OZ526 назначение, описание, схема включения

Микросхема OZ526, Производитель- O2micro®

FEATURES OZ526
• High frequency DC/DC power converter for LEDs
• Integrated power MOSFET
• Integrated LED current balance control circuit
• User-defi ned operation frequency
• Drives 1 or 2 strings
• External PWM and Analog dimming control
• Converter output over-voltage protection
• Internal power MOSFET over-current protection
• Over-current protection for each string
• Output short circuit detection
• Open diode and thermal protection

GENERAL DESCRIPTION OZ526
The OZ526 is a high effi ciency DC/DC controller with an integrated power MOSFET
that drives one string or two LED strings in parallel confi guration, with multiple LEDs
connected in series. It is targeted for netbook and PND backlight applications.
OZ526 provides two LED current sense inputs in an “OR” confi guration for improved
backlight reliability. This allows the backlight to remain functioning in the event that
any string(s) is damaged during normal operation. The controller receives an external
Pulse Width Modulation (PWM) signal for the dimming control function.

Схема включения OZ526

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OZ99XX O2Micro
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