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参数资料
| 型号： | LTC3108EDE#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 0.45 A SWITCHING REGULATOR, PDSO12 |
| 封装： | 4 X 3 MM, LEAD FREE, PLASTIC, MO-229WGED, DFN-12 |
| 文件页数： | 10/22页 |
| 文件大小： | 1300K |
| 代理商： | LTC3108EDE#PBF |
LTC3108
3108fa
duration of the burst and T is the period of the transmit
burst rate (essentially the time between bursts).
In this example, IQ = 5A, IBURST = 100mA, t = 5ms and
T = one hour. The average charge current required from
the LTC3108 would be:
I
A
mA
A
CHG ≥
+
=
5
100
0 005
3600
5 14
.
sec
.
Therefore, if the LTC3108 has an input voltage that allows
it to supply a charge current greater than 5.14A, the
application can support 100mA bursts lasting 5ms every
hour. It can be determined that the sleep current of 5A
is the dominant factor because the transmit duty cycle is
so small (0.00014%). Note that for a VOUT of 3.3V, the
average power required by this application is only 17W
(not including converter losses).
Note that the charge current available from the LTC3108
has no effect on the sizing of the VOUT capacitor (if it is
assumedthattheloadcurrentduringaburstismuchlarger
than the charge current), and the VOUT capacitor has no
effect on the maximum allowed burst rate.
applicaTions inForMaTion
Peltier-Powered Energy Harvester for Remote Sensor Applications
Typical applicaTions
3108 TA02
C1
C2
SW
VS2
VS1
COOPER BUSSMAN PB-5ROH104-R
OR KR-5R5H104-R
VOUT2
PGOOD
2.2V
COUT*
PGD
VLDO
VSTORE
+
VOUT
VOUT2_EN
LTC3108
VAUX
GND
CSTORE
0.1F
6.3V
5V
3.3V
1F
1nF
CIN
1:100
T1
T1: COILCRAFT LPR6235-752SML
*COUT VALUE DEPENDENT ON
THE MAGNITUDE AND DURATION
OF THE LOAD PULSE
330pF
T = 1°C TO 20°C
SENSORS
XMTR
P
2.2F
ON
OFF
3.3V
+
THERMOELECTRIC
GENERATOR
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