AN2809

LED7706 - main features

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LED7706 - main features

1.1

Boost section

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4.5- to 36-V input voltage range

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Internal power MOSFET

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Internal +5 V LDO for device supply

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Up to 36-V output voltage

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Constant frequency peak current-mode control

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200-kHz to 1-MHz adjustable switching frequency

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External sync for multi-device application

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Pulse-skip power-saving mode at light loads

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Programmable soft-start

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Programmable OVP protection

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Single ceramic output capacitor

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Non-latched thermal shutdown

1.2

Backlight driver section

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Six rows with 30 mA maximum current capability (adjustable)

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Up to 10 white LEDs per row

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Row disabling option

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Less than 500 ns minimum dimming time (1% minimum dimming duty-cycle at 20 kHz

dimming frequency)

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±2.0% current matching between rows

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LED failure (open and short circuit) detection