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

LTC3109
Typical Application
Unipolar TEG Energy Harvester for Low Resistance/High Current Inputs,
Using External Charge Pump Rectifiers
70mV TO 1V
COILCRAFT
LPR6235-253PML
1:20
+
1.0µF
••
1nF
VAUX
BAS31
C1A
V_OUT2
LTC3109
C2A
SWA
V_INA
V_OUT
C1B
VLDO
SWITCHED V_OUT GOES HIGH
WHEN PGOOD IS HIGH
V_OUT2
0.1µF
3.3V
+
V_OUT
C_OUT
2.2V
VLDO
2.2µF
VAUX
C2B _PG00D
SWB
V_INB
VS1
VS2
V_{OUT2_EN}
VSTORE
VAUX
GND
PG00D
+
10µF
C_STORE
3109 TA05
I_VOUT vs V_IN
16
1:20 RATIO
14 ^{C1 = 1µF}
EXTERNAL DIODES
12
TYPICAL
10
8
6
4
2
0
0 100 200 300 400 500 600 700 800
V_IN (mV)
3109 TA05b
Efficiency vs V_IN
50
45
40
35
30
25
20
15
10
5
0
10
100
1000
V_IN (mV)
3109 TA05c
Related Parts
PART NUMBER DESCRIPTION
COMMENTS
LTC3108/
LTC3108-1
LTC4070
LTC1041
LTC1389
Ultralow Voltage Step-Up Converter and
Power Manager
Micropower Shunt Battery Charger
Bang-Bang Controller
Nanopower Precision Shunt Voltage Reference
V_IN: 0.02V to 1V, V_OUT = 2.2V, 2.35V, 3.3V, 4.1V, 5V, I_Q = 6µA,
4mm × 3mm DFN-12, SSOP-16; LTC3108-1 V_OUT = 2.2V, 2.5V, 3V, 3.7V, 4.5V
1% Float Voltage Accuracy, 50mA Max Shunt Current, V_OUT = 4.0V, 4.1V, 4.2V,
I_Q = 450nA, 2mm × 3mm DFN-8, MSOP-8
V_IN: 2.8V to 16V; V_OUT(MIN) = Adj; I_Q = 1.2mA; I_SD < 1µA; SO-8 Package
V_OUT(MIN) = 1.25V; I_Q = 0.8µA; SO-8 Package
LT1672/LT1673/
LT1674
Single-/Dual-/Quad-Precision 2µA Rail-to-Rail
Op Amps
SO-8, SO-14 and MSOP-8 Packages
LT3009
LTC3588-1
3µA I_Q, 20mA Linear Regulator
Piezoelectric Energy Generator with Integrated
High Efficiency Buck Converter
V_IN: 1.6V to 20V; V_OUT(MIN): 0.6V to Adj, 1.2V, 1.5V, 1.8V, 2.5V, 3.3V,
5V to Fixed; I_Q = 3µA; I_SD < 1µA; 2mm × 2mm DFN-8 and SC70 Packages
V_IN: 2.7V to 20V; V_OUT(MIN): Fixed to 1.8V, 2.5V, 3.3V, 3.6V; I_Q = 0.95µA;
3mm × 3mm DFN-10 and MSOP-10E Packages
LT8410/LT8410-1
Micropower 25mA/8mA Low Noise Boost Converter V_IN: 2.6V to 16V; V_OUT(MIN) = 40V_MAX; I_Q = 8.5µA; I_SD < 1µA;
with Integrated Schottky Diode and Output
2mm × 2mm DFN-8 Package
Disconnect
3109fb
24 Linear Technology Corporation
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LT 0813 REV B • PRINTED IN USA
 LINEAR TECHNOLOGY CORPORATION 2010