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LTC1148 View Datasheet(PDF) - Linear Technology

Part Name
Description
MFG CO.
'LTC1148' PDF : 20 Pages View PDF
LTC1148
LTC1148-3.3/LTC1148-5
U
TYPICAL APPLICATIO S
Si9803DY
VIN
5V
+
D1
MBRS140T3
CIN
100µF
20V
×2
Si9804DY
0.1µF
CT
270pF
NPO
CC
3300pF
RC
470
1
14
P-DRIVE N-DRIVE
2 NC
NC 13
LTC1148-3.3
3 VIN
PGND 12
4
CT
SGND 11
*L
10µH
5
10
INTVCC SHUTDOWN
SHUTDOWN
6 ITH
NC 9
7 SENSESENSE+ 8
1000pF
*COILTRONICS CTX10-5P
**KRL SP-1-C1-0R020
+
RSENSE**
0.02
COUT
220µF
10V
AVX
×2
VOUT
3.3V/4.5A
LTC1148 • F15
Figure 15. High Efficiency 5V to 3.3V/4.5A Converter
Si4435DY
VIN
4V TO 14V
+ CIN
100µF
20V
VOUT
1N4148
1µF
CT
390pF
CC
3300pF
RC
1k
1
14
P-DRIVE N-DRIVE
2
NC
13
NC
LTC1148
3
12
VIN
PGND
4 CT
SGND 11
5 INTVCC SHUTDOWN 10 SHUTDOWN
6
ITH
9
VFB
7 SENSESENSE+ 8
0.1µF
L2
50µH
220µF*
10V
OS-CON
Si4412DY
RSENSE**
0.082
*LOW ESR REQUIRED
**KRL NP-1A-C1-0R082J
L1
50µH
D1
R2
MBRS140T3 75k
1%
VOUT
5V/1A
100pF
+
COUT
220µF
10V
R1
OS-CON
25k
1%
LTC1148 • F16
Figure 16. 4V to 14V Input Voltage to 5V/1A Regulator with Current Foldback
18
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