LT1673 LINER [Linear Technology], LT1673 Datasheet - Page 20

• Manufacturer Part Number: LT1673
• Description: Auto-Polarity, Ultralow Voltage Step-Up Converter
• Manufacturer: LINER [Linear Technology]

LTC3109
TYPICAL APPLICATIONS
20
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0
FERROTEC 9500/127/100B
C1 = 33nF
T1 = COILCRAFT LPR6235-123QML
1:50 RATIO
V
Typical P
OUT
1
= 3.3V
FERROTEC 9500/127/100B
2
THERMOELECTIC
3
VOUT
Confi guration
GENERATOR
4
dT (°K)
vs dT for Unipolar
5
+
–
THERMOELECTRIC
THERMOELECTRIC
Dual-Input Energy Harvester Generates 5V and 2.2V from Either or Both TEGs,
35mV TO 1000mV
25mV TO 500mV
GENERATOR OR
6
THERMOPILE
GENERATOR
7
47μF
T1: COILCRAFT
LPR6235-123QML
8
•
3109 TA06b
1:50
9
Operating at Different Temperatures of Fixed Polarity
T1
Unipolar Energy Harvester Charges Battery Backup
10
•
+
–
+
–
LPR6235-752SML
LPR6235-123QML
33nF
330k
1nF
COILCRAFT
COILCRAFT
•
•
1:100
1:50
•
•
C1A
C2A
SWA
V
C1B
C2B
SWB
V
VS1
VS2
INA
INB
470pF
470pF
4.7nF
LTC3109
1nF
GND
V
VSTORE
OUT2_EN
PG00D
V
*THE VALUE OF THE C
DETEMINED BY THE LOAD CHARACTERISTICS
VLDO
VAUX
V
OUT2
OUT
C1A
C2A
SWA
V
C1B
C2B
SWB
V
VS1
VS2
INA
INB
LTC3109
GND
V
OUT2_EN
VSTORE
2.2V
2.2μF
PG00D
V
VLDO
VAUX
V
OUT2
OUT
1μF
VLDO
PGOOD
OUT
+
2.2V
5V
CAPACITOR IS
+
3109 TA04
4.1V
Li-Ion
BATTERY
FAIRCHILD
FDG328P
PG00D
+
330μF
4V
1μF
NC
C
2.2μF
OUT
*
V
3.3V
OUT
LBO
NTC
V
ADJ
V
VLDO
CC
OUT
LTC4070
GND
NTCBIAS
3109 TA06a
HBO
DRV
NC
NC
NC
3109fa