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AOZ1300AI Datasheet(PDF) 8 Page - Alpha & Omega Semiconductors

Part # AOZ1300AI
Description  Programmable 4A Power Distribution Switch
PDF  12 Pages
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Manufacturer  AOSMD [Alpha & Omega Semiconductors]
Direct Link  http://www.aosmd.com
Logo AOSMD - Alpha & Omega Semiconductors

AOZ1300AI Datasheet(HTML) 8 Page - Alpha & Omega Semiconductors

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AOZ1300
Rev. 1.
3 August 2008
www.aosmd.com
Page 8 of 12
Current Limit vs. Rset @ 5.5V
0
100
200
300
400
500
600
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Current Limit (A)
Current Limit vs. Rset @ 3.6V
0
100
200
300
400
500
600
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Current Limit (A)
Current Limit vs. Rset @ 2.5V
0
100
200
300
400
500
600
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Current Limit (A)
The output capacitor acts in a similar way. A small 0.1µF
capacitor prevents high-frequency noise from going into
the system. Also, the output capacitor has to supply
enough current for a large load that it may encounter
during system transients. This bulk capacitor must be
large enough to supply fast transient load in order to
prevent the output from dropping.
Current Limit Setting
The AOZ1300 features internal current-limiting circuitry
with a maximum programmable value of 4.0A. This
current limit remains in effect throughout the input
supply-voltage range. The current limit is program by
using external resistor connected to the ISET pin. The
current-limit adjustment resistor range is from 70k
Ω to
600k
Ω.
Slew Rate Setting
Slew rate is set by changing the capacitor value on the
Slew pin of the device. A capacitor connected between
this pin and ground will reduce the output slew-rate. The
capacitor requires a 6.3V rating or greater. The capacitive
range is 0.001µF to 0.1µF. Please see graph for Output
Slew Rate Adjustment vs. Capacitance.
Output Slew Rate Adjustment
0.000
10.000
20.000
30.000
40.000
50.000
60.000
70.000
80.000
0
0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.1
Capacitance (µF)
5.5V
3.6V
2.5V
Output Slew Rate Adjustment
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
4.00
01
2
3
45
Capacitance (nF)
5.5V
3.6V
2.5V



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