LTC1149CN-5 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC1149CN-5' PDF : 20 Pages View PDF
LTC1149
LTC1149-3.3/LTC1149-5
U
TYPICAL APPLICATIO S
+
1µF
1N4148
1N4148
0.047µF
390pF
0.068µF
3300pF
1k
1
PGATE
CAP 16
2
VIN
SHDN2 15
3
VCC
R-GND 14
4
P-DRIVE
13
NGATE
5
LTC1149-3.3
12
VCC
PGND
6
CT
11
SGND
7
ITH
SHDN1 10
8 SENSE–
SENSE+ 9
*COILTRONICS CTX02-11932
**DALE WSC-1/2-0.1
VIN
8V TO 20V
IRFR9024
L*
68µH
+ 100µF
35V
RSENSE**
0.1Ω
IRFR024
1N5818
VOUT
3.3V/1A
+ 220µF
6.3V
AVX
0V = NORMAL
>2V = SHUTDOWN
1000pF
1149 F10
Figure 10. High Efficiency 8V to 20V Input 3.3V/1A Output Regulator
+
3.3µF
1N4148
1N4148
0.047µF
470pF
0.068µF
3300pF
1k
1
PGATE
CAP 16
2
VIN
SHDN2 15
3
VCC
RGND 14
4
PDRIVE
13
NGATE
5
VCC
LTC1149-3.3
PGND
12
6
CT
SGND 11
7
ITH
SHDN1 10
8 SENSE–
SENSE+ 9
*COILTRONICS CTX33-4-KM
**KRL SL-1-C1-0R033J
VIN
8V TO 20V
IRF9Z34
L*
33µH
+ 220µF
35V
RSENSE**
0.033Ω
IRFZ34
1N5818
VOUT
3.3V/3A
+ 220µF
6.3V × 2
AVX
SHUTDOWN
1000pF
100Ω
100Ω
1149 F11
Figure 11. High Efficiency 8V to 20V Input 3.3V/3A Output Regulator
16
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