LTC1726 datasheet(2/12 Pages) LINER

Part #	LTC1726

Description	Triple Supply Monitor and 짰 Supervisor with Adjustable Reset and Watchdog Timer

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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2

LTC1726

1726fb

Order Options Tape and Reel: Add #TR

Lead Free: Add #PBF

Lead Free Tape and Reel: Add #TRPBF

Lead Free Part Marking: http://www.linear.com/leadfree/

Terminal Voltage

VCC3, VCC5/VCC25, VCCA ......................... –0.3V to 7V

RST ....................................................... – 0.3V to 7V

WDI ....................................................... – 0.3V to 7V

RT, WT .................................................. – 0.3V to 7V

Operating Temperature Range (Note 3) .. – 40

°C to 85°C

Storage Temperature Range ................ – 65

°C to 150°C

Lead Temperature (Soldering, 10 sec)................ 300

°C

Consult LTC Marketing for parts specified with wider operating temperature ranges.

TJMAX = 125°C, θJA = 200°C/W

(Notes 1, 2)

TJMAX = 125°C, θJA = 150°C/W

ORDER

PART NUMBER

LTC1726ES8-2.5

LTC1726ES8-5

LTC1726IS8-2.5

LTC1726IS8-5

S8 PART MARKING

172625

17265

726I25

1726I5

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VRT3

Reset Threshold VCC3

VCC3 Input Threshold

●

3.036

3.085

3.135

V

VRT5

Reset Threshold VCC5

VCC5 Input Threshold (5V Version)

●

4.600

4.675

4.750

V

VRT25

Reset Threshold VCC25

VCC25 Input Threshold (2.5V Version)

●

2.300

2.337

2.375

V

VRTA

Reset Threshold VCCA

VCCA Input Threshold

●

0.985

1.000

1.015

V

VCC

VCC3 or VCC5 Operating Voltage

RST in Correct Logic State

●

17

V

IVCC3

VCC3 Supply Current

VCC5/VCC25 > VCC3

●

12

µA

VCC5/VCC25 < VCC3, VCC3 = 3.3V

●

16

30

µA

IVCC5

VCC5 Supply Current

VCC5 = 5V

●

16

30

µA

IVCC25

VCC25 Supply Current

VCC25 < VCC3, VCC25 = 2.5V (Note 4)

●

12

µA

IVCCA

VCCA Input Current

VCCA = 1V

●

–15

0

15

nA

RT Charge Current Out

VRT = 0V

●

1.4

2

2.6

µA

WT Charge Current Out

VWT = 0V

●

1.4

2

2.6

µA

RT Discharge Current Out

VRT = 1.3V

●

14

20

26

µA

WT Discharge Current Out

VWT = 1.3V

●

14

20

26

µA

∆tRT

Reset Time-Out Period Variation

CRT = 1500pF Deviation from tRT = 5ms (Note 5)

●

–30

0

30

%

tUV

VCC Undervoltage Detect to RST

VCC25/VCC5, VCC3 or VCCA Less Than Reset

130

µs

Threshold VRT by More Than 1%

The

● denotes specifications which apply over the full operating temperature

range, otherwise specificaitons are at TA = 25°C. VCC3 = 3.3V, VCC5 = 5V, VCC25 = 2.5V, VCCA = VCC3 unless otherwise noted.

1

2

3

4

8

7

6

5

TOP VIEW

RT

WT

RST

WDI

VCC3

VCCA

GND

S8 PACKAGE

8-LEAD PLASTIC SO

VCC25/

VCC5

ORDER

PART NUMBER

LTC1726EMS8-2.5

LTC1726EMS8-5

MS8 PART MARKING

LTKZ

LTLA

1

2

3

4

VCC3

VCC25/VCC5

VCCA

GND

8

7

6

5

RT

WT

RST

WDI

TOP VIEW

MS8 PACKAGE

8-LEAD PLASTIC MSOP

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

ELECTRICAL CHARACTERISTICS

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