The ISL97636A is an integrated power LED driver thatcontrols 6 channels of LED current for LCD backlightapplications. The ISL97636A is capable of driving typically54 (6x9) pieces of 3.5V/30mA or 60 (6x10) pieces of3.2V/20mA LEDs. The ISL97636A’s contains 6 channels ofvoltage controlled current sources with typical currentsmatching of ±1%, which compensate for the non-uniformityeffect of forward voltages variance in the LED stacks. Tominimize the voltage headroom and power loss in the typicalmulti-strings operation, the ISL97636A features a dynamicheadroom control that monitors the highest LED forwardvoltage string and uses its feedback signal for output regulation.
猜您喜欢
评论