900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf




Linear Technology Electronic Components Datasheet

LTC3108IGN-1 Datasheet

Ultralow Voltage Step-Up Converter and Power Manager

No Preview Available !

LTC3108-1
Ultralow Voltage Step-Up
Converter and Power Manager
Features
n Operates from Inputs of 20mV
n Complete Energy Harvesting Power
Management System
- Selectable VOUT of 2.5V, 3V, 3.7V or 4.5V
- LDO: 2.2V at 3mA
- Logic Controlled Output
- Reserve Energy Output
n Power Good Indicator
n Uses Compact Step-Up Transformers
n Small 12-Lead (3mm × 4mm) DFN or 16-Lead
SSOP Packages
Applications
n Remote Sensors and Radio Power
n Surplus Heat Energy Harvesting
n HVAC Systems
n Industrial Wireless Sensing
n Automatic Metering
n Building Automation
n Predictive Maintenance
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.
Description
The LTC®3108-1 is a highly integrated DC/DC converter ideal
for harvesting and managing surplus energy from extremely
low input voltage sources such as TEGs (thermoelectric
generators), thermopiles and small solar cells. The step-up
topology operates from input voltages as low as 20mV.
Using a small step-up transformer, the LTC3108-1 provides
a complete power management solution for wireless sens-
ing and data acquisition. The 2.2V LDO powers an external
microprocessor, while the main output is programmed to
one of four fixed voltages to power a wireless transmitter
or sensors. The power good indicator signals that the main
output voltage is within regulation. A second output can be
enabled by the host. A storage capacitor provides power
when the input voltage source is unavailable. Extremely
low quiescent current and high efficiency design ensure
the fastest possible charge times of the output reservoir
capacitor. The LTC3108-1 is functionally equivalent to the
LTC3108 except for its unique fixed VOUT options.
The LTC3108-1 is available in a small, thermally enhanced
12-lead (3mm × 4mm) DFN package and a 16-lead SSOP
package.
Typical Application
THERMOELECTRIC
GENERATOR
++
20mV TO 500mV
Wireless Remote Sensor Application
Powered From a Peltier Cell
1:100
1nF
C1
VSTORE
5.25V
+
220µF
330pF
LTC3108-1
C2
VOUT2
PGD PGOOD
SW
VLDO 2.2V
VS2
VOUT 3V +
0.1F
6.3V
µP
2.2µF SENSORS
470µF RF LINK
VS1 VOUT2_EN
VAUX GND
31081 TA01a
1µF
For more information www.linear.com/LTC3108-1
VOUT Charge Time
1000
VOUT = 3V
COUT = 470µF
100
10
1
1:100 Ratio
1:50 Ratio
1:20 Ratio
0
0 50 100 150 200 250 300 350 400
VIN (mV)
31081 TA01b
31081fb
1


Linear Technology Electronic Components Datasheet

LTC3108IGN-1 Datasheet

Ultralow Voltage Step-Up Converter and Power Manager

No Preview Available !

LTC3108-1
Absolute Maximum Ratings (Note 1)
SW Voltage...................................................–0.3V to 2V
C1 Voltage.....................................................–0.3V to 6V
C2 Voltage (Note 5)..........................................–8V to 8V
VOUT2, VOUT2_EN............................................–0.3V to 6V
VAUX.....................................................15mA into VAUX
VS1, VS2, VAUX, VOUT, PGD.........................–0.3V to 6V
VLDO, VSTORE.............................................–0.3V to 6V
Operating Junction Temperature Range
(Note 2).................................................. –40°C to 125°C
Storage Temperature Range................... –65°C to 125°C
Pin Configuration
TOP VIEW
VAUX 1
VSTORE 2
VOUT 3
VOUT2 4
VLDO 5
PGD 6
12 SW
11 C2
13
10 C1
GND
9 VOUT2_EN
8 VS1
7 VS2
DE PACKAGE
12-LEAD (4mm × 3mm) PLASTIC DFN
TJMAX = 125°C, θJA = 43°C/W
EXPOSED PAD (PIN 13) IS GND, MUST BE SOLDERED TO PCB (NOTE 4)
TOP VIEW
GND 1
VAUX 2
VSTORE 3
VOUT 4
VOUT2 5
VLDO 6
PGD 7
GND 8
16 GND
15 SW
14 C2
13 C1
12 VOUT2_EN
11 VS1
10 VS2
9 GND
GN PACKAGE
16-LEAD PLASTIC SSOP NARROW
TJMAX = 125°C, θJA = 110°C/W
order information
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
LTC3108EDE-1#PBF
LTC3108EDE-1#TRPBF 31081
12-Lead (4mm × 3mm) Plastic DFN
LTC3108IDE-1#PBF
LTC3108IDE-1#TRPBF 31081
12-Lead (4mm × 3mm) Plastic DFN
LTC3108EGN-1#PBF
LTC3108EGN-1#TRPBF 31081
16-Lead Plastic SSOP
LTC3108IGN-1#PBF
LTC3108IGN-1#TRPBF 31081
16-Lead Plastic SSOP
Consult LTC Marketing for parts specified for other fixed output voltages or wider operating temperature ranges.
*The temperature grade is identified by a label on the shipping container.
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/
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
Electrical Characteristics The l denotes the specifications which apply over the full operating
junction temperature range, otherwise specifications are for TA = 25°C (Note 2). VAUX = 5V, unless otherwise noted.
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Minimum Start-Up Voltage
Using 1:100 Transformer Turns Ratio, VAUX = 0V
20
50
mV
No-Load Input Current
Input Voltage Range
Using 1:100 Transformer Turns Ratio; VIN = 20mV,
VOUT2_EN = 0V; All Outputs Charged and in Regulation
3
mA
Using 1:100 Transformer Turns Ratio
l VSTARTUP
500
mV
31081fb
2
For more information www.linear.com/LTC3108-1


Part Number LTC3108IGN-1
Description Ultralow Voltage Step-Up Converter and Power Manager
Maker Linear
PDF Download

LTC3108IGN-1 Datasheet PDF






Similar Datasheet

1 LTC3108IGN-1 Ultralow Voltage Step-Up Converter and Power Manager
Linear





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z



Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy