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參數(shù)資料
| 型號： | LTC3588IDD-1#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, PDSO10 |
| 封裝： | 3 X 3 MM, LEAD FREE, PLASTIC, MO-229WEED-2, DFN-10 |
| 文件頁數(shù)： | 7/20頁 |
| 文件大?。?/td> | 391K |
| 代理商： | LTC3588IDD-1#TRPBF |
LTC3588-1
15
35881fa
Figure 9. AC Line Powered 3.6V Buck Regulator with
Large Output Capacitor to Support Heavy Loads
35881 F09
PZ1
VIN
CAP
VIN2
D1
D0
PZ2
PGOOD
SW
VOUT
LTC3588-1
DANGER! HIGH VOLTAGE!
GND
150k
100μF
6V
10μH
VOUT
3.6V
PGOOD
10μF
25V
120VAC
60Hz
1μF
6V
4.7μF
6V
150k
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.
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 rectier 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
specication. For general off-line applications refer to UL
regulation 1012.
Figure 10 shows an application where copper panels are
placed near a standard uorescent room light to capacitively
Figure 10. Electric Field Energy Harvester
35881 F10
PZ1
VIN
CAP
VIN2
D1
D0
PZ2
PGOOD
SW
VOUT
LTC3588-1
GND
10μF
6V
10μH
3.3V
PGOOD
10μF
25V
1μF
6V
4.7μF
6V
COPPER PANEL
(12"
24")
COPPER PANEL
(12"
24")
PANELS ARE PLACED 6"
FROM 2'
4' FLUORESCENT
LIGHT FIXTURES
harvest energy from the electric 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 rectier can handle a wide
range of input frequencies.
The LTC3588-1 can also be congured 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 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 VIN with a blocking diode.
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