4

LT1268B/LT1268

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7487

© LINEAR TECHNOLOGY CORPORATION 1994

1268fs, sn1268 LT/GP 0194 10K REV 0 • PRINTED IN THE USA

APPLICATI

TYPICAL

Boost Converter (5V TO 12V)

Q Package

5-Lead DD

T Package

5-Lead TO-220

20

µH

5V

LT1268CT

LT1268 • TA03

FB

1k

1.24k

10.7k

12V, 1.5A

MBR1020

1

µF

1000

µF

25V

GND

+

+

PACKAGE DESCRIPTIO

Dimensions in inches (millimeters) unless otherwise noted.

0.022 ± 0.005

(0.559 ± 0.127)

0.105 ± 0.008

(2.667 ± 0.203)

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

0.050 ± 0.008

(1.270 ± 0.203)

0.175 ± 0.008

(4.445 ± 0.203)

0.060

(1.524)

0.401 ± 0.015

(10.185 ± 0.381)

15° TYP

0.032 ± 0.008

(0.813 ± 0.203)

0.331

+0.012

–0.020

()

8.407

+0.305

–0.508

0.143

+0.012

–0.020

()

3.632

+0.305

–0.508

0.067 ± 0.010

(1.702 ± 0.254)

0.028 – 0.035

(0.711 – 0.889)

0.057 – 0.077

(1.448 – 1.956)

0.139 – 0.153

(3.531 – 3.886)

DIA

0.079 – 0.135

(2.007 – 3.429)

0.380 – 0.420

(9.652 – 10.668)

0.560 – 0.650

(14.224 – 16.510)

0.866 – 0.913

(21.996 – 23.190)

0.970 – 1.050

(24.64 – 26.67)

0.304 – 0.380

(7.722 – 9.652)

0.700 – 0.728

(17.780 – 18.491)

0.035 – 0.055

(0.889 – 1.397)

0.169 – 0.185

(4.293 – 4.699)

0.079 – 0.115

(2.007 – 2.921)

0.149 – 0.230

(3.785 – 5.842)

0.620 ± 0.020

(15.75 ± 0.508)

0.460 – 0.500

(11.68 – 12.70)

0.210 – 0.240

(5.334 – 6.096)

0.055 – 0.090

(1.397 – 2.286)

0.015 – 0.025

(0.381 – 0.635)