for harvesting surplus energy from extremely low input
voltage sources such as TEGs (thermoelectric genera-
tors) and thermopiles. Its unique, proprietary autopolarity
topology* allows it to operate from input voltages as low
as 30mV, regardless of polarity.
Using two compact step-up transformers and external
energy storage elements, the LTC3109 provides a com-
plete power management solution for wireless sensing
and data acquisition. The 2.2V LDO can power an external
microprocessor, while the main output can be programmed
to one of four fixed voltages. The power good indicator
signals that the main output is within regulation. A second
output can be enabled by the host. A storage capacitor (or
battery) can also be charged to provide power when the
input voltage source is unavailable. Extremely low quies-
cent current and high efficiency maximizes the harvested
energy available for the application.
The LTC3109 is available in a small, thermally enhanced
20-lead (4mm
×
4mm) QFN package and a 20-lead SSOP
package.
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
*Patent pending.
n
n
n
n
n
Operates from Inputs as Low as ±30mV
Less Than ±1°C Needed Across TEG to Harvest
Energy
Proprietary Auto-Polarity Architecture
Complete Energy Harvesting Power Management
System
– Selectable V
OUT
of 2.35V, 3.3V, 4.1V or 5V
– 2.2V, 5mA LDO
– Logic-Controlled Output
– Energy Storage Capability for Operation During
Power Interruption
Power Good Indicator
Uses Compact Step-up Transformers
Small, 20-lead (4mm
×
4mm) QFN Package or
20-Lead SSOP
applicaTions
n
n
n
n
n
n
Remote Sensor and Radio Power
HVAC Systems
Automatic Metering
Building Automation
Predictive Maintenance
Industrial Wireless Sensing
Typical applicaTion
TEG
(THERMOELECTRIC GENERATOR)
±30mV TO ±500mV
1:100
1nF
•
•
C1A
470pF
C2A
SWA
V
INA
C1B
470pF
C2B
V
OUT2
V
OUT
VLDO
OPTIONAL SWITCHED OUTPUT FOR SENSORS
3.3V
2.2V
2.2µF
V
OUT
Current vs TEG Voltage
900
800
1:100 TRANSFORMERS
C1A = C1B = 1nF
V
OUT
= 3.3V
47µF
+
470µF
700
LOW POWER
RADIO
600
I
VOUT
(µA)
500
400
300
200
•
1:100
1nF
LTC3109
µP
PG00D
•
SENSOR(S)
VAUX
SWB V
OUT2_EN
V
INB
VS1
VSTORE
VAUX
VS2
GND
5.25V
1µF
100
+
C
STORE
3109 TA01a
0
–300
–200
–100
0
100
V
TEG
(mV)
200
300
3109 TA01b
3109fb
For more information
www.linear.com/LTC3109
1
LTC3109
absoluTe MaxiMuM raTings
(Note 1)
SWA, SWB, V
INA
, V
INB
Voltage .................... –0.3V to 2V
C1A, C1B Voltage ......................................... –0.3V to 6V
C2A, C2B Voltage (Note 6) .............................. –8V to 8V
V
OUT2
, V
OUT2_EN
.......................................... –0.3V to 6V
VS1, VS2, V
OUT
, PGOOD .............................. –0.3V to 6V
VLDO, VSTORE ............................................ –0.3V to 6V
VAUX...................................................... 15mA Into V
AUX
Operating Junction Temperature Range
(Note 2) .................................................. –40°C to 125°C
Storage Temperature Range .................. –65°C to 125°C
pin conFiguraTion
TOP VIEW
GND
VS2
VS1
C1A
C2A
20 19 18 17 16
VSTORE 1
VAUX 2
V
OUT
3
V
OUT2
4
V
OUT2_EN
5
6
PGOOD
7
VLDO
8
GND
9 10
C1B
C2B
21
GND
15 SWA
14 V
INA
13 V
INB
12 SWB
11 GND
VS1
VS2
VSTORE
VAUX
V
OUT
V
OUT2
V
OUT2_EN
PGOOD
VLDO
1
2
3
4
5
6
7
8
9
TOP VIEW
20 C1A
19 C2A
18 GND
17 SWA
16 V
INA
15 V
INB
14 SWB
13 GND
12 C2B
11 C1B
GND 10
UF PACKAGE
20-LEAD (4mm
×
4mm) PLASTIC QFN
T
JMAX
= 125°C,
θ
JA
= 37°C/W
EXPOSED PAD (PIN 21) IS GND (Note 5)
GN PACKAGE
20-LEAD PLASTIC SSOP
T
JMAX
= 125°C,
θ
JA
= 90°C/W
orDer inForMaTion
LEAD FREE FINISH
LTC3109EUF#PBF
LTC3109IUF#PBF
LTC3109EGN#PBF
LTC3109IGN#PBF
TAPE AND REEL
LTC3109EUF#TRPBF
LTC3109IUF#TRPBF
LTC3109EGN#TRPBF
LTC3109IGN#TRPBF
PART MARKING*
3109
3109
LTC3109GN
LTC3109GN
PACKAGE DESCRIPTION
20-Lead (4mm
×
4mm) Plastic QFN
20-Lead (4mm
×
4mm) Plastic QFN
20-Lead Plastic SSOP
20-Lead Plastic SSOP
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to:
http://www.linear.com/tapeandreel/
2
3109fb
For more information
www.linear.com/LTC3109
LTC3109
elecTrical characTerisTics
PARAMETER
Minimum Start-Up Voltage
No-Load Input Current
The
l
denotes the specifications which apply over the full operating
junction temperature range, otherwise specifications are for T
I don't know why there is output only on P1.2 and P1.6. CCR1 corresponds to P1.2 output and CCR2 corresponds to P1.6. I now want to map the path controlled by CCR2 to P1.1, but no matter how I change ...
[i=s]This post was last edited by wugx on 2016-8-19 22:43[/i] The xx and xxxx in this article are not garbled characters, they are just nouns----There is not much process design in the paper, mainly p...
Language: C++ Four requirements: A cross-platform dialog program, multi-threaded, threads can communicate, threads can send messages to the main window. Specific platforms include: CE, Linux. If there...
When I started Allegro, I checked the Cadence Product Choices! Use as default dialog box at the beginning! So the dialog box disappeared! Now I want to show this dialog box again! What should I do? ?...
[color=Red][b][size=4]How to shrink your Arduino project into a chip[/size][/b][/color] : https://training.eeworld.com.cn/course/1935[b][size=3]If you have a simple Arduino project that uses only a fe...
1. Use μA741 to build a clock pulse generator with an output amplitude of about 3.5V. The cycle is about 1 second. 2. Use 74LS194 to form an 8-light running light control circuit, requiring one light ...
Hardware designers have begun to adopt FPGA technology in high-performance DSP designs because it can provide 10-100 times faster computing than PC-based or microcontroller-based solutions. Previou...[Details]
As a wireless broadband metropolitan area network standard, WiMAX technology has greater advantages than previous 3.5GHz MMDS products in terms of non-line-of-sight transmission and spectrum utiliz...[Details]
0. Introduction
In daily life, we often see some special-purpose vehicles. When these vehicles pass through intersections, they often obtain the right of way at intersections by temporarily op...[Details]
In recent years, lighting has become an important area that countries around the world are targeting to promote energy conservation and environmental protection. According to statistics, about 20% ...[Details]
1. With the development of modern industry and the continuous improvement of automation, some medium and large control systems have been greatly facilitated, which not only makes control easier, bu...[Details]
The potentiometer is an adjustable electronic component. The main functions of the potentiometer in the circuit are as follows:
1. Used as a voltage divider
A potentiometer is a continuou...[Details]
In today's body control module (BCM) designs, savvy engineers are moving away from electromechanical relays whenever possible. Their next step is to eliminate fuses. But is eliminating fuses a nece...[Details]
Abstract: The output of high-range acceleration sensor is less than 10 mV under the excitation of small signal. The noise of traditional test system may cover such small voltage signal, so that hig...[Details]
1 Introduction
Ultrasound refers to elastic vibration with a frequency higher than the audible frequency limit (i.e., in the frequency band above 20 kHz). The propagation process of this vib...[Details]
LED is now known as the fourth generation of light sources. High-power LED has many advantages over traditional light sources in outdoor lighting.
1 LED lamps have high light efficiency
C...[Details]
Nowadays, more and more people have digital cameras. The convenience and speed of digital cameras have gradually replaced film cameras and become the main tool for people's daily photography. The n...[Details]
This article focuses on closing the feedback loop of an isolated power supply using a TL431 shunt regulator. The article discusses a method to extend the bandwidth of the power supply control loop ...[Details]
In industry, voltage 0…5 (10) V or current 0 (4)…20 mA is usually used as a method for analog signal transmission, which is also a method often used by programmable controllers. So what are the dif...[Details]
The automotive power electronics market has grown rapidly as comfort and active safety features become more common. As traditional mechanical functions shift to electronic applications, the demand ...[Details]
introduction
The core features of mobile value-added service products are mobility, immediacy and personalization. Mobile value-added services are a new service mode that is rapidly developing...[Details]
Microcontroller MCU
京公网安备 11010802033920号
EEWORLD
