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AL8860.lbr
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<?xml version="1.0" encoding="utf-8"?>
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<packages>
<package name="SOT23-5">
<wire x1="1.422" y1="0.81" x2="1.422" y2="-0.81" width="0.1524" layer="21"/>
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<smd name="2" x="0" y="-1.3" dx="0.55" dy="1.2" layer="1"/>
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</package>
</packages>
<symbols>
<symbol name="AL8860">
<description>The AL8860 is a hysteresis mode DC/DC step-down converter,
designed for driving single or multiple series connected LEDs
efficiently from a voltage source higher than the LED voltage. The
device can operate from an input supply between 4.5V and 40V and
provide an externally adjustable output current up to 1A for TSOT25
package and 1.5A for MSOP-8EP package. Depending upon supply
voltage and external components, this converter can provide up to 40
watts output power.
The AL8860 integrates the power switch and a high-side output
current sensing circuit, which uses an external resistor to set the
nominal average output current.
Dimming can be realized by applying an external control signal to the
CTRL pin. The CTRL pin will accept either a DC voltage signal or a
PWM signal.
The soft-start time can be adjusted by an external capacitor from the
CTRL pin to ground. Applying a voltage of 0.2V or lower to the CTRL
pin can turn off the output and make the device enter into standby
state with low current consumption.</description>
<pin name="VIN" x="-17.78" y="5.08" length="middle"/>
<pin name="CTRL" x="-17.78" y="-5.08" length="middle"/>
<pin name="GND" x="0" y="-17.78" length="middle" direction="pas" rot="R90"/>
<pin name="SW" x="17.78" y="-5.08" length="middle" rot="R180"/>
<pin name="SET" x="17.78" y="5.08" length="middle" rot="R180"/>
<wire x1="-12.7" y1="10.16" x2="12.7" y2="10.16" width="0.254" layer="94"/>
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<wire x1="-12.7" y1="-12.7" x2="-12.7" y2="7.62" width="0.254" layer="94"/>
<wire x1="-12.7" y1="7.62" x2="-12.7" y2="10.16" width="0.254" layer="94"/>
<text x="-2.54" y="6.35" size="1.27" layer="95">>NAME</text>
<text x="-11.938" y="-14.986" size="1.27" layer="96">>VALUE</text>
</symbol>
</symbols>
<devicesets>
<deviceset name="AL8860" prefix="U">
<gates>
<gate name="G$1" symbol="AL8860" x="0" y="0"/>
</gates>
<devices>
<device name="" package="SOT23-5">
<connects>
<connect gate="G$1" pin="CTRL" pad="3"/>
<connect gate="G$1" pin="GND" pad="2"/>
<connect gate="G$1" pin="SET" pad="4"/>
<connect gate="G$1" pin="SW" pad="1"/>
<connect gate="G$1" pin="VIN" pad="5"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
</devices>
</deviceset>
</devicesets>
</library>
</drawing>
</eagle>