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IT1611 －
High-Efficiency 40V 1.2A DC/DC LED Driver
Description
IT1611 is a high efficiency, constant current, DC/DC converter and can
be used for buck and boost application circuit. With the supply voltage
source of 40V, this converter can drive up to 8 LEDs (depending on its
forward voltage drop) connected in series. The maximum output current
of IT1611 can be configured by an external resistor, and LED dimming
can be controlled through DIM pin by using either a DC voltage or a PWM
signal at DIM pin. IT1611 employs hysteretic control scheme without any
compen- sation components, thus very fast load transient response can
be achieved. Moreover, the exposed pad of MSOP-8L package enhances the
thermal dissipation so that large driving current can be handled.
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Features
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Up to 1.2A
constant current output
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Better than
5% current accuracy
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Wide 6V to
40V operating input range
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95%
Efficiency @ VIN=15V, 350mA, 4-LED
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Lightening
up to 8 LEDs in series
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PWM/DC
input dimming control
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Built-in
soft-start / under voltage lock-out / LED open/short circuit protection
functions
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Only 4
external components required
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Available
in MSOP-8 and SOT89-5L with thermal PAD
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Technology
Information:
 Data Sheet
Package:
MSOP-8
SOT89-5L
Other Products
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