24

LT1959

PART NUMBER

DESCRIPTION

COMMENTS

LT1074/LT1076

Step-Down Switching Regulators

40V Input, 100kHz, 5A and 2A

LTC

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

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

Step-Down, Synchronous, Current Mode

1959f LT/TP 0500 4K • PRINTED IN USA

©LINEAR TECHNOLOGY CORPORATION 2000

Dimensions in inches (millimeters) unless otherwise noted.

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

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

*

**