LED Driver with Current Regulating Switch
Supertex introduced its HV9980 three channel, high voltage, LED driver IC that is well suited for LCD and DLP television applications. It features three channels of peak current mode control that include a switch for regulating the LED current, enabling 95 percent efficiency in DLP television applications. Each channel features an integrated, 160V, 25? MOSFET, individual PWM and linear dimming inputs. The well-controlled transient response of the driver’s peak current mode control enables implementation of local dimming and/or scanning mode applications for LED backlights. An array of ICs can be synchronized to a system clock to eliminate beat frequencies. All three channels of the IC are equipped with short-circuit and over-temperature protection. The driver is RoHS compliant.