5

LT1271/LT1269

S

APPLICATI

TYPICAL

Boost Converter (5V to 12V)

1

µF

100

µH*

MBR330

10.7k

1271/69 TA03

5V

12V

0.5A

LT1271

FB

GND

1.24k

100

µF

25V

1k

* COILTRONICS CTX100-2-52

+

PACKAGE DESCRIPTIO

Dimensions in inches (millimeters) unless otherwise noted.

Q Package

5-Lead Plastic DD Pak

(LTC DWG # 05-08-1461)

Q(DD5) 0396

0.028 – 0.038

(0.711 – 0.965)

0.143

+0.012

–0.020

()

3.632

+0.305

–0.508

0.057 – 0.077

(1.447 – 1.955)

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