LTC6992IS6-2-TRPBF 데이터 시트보기 (PDF) - Analog Devices

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LTC6992IS6-2-TRPBF

TimerBlox: Voltage-Controlled Pulse Width Modulator (PWM)

Analog Devices 

LTC6992-1/LTC6992-2/

LTC6992-3/LTC6992-4

BLOCK DIAGRAM (S6 Package Pin Numbers Shown)

R1 DIV

4

R2

V+

5

4-BIT A/D

CONVERTER

DIGITAL

FILTER

POL

OUTPUT

POLARITY

MASTER OSCILLATOR

fOSC = 1MHz • 50kΩ •

ISET

VSET

MCLK

PROGRAMMABLE DIVIDER

÷1, 4, 16, 64, 256, 1024, 4096, 16384

PULSE WIDTH MODULATOR

DUTY CYCLE = VMOD(LIM) – 0.1•VSET

0.8 • VSET

HALT OSCILLATOR

IF ISET < 500nA

DISABLE OUTPUT

UNTIL SETTLED

VMOD(LIM)

POR

VOLTAGE LIMITER

OUT

6

tON

tOUT

D

=

tON

tOUT

VSET = 1V

3

ISET SET

RSET

+–

VREF

1V

2

GND

VMOD

1

MOD

6992 BD

Rev. D

14

For more information www.analog.com

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