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LTC4449 bảng dữ liệu(PDF) 9 Page - Analog Devices

tên linh kiện LTC4449
Giải thích chi tiết về linh kiện  Quad-Phase, Synchronous Bidirectional Buck or Boost Controller
PDF  48 Pages
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nhà sản xuất  AD [Analog Devices]
Trang chủ  http://www.analog.com
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LTC4449 bảng dữ liệu(HTML) 9 Page - Analog Devices

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LTC7872
9
Rev. 0
For more information www.analog.com
TYPICAL PERFORMANCE CHARACTERISTICS
Quiescent Current vs Temperature
Shutdown Current vs Temperature
FREQ Pin Source Current
vs Temperature
SETCUR Pin Source Current
vs Temperature
Current Sense Threshold
vs ITH Voltage (DCR) as a
Function of ILIM
Maximum Current Sense
Threshold vs Feedback Voltage—
BUCK (DCR) as a Function of ILIM
Current Sense Threshold
vs ITH Voltage—(RSENSE) as
a Function of ILIM
Maximum Current Sense Threshold
vs Feedback Voltage—BUCK
(RSENSE) as a Function of ILIM
Overcurrent Fault Threshold
vs Temperature as a Function
of ILIM
TA = 25°C, unless otherwise noted.
VHIGH = 48V
TEMPERATURE (°C)
–45 –20
5
30
55
80 105 130 155
7.0
8.0
9.0
10.0
11.0
12.0
13.0
Quiescent Current vs Temperature
7872 G10
VHIGH = 48V
TEMPERATURE (°C)
–45 –20
5
30
55
80 105 130 155
20.0
30.0
40.0
50.0
60.0
Shutdown Current vs Temperature
7872 G11
TEMPERATURE (°C)
–45 –20
5
30
55
80 105 130 155
18.5
19.0
19.5
20.0
20.5
21.0
21.5
vs Temperature
7872 G12
TEMPERATURE (°C)
–45 –20
5
30
55
80 105 130 155
15.0
15.2
15.4
15.6
15.8
16.0
16.2
16.4
16.6
16.8
17.0
vs Temperature
7872 G13
GND
1/4 V5
FLOAT
3/4 V5
V5
ITH VOLTAGE (V)
0
0.5
1
1.5
2
–50
–40
–30
–20
–10
0
10
20
30
40
50
7872 G14
GND
1/4 V5
FLOAT
3/4 V5
V5
FEEDBACK VOLTAGE (V)
0
0.2
0.4
0.6
0.8
1.0
1.2
0
10
20
30
40
50
60
70
BUCK (DCR)
7872 G15
GND
1/4 V5
FLOAT
3/4 V5
V5
ITH VOLTAGE (V)
0
0.5
1
1.5
2
–70
–50
–30
–10
10
30
50
70
vs ITH Voltage (RSENSE)
7872 G16
GND
1/4 V5
FLOAT
3/4 V5
V5
FEEDBACK VOLTAGE (V)
0
0.2
0.4
0.6
0.8
1.0
1.2
0
10
20
30
40
50
60
70
80
SENSE
7872 G17
GND
1/4 V5
FLOAT
3/4 V5
V5
TEMPERATURE (°C)
–45 –20
5
30
55
80 105 130 155
0
20
40
60
80
100
Temperature
7872 G18



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