BL8091
TYPICAL PERFORMANCE CHARACTERISTICS
(Vin=12V, Vout=3.3V, L=10uH, Cin=10uF, Cout=22uF, TA=25C, unless otherwise stated)
Efficiency (Vout=3.3V)
Vout Vs. Iout
100
80
60
40
20
0
3.5
3
2.5
2
1.5
1
Vin=5V
Vin=12V
Vin=4.5V
Vin=4.5V
Vin=5V
Vin=12V
0.5
0
1
10
100
1,000
0
0.5
1
1.5
2
Iout (mA)
Iout (A)
Vout Vs. Vin
Zero Load Operating Current Vs. Vin
4
1.4
1.2
1
3.5
3
2.5
2
0.8
0.6
0.4
0.2
0
1.5
1
IOUT=300mA
Iq (mA)
0.5
0
4
6
8
10
12
14
16
18
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18
Vin (V)
Vin (V)
Switching waveform Vin=18V, Iout=0
Switching waveform Vin=18V, Iout=2A
VIN
VOUT
VIN
VOUT
I_L
SW
SW
I_L
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