LTC1148L 데이터 시트보기 (PDF) - Linear Technology
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LTC1148L Datasheet PDF : 20 Pages
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LTC1148
LTC1148-3.3/LTC1148-5
UU
W
FU CTIO AL DIAGRA Pin 9 connection shown for LTC1148-3.3 and LTC1148-5; changes create LTC1148.
SGND
11
SLEEP
S
VTH2
VTH1
R
Q
S
–
T
+
4
CT
OFF-TIME
CONTROL
VIN
SENSE
–
VFB
3 VIN
1 P-DRIVE
14 N-DRIVE
12 PGND
SENSE+
SENSE –
8
7
ADJUSTABLE
VERSION
VFB
9
V
25mV TO 150mV
C
–+
13k
ITH 6
VOS
G
1.25V
5pF
100k
SHUTDOWN 10 REFERENCE 5 INTVCC
LTC1148 • FD
TEST CIRCUIT
+
VIN
IRF9Z34 1N5818
+
330µF
390pF
1
14
P-DRIVE N-DRIVE
2
13
+
1µF
NC
NC
3
LTC1148
12
VIN
PGND
10nF
3300pF
+
1k
V7
4
11
CT
5
SGND
V10
10 +
INTVCC SHUTDOWN
6
ITH
9
NC (VFB)
7 SENSE–
SENSE+ 8
1000pF
+
50µH
IRFZ34
25k
100pF
V7
TO
RSENSE 75k
0.05Ω
V8
+ 440µF
VOUT
6
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