LTC3109_15 Datasheet, PDF (19/24 Pages) Linear Technology – Auto-Polarity, Ultralow Voltage Step-Up Converter and Power Manager

Typical Applications
Energy Harvester Operates from Small Temperature Differentials of Either Polarity
LTC3109
TEG
(THERMOELECTRIC GENERATOR)
±30mV TO ±500mV
T1
1:100
••
T2
1:100
••
1nF
470pF
1nF
470pF
C1A
V_OUT2
C2A
V_OUT
SWA VLDO
V_INA
LTC3109
C1B
C2B PG00D
OPTIONAL SWITCHED OUTPUT FOR SENSORS
3.3V
2.2V
2.2µF
+
470µF
LOW POWER
RADIO
µP
SENSOR(S)
SWB
V_INB
VS1
VS2
V_{OUT2_EN}
VSTORE
VAUX
GND
5.25V
+
1µF
C_STORE
3109 TA02
T1, T2: COILCRAFT LPR6235-752SML
Li-Ion Battery Charger and LDO Operates from a Low Level AC Input
50mV TO
300mV RMS
T1
1:100
••
AC 60Hz
T2
1:100
••
T1, T2: COILCRAFT
LPR6235-752SML
1nF
C1A
470pF
V_OUT2
C2A
V_OUT
TO LOAD
1nF
470pF
SWA VLDO
V_INA
LTC3109
C1B
C2B PG00D
2.2V
VLDO
2.2µF
FAIRCHILD
FDG328P
+
4.1V
Li-Ion ^NC
BATTERY
LTC4070*
LBO
HBO NC
NTC
DRV NC
V_CC NTCBIAS NC
ADJ
GND
SWB
V_INB
VS1
VS2
V_{OUT2_EN}
VSTORE
VAUX
GND
*THE LTC4070 IS A PRECISION BATTERY
CHARGER OFFERING UNDERVOLTAGE
PROTECTION, WITH A TYPICAL SUPPLY
1µF
CURRENT OF ONLY 0.45µA
3109 TA03
For more information www.linear.com/LTC3109
3109fb
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