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LTM8063 Fiches technique(PDF) 13 Page - Linear Technology

No de pièce LTM8063
Description  40VIN, 2A Silent Switcher 關Module Regulator
Download  24 Pages
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Fabricant  LINER [Linear Technology]
Site Internet  http://www.linear.com
Logo LINER - Linear Technology

LTM8063 Fiches technique(HTML) 13 Page - Linear Technology

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LTM8063
13
8063fa
For more information www.linear.com/LTM8063
For most applications, the design process is straight-
forward, summarized as follows:
1. Look at Table 1 and find the row that has the desired
input range and output voltage.
2. Apply the recommended,CIN,COUT,RFBandRTvalues.
3. Apply the CFF (from VOUT to FB) as required.
While these component combinations have been tested
for proper operation, it is incumbent upon the user to
verify proper operation over the intended system’s line,
load and environmental conditions. Bear in mind that the
maximum output current is limited by junction tempera-
APPLICATIONS INFORMATION
ture, the relationship between the input and output voltage
magnitude and polarity and other factors. Please refer to
the graphs in the Typical Performance Characteristics
section for guidance.
The maximum frequency (and attendant RT value) at
which the LTM8063 should be allowed to switch is given
in Table 1 in the Maximum fSW column, while the recom-
mended frequency (and RT value) for optimal efficiency
over the given input condition is given in the fSW column.
There are additional conditions that must be satisfied if
the synchronization function is used. Please refer to the
Synchronization section for details.
Table 1. Recommended Component Values and Configuration (TA = 25°C)
VIN
VOUT
RFB
(kΩ)
CIN2
COUT
CFF
fSW
RT
(kΩ)
MAX fSW
MIN RT
(kΩ)
3.2 to 40
0.77V
Open
1µF 50V 0805 X5R
100µF 4V 0805 X5R
27pF
600kHz
73.2
600kHz
73.2
3.2 to 40
1.0V
845
1µF 50V 0805 X5R
100µF 4V 0805 X5R
10pF
700kHz
60.4
725kHz
59
3.2 to 40
1.2V
453
1µF 50V 0805 X5R
100µF 4V 0805 X5R
800kHz
52.3
850kHz
48.7
3.2 to 40
1.5V
267
1µF 50V 0805 X5R
100µF 4V 0805 X5R
800kHz
52.3
1MHz
41.2
3.2 to 40
1.8V
187
1µF 50V 0805 X5R
100µF 4V 0805 X5R
900kHz
47.5
1.2MHz
33.2
3.3 to 40V1
2.0V
154
1µF 50V 0805 X5R
100µF 4V 0805 X5R
1MHz
41.2
1.3MHz
29.4
3.8 to 40V1
2.5V
113
1µF 50V 0805 X5R
47µF 4V 0805 X5R
1.2MHz
33.2
1.6MHz
23.7
5 to 40V1
3.3V
75
1µF 50V 0805 X5R
47µF 4V 0805 X5R
1.2MHz
33.2
2MHz
18.2
6.5 to 40V1
5V
45.3
1µF 50V 0805 X5R
22µF 6.3V 0805 X5R
1.4MHz
27.4
2.2MHz
15.8
10.5 to 40V1
8V
26.7
1µF 50V 0805 X5R
10µF 10V 0805 X5R
1.8MHz
20.5
2.2MHz
15.8
18.5 to 40V1
12V
17.4
1µF 50V 0805 X5R
10µF 16V 0805 X7S
1.8MHz
20.5
2.2MHz
15.8
22 to 40V1
15V
13.7
1µF 50V 0805 X5R
10µF 25V 1206 X7R
2MHz
18.2
2.2MHz
15.8
3.2 to 36V1
–3.3V
75
1µF 50V 0805 X5R
47µF 4V 0805 X5R
1.2MHz
33.2
2MHz
18.2
3.2 to 35V1
–5V
45.3
1µF 50V 0805 X5R
22µF 6.3V 0805 X5R
1.4MHz
27.4
2.2MHz
15.8
3.2 to 32V1
–8V
26.7
1µF 50V 0805 X5R
10µF 10V 0805 X5R
1.8MHz
20.5
2.2MHz
15.8
3.2 to 28V1
–12V
17.4
1µF 50V 0805 X5R
10µF 16V 0805 X7S
1.8MHz
20.5
2.2MHz
15.8
3.2 to 25V1
–15V
13.7
1µF 50V 0805 X5R
10µF 25V 1206 X7R
2MHz
18.2
2.2MHz
15.8
1. The LTM8063 may be capable of lower input voltages but may skip switching cycles.
2. An input bulk capacitor is required


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