Part Number: OZ9998B, OZ9998BGN
Function: Four String High Power LED Controller
Package: 16 E-TSSOP, PDIP, QFN, SOP, Lead-free
Manufacturer: O2Micro
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Description
OZ9998B is a high effi ciency DC/DC controller that drives up to eight strings connected
in parallel confi guration with multiple LEDs in each string connected in series.
It provides four (4) LED current sense inputs in an “OR” confi guration to improve
backlight reliability. This allows the backlight to remain functioning in the event that a
string(s) is damaged during normal operation.
A four-string high power LED controller is a device used to control and regulate the power supply to high-power LEDs arranged in four separate strings or channels. It is typically designed for applications where precise control over multiple LED strings is required, such as in architectural lighting, stage lighting, or large-scale displays.
Features
• High power DC/DC boost converter controller
• Drives up to 4 strings in parallel, up to 160mA per string
• Integrated LED current balance control circuit
• External PWM dimming control
• Time-shift PWM phase dimming control for low audible noise
• MOSFET over-current protection
• LED short circuit and open string protection
• Thermal protection
• LED fault status output
Applications:
• LCD Monitor
• LCD TV
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OZ9998B Datasheet
