aur6110 sot-23-6led背光驅(qū)動芯片

東泰誠電子

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aur6110 sot-23-6  led背光驅(qū)動IC

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description
the aur6110 is a high-efficiency and low-power led
driver for battery operated device applications. it is designed
with a switch-mode step-up voltage conversion structure using
an internal power mos switcher. the driver provides a
constant led driving current with a feedback sensing circuit.
the optimized power conversion is provided using an internal
peak-current mode voltage-boost control loop design.
the chip includes under voltage lock-out (uvlo),
over-voltage detection (ovd) and thermal-shutdown
(tsd) circuits to ensure reliable chip operations. a
dynamic soft-start function is designed for reducing battery
inrush-current during chip power-up.
the low-power cmos circuit with minimized operating current
can drive up to 4 series white leds in series (maximum
number of leds dependent on led forward voltages) from a
signal cell lithium ion battery and driver 3s8p wleds light bar
from input voltage of 5v for lcd display back-lighting.
an optimized high-frequency built-in clocking enables
applications of using a small lc filter for many battery
powered products that requires only 5 external
components. tiny package of tsot23-6l provides a best
solution for space saving portable integration with a minimized
total bom cost.

features
vin operating range : 2.7v to 5.5v
maximum output voltage up to 15v
dimming with frequency range of 100 to
1khz
soft-start function for inrush current control
over voltage and peak switching-current
detection
minimize the external components
small lc filter
build-in power mos switch
internal thermal shut-down
tsot-23-6 package, rohs compliant and 100%
green product

applications
7”lcd led backlight
mobile phone led backlight
mp3/pda/dsc led backlight
battery boost voltage converter
battery operated led lighting