LTC3588EDD-1#PBF Linear Technology, LTC3588EDD-1#PBF Datasheet - Page 15

• Manufacturer Part Number: LTC3588EDD-1#PBF
• Description: IC ENEGRY HARVESTING PSU 10DFN
• Manufacturer: Linear Technology

Specifications of LTC3588EDD-1#PBF

• Applications: Energy Harvesting
• Voltage - Supply: 2.7 V ~ 20 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 10-DFN
• Ic Function: Power Management IC
• Supply Voltage Range: 2.7V To 20V
• Operating Temperature Range: -40°C To +85°C
• Digital Ic Case Style: DFN
• No. Of Pins: 10
• Msl: MSL 1 - Unlimited
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -

APPLICATIONS INFORMATION
Alternate Power Sources
The LTC3588-1 is not limited to use with piezoelectric ele-
ments but can accommodate a wide variety of input sources
depending on the type of ambient energy available. Figure 9
shows the LTC3588-1 internal bridge rectifi er connected
to the AC line in series with four 150k current limiting
resistors. This is a high voltage application and minimum
spacing between the line, neutral, and any high voltage
components should be maintained per the applicable UL
specifi cation. For general off-line applications refer to UL
regulation 1012.
Figure 10 shows an application where copper panels are
placed near a standard fl uorescent room light to capacitively
DANGER! HIGH VOLTAGE!
120VAC
60Hz
10μF
25V
150k
150k
4.7μF
6V
150k
150k
1μF
6V
PZ1
V
CAP
V
D1
D0
IN
IN2
LTC3588-1
GND
Figure 9. AC Line Powered 3.6V Buck Regulator with
Large Output Capacitor to Support Heavy Loads
PGOOD
COPPER PANEL
V
PZ2
OUT
SW
10μF
25V
(12" 24")
Figure 10. Electric Field Energy Harvester
10μH
PGOOD
1μF
6V
4.7μF
6V
35881 F09
PANELS ARE PLACED 6"
FROM 2' 4' FLUORESCENT
LIGHT FIXTURES
PZ1
V
CAP
V
D1
D0
IN
IN2
V
3.6V
100μF
6V
OUT
LTC3588-1
GND
harvest energy from the electric fi eld around the light.
The frequency of the emission will be 120Hz for magnetic
ballasts but could be higher if the light uses electronic
ballast. The LTC3588-1 bridge rectifi er can handle a wide
range of input frequencies.
The LTC3588-1 can also be confi gured for use with DC
sources such as a solar panel or thermal couple as shown
in Figures 11 and 12 by connecting them to one of the
PZ1/PZ2 inputs. Connecting the two sources in this way
prevents reverse current from fl owing in each element.
Current limiting resistors should be used to protect the
PZ1 or PZ2 pins. This can be combined with a battery
backup connected to V
PGOOD
DANGEROUS AND LETHAL POTENTIALS ARE PRESENT IN OFFLINE CIRCUITS!
BEFORE PROCEEDING ANY FURTHER, THE READER IS WARNED THAT
CAUTION MUST BE USED IN THE CONSTRUCTION, TESTING AND USE OF
OFFLINE CIRCUITS. EXTREME CAUTION MUST BE USED IN WORKING WITH
AND MAKING CONNECTIONS TO THESE CIRCUITS. REPEAT: OFFLINE
CIRCUITS CONTAIN DANGEROUS, AC LINE-CONNECTED HIGH VOLTAGE
POTENTIALS. USE CAUTION. ALL TESTING PERFORMED ON AN OFFLINE
CIRCUIT MUST BE DONE WITH AN ISOLATION TRANSFORMER CONNECTED
BETWEEN THE OFFLINE CIRCUIT’S INPUT AND THE AC LINE. USERS AND
CONSTRUCTORS OF OFFLINE CIRCUITS MUST OBSERVE THIS PRECAUTION
WHEN CONNECTING TEST EQUIPMENT TO THE CIRCUIT TO AVOID ELECTRIC
SHOCK. REPEAT: AN ISOLATION TRANSFORMER MUST BE CONNECTED
BETWEEN THE CIRCUIT INPUT AND THE AC LINE IF ANY TEST EQUIPMENT IS
TO BE CONNECTED.
V
PZ2
OUT
SW
10μH
PGOOD
COPPER PANEL
(12" 24")
35881 F10
3.3V
10μF
6V
IN
with a blocking diode.
LTC3588-1
15
35881fa