LED Driver Integrates Current-Regulating Switch

Supertex’s HV9980 is a three-channel, high-voltage, LED driver suited for both LCD and DLP television applications. The HV9980 features three channels of peak-current-mode control that each include a switch for regulating the LED current, enabling 95% efficiency in DLP television applications. Each channel features an integrated, 160-V, 25-Ω MOSFET and individual PWM and linear-dimming inputs.

A large array of HV9980 ICs can be synchronized to a system clock to eliminate beat frequencies. The HV9980 is available in a 24-lead SOW package (HV9980WG-G). Pricing is $1.71 each for the HV9980WG-G in 1000-unit quantities.