OZ527 назначение, описание, схема включения

Микросхема OZ527, Производитель- O2micro®

FEATURES OZ527
• High power DC/DC power converter
• Integrated Power N-Channel MOSFET
• Integrated LED current balance control circuit
• Drives up to 6 strings in parallel
• User-defi ned string selection
• Time-shift PWM phase dimming control for low audible noise
• Operation frequency synchronization
• LED open string protection
• Output short circuit or open diode protection
• LED short circuit protection
• MOSFET over-current protection
• Shutdown under abnormal condition protection
• Thermal protection
• LED fault status output

GENERAL DESCRIPTION OZ527
The OZ527 is a high effi ciency DC/DC controller that drives up to six strings con-
nected in parallel confi guration with multiple LEDs in each string connected in series.
OZ527 provides 6 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.
OZ527 supports external Pulse Width Modulation (PWM) dimming control.

Схема включения OZ527

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OZ99XX O2Micro
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