LTC2931HF データシートの表示（PDF） - Linear Technology

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LTC2931HF

Confi gurable Six Supply Monitor with Adjustable Reset and Watchdog Timers

Linear Technology 

LTC2931

PIN FUNCTIONS

COMP2 (Pin 18): Comparator Output 2. Real-time logic

output with weak 6μA pull-up to V2. Pulls high when V2

is above its reset threshold. May be pulled greater than

V2 using external pull-up. Leave open if unused.

V6 (Pin 19): Adjustable Voltage Input 6. High impedance

comparator input with 0.5V typical threshold. See

Applications Information for details. Tie to V1 if unused.

COMP6 (Pin 20): Comparator Output 6. Real-time logic

output with weak 6μA pull-up to V2. Pulls high when V6

is above its reset threshold. May be pulled greater than

V2 using external pull-up. Leave open if unused.

BLOCK DIAGRAM

VREF

1.210V

14

VPG

13

V1

6

V2

16

V3

5

V4

15

V5

2

V6

19

CRT

7

CRT

GND

12

8

BUFFER

BANDGAP

REFERENCE

A/D

4–

RESISTIVE

DIVIDER

CMP1-4

4

MATRIX

4+

–

+ CMP5

0.5V

+

CMP6

–

V1

POWER

DETECT

VCC

V2

V2 V2

6μA

V2

6μA

V2

4

6μA

6μA

V2

6μA

COMP1

4

COMP2

18

COMP3

3

COMP4

17

V2

6μA

COMP5

1

4

2μA

VCC

10μA

VCC

COMP6

20

V2

6μA

ADJUSTABLE

RESET PULSE

GENERATOR

22μA

TRANSITION

DETECT

WATCHDOG

TIMER

VCC

RST

8

V2

6μA

WDO

9

2μA

22μA

10 WDI

11 CWT

CWT

2931 BD

2931fb

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