Led7707 Main Features; Boost Section; Backlight Driver Section - STMicroelectronics LED7707 Application Note

LED7707 main features

1 LED7707 main features
1.1

Boost section

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4.5 V 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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250 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 load
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Programmable soft-start
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Programmable OVP (overvoltage 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 85 mA maximum current capability (adjustable)
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Up to 10 WLEDs per row
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Parallelable rows for higher current
● Row disable option
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Less than 10 µs minimum dimming time
● ±2% current matching between rows
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LED failure (open and short-circuit) detection
4/17 Doc ID 14893 Rev 1
AN2810