Supertex has introduced a six-channel LED driver that provides protection from faulty LED strings with patent-pending technology. 

HV9957 combines a switch-mode boost converter and six low dropout, linear current regulators to deliver high efficiency and precise current control in an LED driver.

The IC can drive up to six strings of LEDs at 30mA each, which is well-suited for battery-powered LED backlighting applications. 

Temperature-triggered fault protection combined with an 'outlier' approach to indentify faulty strings overcomes problems inherent with ordinary fault protection. 

Faulty strings are turned off only when absolutely necessary. HV9957 provides protection from fault conditions such as over- and under-voltage supply, over-current, and over-temperature. 

When a fault is detected, the affected LED string is removed from feedback and the rest of the strings continue normal operation.
 
HV9957 is available in a 24-lead QFN package (HV9957K7-G).  

www.supertex.com