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AOZ1081AI Datasheet(PDF) 6 Page - Alpha & Omega Semiconductors

Part # AOZ1081AI
Description  EZBuck??1.8A High Efficiency
PDF  16 Pages
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Manufacturer  AOSMD [Alpha & Omega Semiconductors]
Direct Link  http://www.aosmd.com
Logo AOSMD - Alpha & Omega Semiconductors

AOZ1081AI Datasheet(HTML) 6 Page - Alpha & Omega Semiconductors

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AOZ1081
Rev. 1.1 April 2009
www.aosmd.com
Page 6 of 16
Typical Performance Characteristics
Circuit of Figure 1. TA = 25°C, VIN = VEN = 12V, VOUT = 3.3V unless otherwise specified.
Normalized Switching Frequency vs. VIN
1.04
1.03
1.02
1.01
1.00
0.99
0.98
0.97
0.96
46
8
10
12
14
16
VIN (V)
46
8
10
12
14
16
VIN (V)
Normalized Feedback Voltage Variation vs. VIN
1.05
1.04
1.03
1.02
1.01
1.00
0.99
0.98
0.97
0.96
0.95
0
0.2
0.4
0.6
VOUT = 7.2V
VOUT = 3.6V
0.8
1.0
1.2
1.4
1.6
1.8
2.0
Load Current (A)
Efficiency (VIN) vs. Load Current
100
95
90
85
80
75
Digital Dimming vs. LED Current
200Hz PWM Signal on EN Pin
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
102030405060708090
100
PWM Duty Cycle (%)



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