output limited only by external
   component selection (Note)
● No loop compensation required
● Internal over-voltage protection
● Internal over-temperature protection
● Operating temperature range -40°C to +85°C
   (IS31LT3948-GRLS2-TR)
● Operating temperature range -40°C to +125°C
   (IS31LT3948-GRLS4-TR)
● SOP-8 package

APPLICATIONS
● TV monitor backlighting
● Notebook
● Automotive
● Street lamp
● LED lighting