16
LTC1147-3.3
LTC1147-5/LTC1147L
sn1147 1147fds
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear-tech.com
TYPICAL APPLICATION
U
LINEAR TECHNOLOGY CORPORATION 1993
LT/TP 0698 REV D 2K • PRINTED IN USA
PART NUMBER DESCRIPTION COMMENTS
LTC1142 Dual High Efficiency Synchronous Step-Down Switching Regulator Dual Version of LTC1148
LTC1143 Dual High Efficiency Step-Down Switching Regulator Controller Dual Version of LTC1147
LTC1147 High Efficiency Step-Down Switching Regulator Controller Nonsynchronous, 8-Lead, V
IN
≤ 16V
LTC1148 High Efficiency Step-Down Switching Regulator Controller Synchronous, V
IN
≤ 20V
LTC1149 High Efficiency Step-Down Switching Regulator Synchronous, V
IN
≤ 48V, for Standard Threshold FETs
LTC1159 High Efficiency Step-Down Switching Regulator Synchronous, V
IN
≤ 40V for Logic Level MOSFETS
LTC1174 High Efficiency Step-Down and Inverting DC/DC Converter 0.5A Switch, V
IN
≤ 18.5V, Comparator
LTC1265 High Efficiency Step-Down DC/DC Converter 1.2A Switch, V
IN
≤ 13V, Comparator
LTC1267 Dual High Efficiency Synchronous Step-Down Switching Regulators Dual Version of LTC1159
LTC1435 High Efficiency Low Noise Synchronous Step-Down Switching Regulator 16-Pin Narrow SO/SSOP; Constant Frequency
S8 Package
8-Lead Plastic Small Outline (Narrow 0.150)
(LTC DWG # 05-08-1610)
3.3V/2A Output High Efficiency Regulator
1
2
3
4
0.150 – 0.157**
(3.810 – 3.988)
8
7
6
5
0.189 – 0.197*
(4.801 – 5.004)
0.228 – 0.244
(5.791 – 6.197)
0.016 – 0.050
0.406 – 1.270
0.010 – 0.020
(0.254 – 0.508)
× 45°
0°– 8° TYP
0.008 – 0.010
(0.203 – 0.254)
SO8 0996
0.053 – 0.069
(1.346 – 1.752)
0.014 – 0.019
(0.355 – 0.483)
0.004 – 0.010
(0.101 – 0.254)
0.050
(1.270)
TYP
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
*
**
PACKAGE DESCRIPTIO
U
Dimensions in inches (millimeters) unless otherwise noted.
RELATED PARTS
1
2
3
4
8
7
6
5
V
IN
C
T
I
TH
SENSE
–
PDRIVE
GND
SHDN
SENSE
+
LTC1147-3.3
SHUTDOWN
0.1µF
C
C
3300pF
R
C
1k
C
T
220pF
0.01µF
+
C
IN
22µF
25V × 2
LTC1147 • F12
R
SENSE
**
0.05Ω
L*
20µH
Si4431DY
V
IN
4V TO 14V
+
D1
MBRS130LT3
C
OUT
220µF
10V
AVX
V
OUT
3.3V/2A
COILTRONICS CTX20-4
KRL SP-1/2-A1-OR050
*
**
