AIC1628 查看數據表（PDF） - Analog Intergrations
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AIC1628 Datasheet PDF : 7 Pages
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AIC1628
APPLICATION EXAMPLES (CONTINUED)
R4
100K
Q1
2N2907
L1
220µH
Sumida CDR105
1N5819
D1
+
R5
72K
VOUT
+5V
100mA
Efficiency vs Load Current
85
-48V to +5V
80
+
C1
+ 1µF
C3
VIN
-48V
12V
0.047µF
C4
VIN
CL
VREF
DHI
SHDN
DLOW
FB
GND
AIC1628
C5
2SK940
20K
0.1µF
C6
75
1N3906
Q2
70
65
R3
20K
60 0
50
100
150
Load Current (mA)
Fig. 4 Telecom +5V supply
47µF
C5 +
C2
1N5819
D2
D3
VIN
+
+5V
95
C1
100µF
VIN
CL
VREF
SHDN
DHI
DLOW
FB
GND
AIC1628
+
C4
1µF
2SK1463
Q1
33µH
D1
1N5820
*L1
C3
330µF
VOUT
+ +3.3V
2A
R2
R1
20K
34K
*MPP Core
90
85
80
75
10
Efficiency vs Load Current
100
1000
Load Current (mA)
Fig. 5 5V to 3.3V step-down converter
6
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