LT1673 LINER [Linear Technology], LT1673 Datasheet - Page 19

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

TYPICAL APPLICATIONS
(THERMOELECTRIC GENERATOR)
300mV RMS
50mV TO
T1, T2: COILCRAFT
LPR6235-752SML
AC
±30mV TO ±500mV
Energy Harvester Operates from Small Temperature Differentials of Either Polarity
60Hz
T1, T2: COILCRAFT LPR6235-752SML
TEG
•
•
1:100
1:100
Li-Ion Battery Charger and LDO Operates from a Low Level AC Input
T1
T2
•
•
470pF
470pF
1nF
1nF
•
•
1:100
1:100
T1
T2
C1A
C2A
SWA
V
C1B
C2B
SWB
V
VS1
VS2
INA
INB
•
•
LTC3109
GND
V
470pF
470pF
VSTORE
OUT2_EN
1nF
1nF
PG00D
V
VLDO
VAUX
V
OUT2
OUT
C1A
C2A
SWA
V
C1B
C2B
SWB
V
VS1
VS2
INA
INB
2.2V
LTC3109
3109 TA03
GND
V
VSTORE
2.2μF
OUT2_EN
PG00D
V
VLDO
VLDO
VAUX
V
OUT2
OUT
1μF
FAIRCHILD
FDG328P
5.25V
3.3V
2.2V
OPTIONAL SWITCHED OUTPUT FOR SENSORS
2.2μF
*THE LTC4070 IS A PRECISION BATTERY
CHARGER OFFERING UNDERVOLTAGE
PROTECTION, WITH A TYPICAL SUPPLY
CURRENT OF ONLY 0.45μA
+
1μF
4.1V
Li-Ion
BATTERY
+
μP
TO LOAD
3109 TA02
C
NC
STORE
+
470μF
LBO
NTC
V
ADJ
CC
LTC4070*
GND
NTCBIAS
LOW POWER
SENSOR(S)
RADIO
HBO
DRV
NC
NC
NC
LTC3109
19
3109fa