Part Number: OZ9956B
Function: Six String LED Controller
Package: 20 QFN Type
Manufacturer: O2Micro International
OZ521 ~ OZ9998H Information
OZ9956B is a high efficiency, DC/DC controller that drives up to six (6) strings of LEDs in parallel configuration, with multiple LEDs in each string connected in series. It is targeted for notebook/netbook applications.
It provides six (6) LED current sense inputs in an “OR” configuration for improved backlight reliability. This allows the backlight to remain functional in the event that any string (s) is damaged during normal operation.
OZ9956B can receive either an analog signal or an external Pulse Width Modulation (PWM) signal for the dimming control function. This IC provides an integrated circuit to balance the current flow through each LED string, as well as, the integrated power MOSFET.OZ9956B
1. High frequency DC/DC power converter controller
2. Drives up to 6 strings in parallel
3. Intergrated LED current balance control circuit
4. Over-voltage and over-current protection
Other data sheets are available within the file: GB98A, OZ521, OZ522, OZ523, OZ524