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LT1512

APPLICATIONS INFORMATION

from 24鈩?to 200鈩? This causes a known increase in full-

scale charging current (PWM = 0) of 3% due to the 5k input

resistance of the I

FB

pin. Note that 100% duty cycle gives full

charging current and that very low duty cycles (especially

zero!) will not operate correctly. Very low duty cycle (<10%)

is a problem because the peak detector requires a finite

up-time to reset C6.

More Help

Linear Technology Field Application Engineers have a CAD

spreadsheet program for detailed calculations of circuit

operating conditions, and our Applications Department is

always ready to lend a helping hand. For additional informa-

tion refer to the LT1372 data sheet. This part is identical to

the LT1512 except for the current amplifier circuitry.

PACKAGE DESCRIPTION

Dimensions in inches (millimeters) unless otherwise noted.

N8 Package

8-Lead PDIP (Narrow 0.300)

(LTC DWG # 05-08-1510)

0.400*

(10.160)

MAX

8

7

6

5

0.300 鈥?0.325

(7.620 鈥?8.255)

0.009 鈥?0.015

(0.229 鈥?0.381)

(

+0.025

0.325 鈥?.015

+0.635

8.255

鈥?.381

)

*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.

MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm)

10

U

U

W

U

U

0.255

鹵

0.015*

(6.477

鹵

0.381)

1

2

3

4

0.130

鹵

0.005

(3.302

鹵

0.127)

0.045 鈥?0.065

(1.143 鈥?1.651)

0.065

(1.651)

TYP

0.005

(0.127)

MIN

0.100

鹵

0.010

(2.540

鹵

0.254)

0.125

(3.175)

MIN

0.018

鹵

0.003

(0.457

鹵

0.076)

0.015

(0.380)

MIN

N8 0695

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