LTC1625 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC1625' PDF : 24 Pages View PDF
LTC1625
APPLICATIONS INFORMATION
OPTIONAL 5V EXTVCC
CONNECTION
1
EXTVCC
16
VIN
CSS
EXT
CLK
2
SYNC
3
RUN/SS
15
TK
14
SW
4
LTC1625
13
CC1
OPEN FCB
RC
5
TG
12
ITH
BOOST
R2
R1
6
SGND
7
VOSENSE
OPEN 8 VPROG
11
INTVCC
10
BG
9
PGND
OUTPUT DIVIDER
REQUIRED
WITH VPROG OPEN
BOLD LINES INDICATE HIGH CURRENT PATHS
+
M1
L1
CB
VIN
DB
CVCC
+
+
M2
D1
CIN
–
–
+ COUT
VOUT
+
1625 F10
Figure 10. LTC1625 Layout Diagram
TYPICAL APPLICATIONS
5V/1.2A Fixed Output at 225kHz
CSS
0.1µF INTVCC
CC
330pF RC
10k
OPEN
1
EXTVCC
16
VIN
2
SYNC
3
RUN/SS
15
TK
14
SW
4
LTC1625
13
FCB
TG
5
12
ITH
BOOST
6
SGND
7
VOSENSE
8
VPROG
11
INTVCC
10
BG
9
PGND
DB
CMDSH-3
CB
0.1µF
CVCC
4.7µF
+
+ CIN
15µF
M1
35V
1/2 Si9936DY
L1
39µH
VIN
5V TO 28V
VOUT
5V
1.2A
M2
1/2 Si9936DY
+
COUT
100µF
10V
0.100Ω
CIN: AVX TPSD156M035R0300
COUT: AVX TPSD107M010R0100
L1: SUMIDA CD104-390MC
1625 TA02
19
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