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LTC1474CS8 датащи(PDF) 14 Page - Linear Technology

номер детали LTC1474CS8
подробное описание детали  Low Quiescent Current High Efficiency Step-Down Converters
PDF  20 Pages
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производитель  LINER [Linear Technology]
домашняя страница  http://www.linear.com
Logo LINER - Linear Technology

LTC1474CS8 датащи(HTML) 14 Page - Linear Technology

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14
LTC1474/LTC1475
TYPICAL APPLICATIONS
1474/75 F10
VIN
GND
SENSE
LBI
RUN
VFB
LBO
SW
LTC1474
+
6
3
8
1
2
5
7
4
100k
1.43M
1%
RUN
1000pF
4.7
µF†
35V
0.1
µF
VIN
3.5V TO 18V
1M
1%
2
Ω**
1
Ω**
1
Ω**
10pF
L*
270
µH
D1
MBR0530
+
100
µF††
6.3V
VOUT
3V
100mA
* SUMIDA CDRH73-271
** 3 PARALLEL STANDARD RESISTORS
PROVIDE LEAST EXPENSIVE SOLUTION
(SEE R SENSE SELECTION SECTION)
† AVX TPSC475M035
†† AVX TPSC107M006
Figure 10. High Efficiency 3V/100mA Regulator (Design Example)
Figure 11. High Efficiency 3.3V/10mA Output from 4mA to 20mA Loop
1474/75 F11
VIN
GND
SENSE
LBI
RUN
VOUT
LBO
SW
LTC1474-3.3
6
3
8
1
2
5
7
4
100k
RUN
TO A/D
MBR0530
1000pF
1
µF
× 3
IN+
4mA TO 20mA
IN–
4mA TO 20mA
2
Ω
7.5M
1M
D2††
12V
L*
330
µH
D1
MBR0530
10
µF**
VOUT
3.3V
10mA
* COILCRAFT DO1608-334
** MARCON THCS50E1E106Z,
AVX 1206ZG106Z
† OPTIONAL RESISTOR FOR SENSING LOOP CURRENT BY A/D CONVERTER
† † MOTOROLA MMBZ5242BL
†



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