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LTC1149CS Datasheet(PDF) 17 Page - Linear Technology

Part # LTC1149CS
Description  High Efficiency Synchronous Step-Down Switching Regulators
PDF  20 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1149CS Datasheet(HTML) 17 Page - Linear Technology

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17
LTC1149
LTC1149-3.3/LTC1149-5
Figure 12. Ultra Wide Input Range (5.5V to 25V) High Efficiency 5V Regulator
TYPICAL APPLICATIO S
PGATE
VIN
VCC
PDRIVE
VCC
CT
ITH
SENSE–
CAP
SHDN2
RGND
NGATE
PGND
S-GND
SHDN1
SENSE+
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
LTC1149-5
0.068
µF
0.047
µF
1N4148
1N4148
3300pF
1k
220pF
1
µF
1000pF
Si9410DY
1N5818
220
µF
35V
VIN
5.5V TO 25V
L*
33
µH
RSENSE**
0.05
Ω
220
µF
10V
× 2
AVX
1149 F12
VOUT
5V/2A
*COILTRONICS CTX33-4 Kool M
µ
**KRL SL-1-C1-0R050J
Si9435DY
SHUTDOWN
+
+
+
Figure 13. 250kHz High Efficiency 12V Input 5V/2A Output Regulator
PGATE
VIN
VCC
PDRIVE
VCC
CT
ITH
SENSE–
CAP
SHDN2
RGND
NGATE
PGND
SGND
SHDN1
SENSE+
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
LTC1149-5
0.068
µF
0.047
µF
1N4148
1N4148
3300pF
1k
180pF
1
µF
1000pF
Si9410DY
1N5818
100
µF
25V
VIN
8V TO 16V
L*
22
µH
RSENSE**
0.05
Ω
220
µF
10V
AVX
1149 F13
VOUT
5V/2A
*DALE LPE-6562-220MB
**KRL SL-1-C1-0R050J
Si9430DY
SHUTDOWN
+
+
+



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