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Part Number
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IS32BL3554 |
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Manufacturer
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ISSI |
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Description
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BOOST TYPE LED DRIVER |
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Published
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Jan 13, 2015 |
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Detailed Description
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IS32BL3554
BOOST TYPE LED DRIVER WITH 4-CHANNEL CURRENT SOURCE
Preliminary Information July 2014
GENERAL DESCRIPTION
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Datasheet
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IS32BL3554
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Overview
IS32BL3554
BOOST TYPE LED DRIVER WITH 4-CHANNEL CURRENT SOURCE
Preliminary Information July 2014
GENERAL DESCRIPTION
The IS32BL3554 is a white LED driver for backlight applications based on a highly efficient boost controller operating over a wide input voltage range of 4.
5V to 33V.
The IS32BL3554 contains four regulated current sources with 1.
5% (Typ.
) current matching between strings for a uniform LED brightness.
Each current source can be programmed via an external resistor to drive from 20mA to 180mA.
A fast slew rate current source allows high frequency and narrow pulse width dimming signals to achieve a very high contrast ratio.
The device operating frequency can be adjusted from 0.
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