Datasheet

LTC3108-1
19
31081fb
For more information www.linear.com/LTC3108-1
Supercapacitor Charger and LDO Powered by a Solar Cell
(Uses External Charge Pump Rectifiers)
Dual Output Converter and LDO Powered by a Thermopile Generator
31081 TA04
C1
HONEYWELL
Q313
THERMOPILE
C2
SW
VS2
VS1
VSTORE
V
OUT2
PGOOD
VLDO
PGD
VLDO
V
OUT
V
OUT2_EN
LTC3108-1
VAUX GND
2.2µF
150µF
6.3V
2.2µF
4.7nF
T1: COILCRAFT LPR6235-123QML
2.2V
4.5V
T1
1:50
330pF
220µF
+
+
V
OUT
499k
31081 TA03
C1
SOLAR
CELL*
* 2
"
DIAMETER MONOCRYSTALLINE CELL
LIGHT LEVEL ≥ 900 LUX
T1: COILCRAFT LPR6235-253PML
C2
SW
VS2
VS1
VSTORE
V
OUT2
VLDO
PGD
VLDO
V
OUT
V
OUT2_EN
LTC3108-1
VAUX
VAUX
VAUX
GND
2.2µF
4F*
4.7µF
0.022µF
2.2V
*TAIYO YUDEN
PAS1020LA3R0405
BAS31
3.0V
T1
1:20
330pF
220µF
+
–
+
V
OUT
499k
+
Typical applicaTions
ILLUMINANCE (LUX)
100
10
I
VOUT
(µA)
100
1000
10,000
1000 10,000 10,0000
31081 TA03b
INCANDESCENT LIGHT
FLOURESCENT LIGHT
OUTDOOR
LIGHT (CLOUDY)
I
VOUT
vs Illuminance
(2
"
Diameter Monocrystalline Cell)