LTC1728E データシートの表示（PDF） - Linear Technology

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LTC1728E

Micropower Precision Triple Supply Monitors in 8-Lead MSOP and 5-Lead SOT-23 Packages

Linear Technology 

LTC1727/LTC1728

TYPICAL APPLICATIONS

Dual Supply Monitor (3.3V and 5V, Defeat VCCA Input)

3.3V

5V

LTC1728-5

5

VCC3

4

VCC5

3

VCCA

2

GND

1

RST

SYSTEM RESET

1727/28 TA04

Dual Supply Monitor (3.3V or 5V Plus Adjustable)

ADJUSTABLE

SUPPLY

3.3V OR

5V

R1*

R2*

LTC1728-5

10k

5

1

VCC3

RST

4

VCC5

3

VCCA

2

GND

1727/28 TA05

SYSTEM RESET

*TO PRESERVE THRESHOLD ACCURACY, SET PARALLEL

COMBINATION OF R1 AND R2 ≤ 66.5k

REFER TO LTC1728-5 OVERRIDE FUNCTIONS IN

THE APPLICATIONS INFORMATION SECTION

Dual Supply Monitor (3.3V Plus Adjustable)

ADJUSTABLE

SUPPLY

3.3V

R1*

R2*

LTC1728-2.5

5

VCC3

4

VCC25

3

VCCA

2

GND

1

RST

10k

SYSTEM RESET

1727/28 TA06

*TO PRESERVE THRESHOLD ACCURACY, SET PARALLEL

COMBINATION OF R1 AND R2 ≤ 66.5k

Using VCCA Tied to DC/DC Feedback Divider

2.9V

LTC1435

6

VOSENSE

ADJUSTABLE

RESET TRIP

THRESHOLD 2.74V

35.7k

1%

3.3V

2.8k

1%

5V

22.1k

1%

LTC1728-5

5

VCC3

4

VCC5

3

VCCA

2

GND

1

RST

1727/28 TA07

SYSTEM RESET

For more information www.linear.com/LTC1727

17278fd

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