ltc1149-5 Linear Technology Corporation, ltc1149-5 Datasheet - Page 20

• Manufacturer Part Number: ltc1149-5
• Description: High Efficiency Synchronous Step-down Switching Regulators
• Manufacturer: Linear Technology Corporation

PACKAGE DESCRIPTIO
(0.203 – 0.254)
PART NUMBER
LTC1148HV
LTC1159
LTC1435A
LTC1438
LTC1149
LTC1149-3.3/LTC1149-5
20
TYPICAL
RELATED PARTS
0.008 – 0.010
**
*
DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
(0.254 – 0.508)
0.010 – 0.020
+
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone] www.linear-tech.com
0.016 – 0.050
0.406 – 1.270
3.3 F
APPLICATION
45
DESCRIPTION
High Efficiency, Synchronous Step-Down Switching Regulator
High Efficiency, Synchronous Step-Down Switching Regulator
High Efficiency, Low Noise, Synchronous Switching Regulator
Dual, Low Noise, Synchronous Switching Regulator
1N4148
300pF
0.047 F
0 – 8 TYP
1k
(0.355 – 0.483)
0.068 F
3300pF
0.014 – 0.019
(1.346 – 1.752)
0.053 – 0.069
Figure 17. High Efficiency 24V Input 12V/3A Output Regulator
**KRL SL-1-C1-0R033J
*HURRICANE LAB HL-EK210M
U
1
2
3
4
5
6
7
8
PGATE
V
V
PDRIVE
V
C
I
SENSE
TH
IN
CC
CC
T
U
16-Lead Plastic Small Outline (Narrow 0.150)
–
LTC1149
Dimensions in inches (millimeters) unless otherwise noted.
SENSE
SHDN2
NGATE
RGND
PGND
SGND
(1.270)
0.050
1N4148
CAP
TYP
V
(LTC DWG # 05-08-1610)
FB
+
16
15
14
13
12
11
10
9
S Package
SHUTDOWN
(0.101 – 0.254)
0.004 – 0.010
100pF
1000pF
20V TO 30V
V
IN
MTP23P06
MTP36N06E
100
100
(5.791 – 6.197)
0.228 – 0.244
COMMENTS
4V < V
4V < V
3.5V < V
3.5V < V
100 H
L*
IN
IN
MBR160
IN
IN
< 20V
< 40V, I
16
1
< 36V, N-Channel Driver
< 36V, N-Channel Driver
15
+
2
SHUTDOWN
R2
172k
1%
R1
20k
1%
220 F
50V
14
3
1149fa LT/TP 0898 REV A 2K • PRINTED IN USA
(9.804 – 10.008)
0.386 – 0.394*
13
4
LINEAR TECHNOLOGY CORPORATION 1993
= 20 A
12
5
+
R
0.033
11
6
SENSE
150 F
16V 2
OS-CON
CONNECTION
V
12V/3A
**
GROUND
OUT
OUTPUT
10
7
1149 F17
9
8
(3.810 – 3.988)
0.150 – 0.157**
S16 0695