Datasheet

24
LT1959
PART NUMBER DESCRIPTION COMMENTS
LT1074/LT1076 Step-Down Switching Regulators 40V Input, 100kHz, 5A and 2A
LTC
®
1148/LTC1149 High Efficiency Synchronous Step-Down Switching Regulator External FET Switches
LT1370 High Efficiency DC/DC Converter 42V, 6A, 500kHz Switch
LT1371 High Efficiency DC/DC Converter 35V, 3A, 500kHz Switch
LT1372/LT1377 500kHz and 1MHz High Efficiency 1.5A Switching Regulators Boost Topology
LT1374 High Efficiency Step-Down Switching Regulator 25V, 4.5A, 500kHz Switch
LT1506 High Efficiency Step-Down Switching Regulator 15V, 4.5A, 500kHz Switch
LT1624 N-Channel Switching Regulator Controller SO-8 Package
LT1625 NoR
SENSE
TM
Step Down-Switching Regulator Controller Step-Down, Synchronous
LT1628 2-Phase Synchronous Step-Down Switching Regulator Controller High Efficiency, Low Ripple
LTC1735 High Efficiency Step-Down Converter Drives External MOSFETs
LT1775 High Power NoR
SENSE
Switching Regulator Controller Step-Down, Synchronous, Current Mode
1959fs, sn1959 LT/TP 0500 4K • PRINTED IN
USA
 LINEAR TECHNOLOGY CORPORATION 2000
Dimensions in inches (millimeters) unless otherwise noted.
PACKAGE DESCRIPTION
U
RELATED PARTS
R Package
7-Lead Plastic DD Pak
(LTC DWG # 05-08-1462)
S8 Package
8-Lead Plastic Small Outline (Narrow 0.150)
(LTC DWG # 05-08-1610)
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
●
www.linear-tech.com
R (DD7) 1098
0.026 – 0.036
(0.660 – 0.914)
0.143
+0.012
–0.020
()
3.632
+0.305
–0.508
0.050
(1.27)
BSC
0.013 – 0.023
(0.330 – 0.584)
0.095 – 0.115
(2.413 – 2.921)
0.004
+0.008
–0.004
()
0.102
+0.203
–0.102
0.050
± 0.012
(1.270 ± 0.305)
0.059
(1.499)
TYP
0.045 – 0.055
(1.143 – 1.397)
0.165 – 0.180
(4.191 – 4.572)
0.330 – 0.370
(8.382 – 9.398)
0.060
(1.524)
TYP
0.390 – 0.415
(9.906 – 10.541)
15
° TYP
0.300
(7.620)
0.075
(1.905)
0.183
(4.648)
0.060
(1.524)
0.060
(1.524)
0.256
(6.502)
BOTTOM VIEW OF DD PAK
HATCHED AREA IS SOLDER PLATED
COPPER HEAT SINK
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 1298
0.053 – 0.069
(1.346 – 1.752)
0.014 – 0.019
(0.355 – 0.483)
TYP
0.004 – 0.010
(0.101 – 0.254)
0.050
(1.270)
BSC
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)
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
*
**
No R
SENSE
is a trademark of Linear Technology Corporation