Product Summary

The iW7023 is a high efficiency driver for LEDs. It is designed for use with mid-size LCD panels that use arrays of LEDs as a backlight source. The iW7023 is able to communicate with up to one external step-up or step-down PWM DC-DC converter to drive up to 16 separate strings of multiple series-connected LEDs. The applications of the iW7023 include Edgelit Local Dimming for LED TVs, Direct and Segment-Edge LED Backlit LCD TVs, LCD Public Information Displays.

Features

iW7023 features: (1)16-Channel LED Driver, 90V max LED Voltage Capable at 150mA Average, 240mA peak Current/Channel, 150mA max in dimming mode; 240mA max in scanning mode and in dimming mode with 60% adaptive-switch mode; (2)Patented Adaptive-Switch Mode LED Driving Scheme to Maximize Channel Efficiency; (3)2 Controllers for External DC/DC Converters - Independent Dynamic Voltage Control of Each DC/DC; (4)SPI Interface for High-Bandwidth Control and Local Dimming ; (5)LED Brightness Dimming - Local, Scanning and 3D Game Mode, PWM Dimming Range - 1% to 99.98% at 12 bits; 1% to 99% at 10 bits; PWM Dimming Frequency - NTSC , PAL and 3D Game Modes; (6)Sync Function allows Synchronization with Additional iW70xx Products; (7)LED Fault Protection - Open and Short Circuit - Cycle-by-Cycle Protection; (8)Over-temperature and UVLO.

Diagrams

iW7023 block diagram