LTC3109 Linear Technology, LTC3109 Datasheet - Page 14

• Manufacturer Part Number: LTC3109
• Description: Ultralow Voltage Step-Up Converter and Power Manager
• Manufacturer: Linear Technology

LTC3109
applicaTions inForMaTion

0.1
10
1
100
FERROTEC 9500/127/100B, 40mm TEG
C1 = 33nF ,
T1 = COILCRAFT LPR6235-123QML
1:50 RATIO
Typical P
VOUT
Configuration
V
100
600
550
500
450
400
350
300
250
200
150
OUT
50
dT (°K)
0
vs dT for Unipolar
10
= 5V
Typical Input Current vs V
V
IN
V
NOTE: VALUES FOR C
ARE DETERMINED BY THE APPLICATION
Unipolar Configuration
OUT
1:100, C1 = 6.8nF
1:50, C1 = 33nF
1:20, C1 = 68nF
= 3.3V
+
3109 F03f
C
V
IN
IN
100
•
(mV)
10
T1
•
IN
, T1, C1 AND C
10000
1000
1nF
C1
100
10
IN
Figure 3. Unipolar Application
10
for
3109 F03d
330k
V
Typical I
OUT
1000
OUT
V
= 3.3V
SET
OUT
VOUT
Configuration
C1A
C2A
SWA
V
C1B
C2B
SWB
V
VS1
VS2
V
INA
INB
vs V
IN
100
LTC3109
(mV)
GND
V
IN
VSTORE
OUT2_EN
PG00D
V
1:100, C1 = 6.8nF
1:50, C1 = 33nF
1:20, C1 = 68nF
VLDO
for Unipolar
VAUX
V
OUT2
OUT
0.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0
V
10
PG00D
V
3109 F03b
OUT2
OUT2_ENABLE
3109 F03a
2.2µF
1000
Typical R
10µF
VLDO
+
Configuration
IN
60
55
50
45
40
35
30
25
20
15
10
vs V
C
V
5
0
OUT
IN
10
V
100
OUT
(mV)
IN
Typical Efficiency vs V
for Unipolar
1:100, C1 = 6.8nF
1:50, C1 = 33nF
1:20, C1 = 68nF
Unipolar Configuration
1:100, C1 = 6.8nF
1:50, C1 = 33nF
1:20, C1 = 68nF
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3109 F03e
V
IN
100
1000
(mV)
IN
for
3109 F03c
3109f
1000