LTC2931HF Просмотр технического описания (PDF) - Linear Technology

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LTC2931HF

Confi gurable Six Supply Monitor with Adjustable Reset and Watchdog Timers

Linear Technology 

LTC2931

APPLICATIONS INFORMATION

12V (9.6V THRESHOLD)

LTM4600

VIN

5V

VOUT

RUN

EN

LTC2950-1

VIN

INT

PB

KILL

LT3028

VIN

VOUT 3.3V

SHDN

10k

LT3028

VIN

VOUT 1.8V

SHDN

10k

LTC3704

VIN

VOUT –5.2V

RUN/UVLO

10k

LT3028

VIN

VOUT 2.5V

SHDN

10k

5V

10k 10k

3.3V

1.8V

SYSTEM

LOGIC

–5.2V

2.5V

DONE

12V SUPPLY STATUS

1820k

1%

100k

1%

COMP1 COMP2 COMP3 COMP4 COMP5 COMP6

V1

10k

0.1μF

365k 487k

1% 1%

V2

V3

V4

LTC2931

V5

WDO

V6

100k 121k

1% 1%

RST

R1

16.2k

1%

R2

86.6k

1%

VREF

VPG CRT WDI GND CWT

4.7nF

tRST = 9.4ms

2931 F06

Figure 6. Five Supply Power-Up Sequencer with Push Button (Watchdog Functions Disabled)

2931fb

13

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