LTC1142-ADJ Linear Technology, LTC1142-ADJ Datasheet - Page 18

• Manufacturer Part Number: LTC1142-ADJ
• Description: Dual High Efficiency Synchronous Step-Down Switching Regulators
• Manufacturer: Linear Technology

2.5V/1.5A
LTC1142/LTC1142L/LTC1142HV
TYPICAL APPLICATIONS
18
V
C
220 F
3.3V/3A
OUT1
OUT1
V
10V
OUT3
2
+
49.9k
49.9k
R
0.033
+
R
0.075
1%
1%
SENSE3
R2
R1
SENSE1
C
100 F
10V
R
R
OUT3
3
SENSE3
SENSE5
MBRS130T3
10 H
: KRL SL-C1-1/2-R033J
: KRL SL-C1-1/2-R050J
+
MBRS130T3
22 F
L1
C
25V
R
R
IN3
100pF
SENSE1
SENSE2
D1
C
22 F
35V
33 H
2
Figure 12. LTC1142HV-ADJ High Efficiency Regulator with 3.3V/2A and 2.5V/1.5A Outputs
IN1
L1
2
D1
: KRL SL-C1-1/2-1R075J
: KRL SL-C1-1/2-1R050J
+
Figure 13. LTC1142HV High Efficiency Regulator with 3.3V/3A and 5V/2A Outputs
1000pF
N-CH
Si9410DY
P-CH
Si9433DY
N-CH
Si9410DY
1000pF
P-CH
Si9430DY
0.22 F
L1: COILTRONICS CTX10-4
L2: COILTRONICS CTX20-4
0.22 F
U
23
28
1
6
28
23
PDRIVE 3
SENSE
SENSE
NDRIVE 3
PGND3 SGND3 C
1
2
6
V
IN3
N
SENSE
PDRIVE 1
L1: COILTRONICS CTX33-4
L2: COILTRONICS CTX25-4
4
SENSE
NDRIVE 1
PGND1 SGND1 C
V
24
V
FB1
–
+
IN1
3
3
5
24
+
–
1
1
SHUTDOWN 3
3
SHUTDOWN 1
4
T3
25
C
200pF
2
T3
>1.5V = SHUTDOWN
T1
25
C
330pF
0V = NORMAL
3
I
>1.5V = SHUTDOWN
T1
TH3
5.2V TO 8V
LTC1142HV
27
C
3300pF
R
510
0V = NORMAL
LTC1142HV-ADJ
C3
I
V
4.5V TO 18V
C3
TH1
IN
27
C
3300pF
R
1k
C1
I
V
TH5
C1
IN
13
C
3300pF
R
1k
SHUTDOWN 5
C5
I
C5
TH2
13
C
3300pF
SHUTDOWN 2
R
1k
C
C2
C2
T5
11
C
150pF
16
T5
C
T2
SGND5 PGND5
11
17
C
330pF
T2
17
SGND2 PGND2
NDRIVE 5
PDRIVE 5
SENSE
SENSE
10
18
V
NDRIVE 2
PDRIVE 2
SENSE
SENSE
IN5
18
+
–
V
5
5
IN2
V
19
10
FB2
15
14
9
20
+
–
2
2
0.22 F
15
14
16
9
20
Si9410DY
Si9430DY
0.22 F
1000pF
Si9410DY
N-CH
Si9430DY
P-CH
1000pF
N-CH
P-CH
+
D2
MBRS130T3
C
22 F
25V
D2
MBRS130T3
20 H
IN5
2
L2
25 H
L2
100pF
R
0.05
+
SENSE5
+
C
22 F
35V
R
0.05
IN2
SENSE2
2
R4
84.5k
1%
R3
51k
1%
C
220 F
10V
OUT5
V
5V/2A
2
1142 F13
OUT5
+
C
220 F
10V
1142 F12
V
3.3V/2A
OUT2
2
OUT2