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LTC1148CS 数据表(PDF) 6 Page - Linear Technology

部件名 LTC1148CS
功能描述  High Efficiency Synchronous Step-Down Switching Regulators
PDF  20 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC1148CS 数据表(HTML) 6 Page - Linear Technology

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6
LTC1148
LTC1148-3.3/LTC1148-5
+
–
1
P-DRIVE
14
3VIN
12 PGND
N-DRIVE
R
S
Q
C
25mV TO 150mV
6
13k
ITH
1.25V
10
5
REFERENCE
SHUTDOWN
INTVCC
VOS
V
G
8
SENSE+
9
ADJUSTABLE
VERSION
VFB
100k
5pF
VTH1
T
–
+
VTH2
S
SLEEP
11
SGND
4
CT
OFF-TIME
CONTROL
VIN
SENSE–
VFB
SENSE–
7
LTC1148 • FD
FU CTIO AL DIAGRA
Pin 9 connection shown for LTC1148-3.3 and LTC1148-5; changes create LTC1148.
TEST CIRCUIT
+
1
2
3
4
5
6
7
14
13
12
11
10
9
8
P-DRIVE
NC
VIN
CT
INTVCC
ITH
SENSE–
N-DRIVE
NC
PGND
SGND
SHUTDOWN
NC (VFB)
SENSE+
1000pF
V7
TO
V8
+
V10
RSENSE
0.05
Ω
75k
25k
100pF
VOUT
440
µF
50
µH
1
µF
IRFZ34
1N5818
330
µF
+
IRF9Z34
+
VIN
+
V7
1k
3300pF
10nF
390pF
LTC1148



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