LTC1148HV Linear Technology, LTC1148HV Datasheet - Page 16

• Manufacturer Part Number: LTC1148HV
• Description: High Efficiency Synchronous Step-Down Switching Regulators
• Manufacturer: Linear Technology

LTC1148
LTC1148-3.3/LTC1148-5
TYPICAL APPLICATIO S
16
C
390pF
T
+
R
1k
C
C
3300pF
1 F
C
Figure 10. 5V/1A High Efficiency Regulator
with Extended Input Voltage Range
**KRL SP-1/2-A1-0R100
*COILTRONICS CTX100-4 Kool M CORE
1
2
3
4
5
6
7
P-DRIVE
NC
V
C
INTV
I
SENSE
TH
IN
T
LTC1148HV-5
CC
–
SHUTDOWN
N-DRIVE
SENSE
PGND
SGND
C
390pF
NC
NC
T
+
14
13
12
11
10
9
8
1/2 Si4532
SHUTDOWN
10nF
1000pF
100 H
U
+
*L
R
220
Figure 12. High Efficiency Adjustable 3A Regulator
C
C
3300pF
1 F
C
R
0.1
SENSE
MBRS140T3
1/2 Si4532
**KRL SL-1-C1-0R033J
*COILTRONICS CTX50-2-MP
**
1
2
3
4
5
6
7
D1
+
P-DRIVE
NC
V
C
INTV
I
SENSE
TH
IN
T
5.2V TO 18V
CC
LTC1148 • F10
LTC1148
+
C
220 F
10V
AVX
–
V
OUT
IN
SHUTDOWN
C
100 F
25V
N-DRIVE
SENSE
IN
V
5V/1A
PGND
SGND
OUT
V
NC
FB
+
14
13
12
11
10
9
8
SHUTDOWN
IRF7204
0.01 F
C
300pF
50 H
T
V
VALUES SHOWN FOR V
+
OUT
*L
R
1k
Figure 11. High Efficiency 5V to 3.3V/1A Converter
with Extended Input Voltage Range
C
= 1 + R2
C
3300pF
C
1 F
R
0.033
SENSE
MBRS140T3
R1
IRF7201
**IRC LR2010-01-R100-G
*COILTRONICS CTX50-4 Kool M CORE
**
D1
1
2
3
4
5
6
7
1.25V
100pF
P-DRIVE
NC
V
C
INTV
I
SENSE
TH
IN
T
LTC1148HV-3.3
8V TO 14V
OUT
CC
+
–
V
= 5V
IN
SHUTDOWN
R1
10k
1%
R2
30k
1%
C
330 F
20V
N-DRIVE
SENSE
IN
PGND
SGND
+
NC
NC
+
LTC1148 • F12
14
13
12
11
10
9
8
C
220 F
10V
OS-CON
OUT
2
1/2 Si4532
SHUTDOWN
V
5V/3A
OUT
1000pF
50 H
*L
R
0.1
SENSE
MBRS140T3
1/2 Si4532
**
D1
+
4V TO 18V
LTC1148 • F11
C
220 F
10V
OS-CON
+
V
OUT
IN
C
100 F
25V
IN
V
3.3V/1A
OUT