Datasheet

LTC3109
20
3109fb
For more information www.linear.com/LTC3109
Typical applicaTions
Dual-Input Energy Harvester Generates 5V and 2.2V from Either or Both TEGs,
Operating at Different Temperatures of Fixed Polarity
GND
1µF
2.2V
LTC3109
5V
V
OUT
VLDO
3109 TA04
C1A
1nF
+
–
+
–
2.2µF
470pF
THERMOELECTRIC
GENERATOR
25mV TO 500mV
THERMOELECTRIC
GENERATOR OR
THERMOPILE
35mV TO 1000mV
4.7nF
470pF
COILCRAFT
LPR6235-752SML
1:100
• •
COILCRAFT
LPR6235-123QML
1:50
• •
V
OUT2
C2A
C1B
C2B
SWB
V
INB
VS1
VS2
SWA
V
INA
V
OUT
VLDO
PG00D PG00D
*THE VALUE OF THE C
OUT
CAPACITOR IS
DETEMINED BY THE LOAD CHARACTERISTICS
V
OUT2_EN
VSTORE
VAUX
C
OUT
*
+
Unipolar Energy Harvester Charges Battery Backup
GND
1µF
LTC3109
3109 TA06a
C1A
33nF
Li-Ion
BATTERY
FAIRCHILD
FDG328P
1nF
330k
T1
1:50
+
–
• •
V
OUT2
C2A
C1B
C2B
SWB
V
INB
T1: COILCRAFT
LPR6235-123QML
VS1
VS2
SWA
V
INA
V
OUT
VLDO VLDO
PGOOD
V
OUT
3.3V
4.1V
NC
2.2µF
47µF
THERMOELECTIC
GENERATOR
FERROTEC 9500/127/100B
330µF
4V
2.2V
PG00D
V
OUT2_EN
VSTORE
VAUX
+
LBO
NTC
V
CC
ADJ
NC
NC
NC
HBO
DRV
NTCBIAS
LTC4070
GND
+
dT (°K)
0
P
OUT
(mW)
3.0
4.0
5.0
8
3109 TA06b
2.0
1.0
2.5
3.5
4.5
1.5
0.5
0
21
43
6 7 9
5
10
FERROTEC 9500/127/100B
C1 = 33nF
T1 = COILCRAFT LPR6235-123QML
1:50 RATIO
V
OUT
= 3.3V
Typical P
VOUT
vs dT for Unipolar
Configuration