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LT1674 датащи(PDF) 14 Page - Linear Technology

номер детали LT1674
подробное описание детали  Auto-Polarity, Ultralow Voltage Step-Up Converter
PDF  24 Pages
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производитель  LINER [Linear Technology]
домашняя страница  http://www.linear.com
Logo LINER - Linear Technology

LT1674 датащи(HTML) 14 Page - Linear Technology

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LTC3109
14
3109fa
APPLICATIONS INFORMATION
GND
10μF
LTC3109
3109 F03a
C1A
C1
1nF
330k
T1
••
VOUT2
VOUT2
C2A
C1B
C2B
SWB
VINB
VS1
VOUT
SET
VS2
SWA
VINA
VOUT
VLDO
VLDO
VOUT
2.2μF
CIN
VIN
PG00D
VOUT2_EN
PG00D
VOUT2_ENABLE
NOTE: VALUES FOR CIN, T1, C1 AND COUT
ARE DETERMINED BY THE APPLICATION
VSTORE
VAUX
+
COUT
+
Figure 3. Unipolar Application
Typical IVOUT vs VIN for Unipolar
Configuration
Typical Efficiency vs VIN for
Unipolar Configuration
VIN (mV)
10
10
100
1000
10000
100
1000
3109 F03b
1:100, C1 = 6.8nF
1:50, C1 = 33nF
1:20, C1 = 68nF
VOUT = 3.3V
VIN (mV)
10
20
30
40
100
1000
3109 F03c
10
0
60
50
15
25
35
5
55
45
1:100, C1 = 6.8nF
1:50, C1 = 33nF
1:20, C1 = 68nF
Typical Input Current vs VIN for
Unipolar Configuration
Typical RIN vs VIN for Unipolar
Configuration
VIN (mV)
10
200
300
400
100
1000
3109 F03d
100
0
600
500
150
250
350
50
550
450
1:100, C1 = 6.8nF
1:50, C1 = 33nF
1:20, C1 = 68nF
VIN (mV)
10
1.0
2.0
100
1000
3109 F03e
0
4.0
3.0
1.5
0.5
3.5
2.5
1:100, C1 = 6.8nF
1:50, C1 = 33nF
1:20, C1 = 68nF
dT (°K)
100
0.1
1
10
10
3109 F03f
VOUT = 5V
VOUT = 3.3V
FERROTEC 9500/127/100B, 40mm TEG
C1 = 33nF,
T1 = COILCRAFT LPR6235-123QML
1:50 RATIO
Typical PVOUT vs dT for Unipolar
Configuration



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