Datasheet

LTC3129
26
3129fa
For more information www.linear.com/LTC3129
Typical applicaTions
Energy Harvesting Converter Operates from a Variety of Weak Sources
Solar Powered Converter Extends Battery Life in Low Power 3V Primary Battery Applications
Percentage of Added Battery Life vs Light Level and Load
(PowerFilm SP4.2-37, 30sq cm Panel)
LIGHT LEVEL (Lx)
100
ADDED BATTERY LIFE (%)
1000
100
10
1
3129 TA09b
10,000
1,000
AVERAGE LOAD = 165µW
AVERAGE LOAD = 330µW
AVERAGE LOAD = 660µW
AVERAGE LOAD = 1650µW
AVERAGE LOAD = 3300µW
V
CC
BST1
V
OUT
V
OUT
5V
SW1
SW2
LTC3129
22nF
BST2
PGOOD
FB
GND
V
CC
V
IN
BAS 70-05
UVLO = 3.3V
RUN
22nF
4.7µH
10µF
3.32M
2.2µF
3129 TA07
PGND
MPPC
PWM
NC
NC
100µF
CERAMIC
1.02M
4.99M
3.01M
BAS 70-06
INPUT SOURCES:
• RF
• AC
• PIEZO
• COIL-MAGNET
10pF
22pF
BST1
V
OUT
SW1 SW2
LTC3129
22nF
3.20V
BST2
PGOOD
FB
GND
V
CC
V
CC
V
IN
RUN
MPPC
PWM
NC
NC
22nF
3.3µH
TOKO DEM2812C
10pF
2.2µF
V
OUT
BAT54
470µF
6.3V
74LVC2G04
3129 TA09
PGND
FDC6312P
DUAL PMOS
PV PANEL
SANYO AM-1815
OR
PowerFilm SP4.2-37
4.7µF
V
IN
UVLO = 3.7V
4.99M
4.22M
2.43M
D1 D2
S2S1
G2
CR2032
3V COIN CELL
V
OUT
3V TO 3.2V
G1
2.43M
22µF
R4
2.43M
15pF
2.2µF
+