LTC1693-1CS8 查看數據表（PDF） - Linear Technology
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LTC1693-1CS8 Datasheet PDF : 20 Pages
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TYPICAL APPLICATIONS
5V to 12V Boost Converter
R2
R1
D1
13k
7.5k
BAT85 1%
1%
VCC = 5V
C2
0.1µF
+
C3
4.7µF
8
1 LTC1693-3
7
C1
3
680pF
4
L1*
D2
22µH 1N5819
Q1
BS170
+
CL
47µF
VOUT
12V
50mA
INDUCTOR PEAK CURRENT ≈ 600mA
R2, C1 SET THE OSCILLATION FREQUENCY AT 200kHz
R1 SETS THE DUTY CYCLE AT 45%
EFFICIENCY ≈ 80% AT 50mA LOAD
*SUMIDA CDRH125-220
1693 TA06a
LTC1693
Output Voltage
18
VCC = 5V
50mA LOAD
16
14
12
10
8
6
35 40 45 50 55
DUTY CYCLE (%)
60 65
1693 TA06b
Efficiency
100
VCC = 5V
50mA LOAD
90
80
70
60
50
10
11 12 13 14 15 16
OUTPUT VOLTAGE (V)
1693 TA06c
15
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