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LTC1778 Datasheet(PDF) 21 Page - Linear Technology

Part # LTC1778
Description  Wide Operating Range, No RSENSE TM Step-Down Controller
PDF  24 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1778 Datasheet(HTML) 21 Page - Linear Technology

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21
LTC1778/LTC1778-1
1778fa
TYPICAL APPLICATIO S
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
RUN/SS
VON
VRNG
FCB
ITH
SGND
ION
VFB
BOOST
TG
SW
PGND
BG
INTVCC
VIN
EXTVCC
LTC1778-1
+
M2
IRF7811A
M3
Si4888
D1
B340A
D2
IR 12CWQ03FN
M1
IRF7811A
L1 4.8
µH
COUT
100
µF
20V
×6
CIN
22
µF
50V
×2
VIN
6V TO 18V
VOUT
12V
CSS
0.1
µF
CC1 1nF
C1
100pF
CC2
220pF
CVCC
4.7
µF
CF
0.1
µF
CIN: MARCON THER70EIH226ZT
COUT: AVX TPSV107M020R0085
L1: SCHOTT 36835-1
PGND
CB
0.22
µF
RC
47k
R1
10k 1%
RON2
1.5M
1%
RON1
1.5M
1%
R2
140k
1%
RF
1
Ω
DB
CMDSH-3
1778 TA04
VIN
18V
12V
6V
IOUT
6A
5A
3.3A
Single Inductor, Positive Output Buck/Boost
12V/5A at 300kHz
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
RUN/SS
VON
VRNG
FCB
ITH
SGND
ION
VFB
BOOST
TG
SW
PGND
BG
INTVCC
VIN
EXTVCC
LTC1778-1
+
M2
M1
L1 10
µH
COUT
220
µF
16V
CIN
22
µF
50V
VIN
14V TO 28V
VOUT
12V
5A
CSS
0.1
µF
CC1
2.2nF
CC2
100pF
C2
2200pF
CVCC
4.7
µF
CF
0.1
µF
CB
0.22
µF
RC
20k
R1
10k
RON
1.6M
R2
140k
RF
1
Ω
DB
CMDSH-3
D1
1778 TA05
UNITED CHEMICON THCR70E1H226ZT (847) 696-2000
SANYO 16SV220M
(619) 661-6835
SUMIDA CDRH127-100
(847) 956-0667
FAIRCHILD FDS6680A
(408) 822-2126
DIODES, INC. B340A
(805) 446-4800
CIN:
COUT:
L1:
M1, M2:
D1:



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