LT1776CS8 datasheet(6/20 Pages) LINER

부품명	LT1776CS8

상세설명	Wide Input Range, High Efficiency, Step-Down Switching Regulator

PDF	20 Pages

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제조업체	LINER [Linear Technology]

홈페이지	http://www.linear.com

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LT1776

10% and 90% duty cycle. The sync function is internally

disabled if the FB pin voltage is low enough to cause

oscillator slowdown. If unused, this pin should be grounded.

FB (Pin 7): This is the inverting input to the feedback

amplifier. The noninverting input of this amplifier is inter-

nally tied to the 1.24V reference. This pin also slows down

the frequency of the internal oscillator when its voltage is

PIN FUNCTIONS

abnormally low, e.g., 2/3 of normal or less. This feature

helps maintain proper short-circuit protection.

VC (Pin 8): This is the control voltage pin which is the

output of the feedback amplifier and the input of the

current comparator. Frequency compensation of the over-

all loop is effected by placing a capacitor, (or in most cases

a series RC combination) between this node and ground.

BLOCK DIAGRA

SWDR

SWON

BOOST

1776 BD

BOOST

SWOFF

LOGIC

OSC

BIAS

VTH

VBG

GND

SYNC

SHDN

VCC

AMP

BOOST

COMP

RSENSE

COMP

VSW

VIN

LT1776CS8 데이터시트(PDF) 6 Page - Linear Technology