LTC1326-2.5 datasheet(3/16 Pages) LINER

Part #	LTC1326-2.5

Description	Micropower Precision Triple Supply Monitors

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Manufacturer	LINER [Linear Technology]

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LTC1326/LTC1326-2.5

132625fc

VRT3

Reset Threshold VCC3

0

°C ≤ TA ≤ 70°C

●

3.094

3.118

3.135

V

–40

°C ≤ TA ≤ 85°C

●

3.052

3.118

3.143

V

VRT5

Reset Threshold VCC5 (LTC1326)

0

°C ≤ TA ≤ 70°C

●

4.687

4.725

4.750

V

–40

°C ≤ TA ≤ 85°C

●

4.625

4.725

4.762

V

VRT25

Reset Threshold VCC25 (LTC1326-2.5) 0°C ≤ TA ≤ 70°C

●

2.344

2.363

2.375

V

–40

°C ≤ TA ≤ 85°C

●

2.312

2.363

2.381

V

VRTA

Reset Threshold VCCA

0

°C ≤ TA ≤ 70°C

●

0.992

1.000

1.007

V

–40

°C ≤ TA ≤ 85°C

●

0.980

1.000

1.007

V

VCC

VCC3 Operating Voltage

RST in Correct Logic State

●

17

V

IVCC3

VCC3 Supply Current

PBR = VCC3

●

20

40

µA

IVCC5

VCC5 Input Current (LTC1326)

VCC5 = 5V

●

410

µA

IVCC25

VCC25 Input Current (LTC1326-2.5)

VCC25 = 2.5V

●

2.8

7

µA

IVCCA

VCCA Input Current

VCCA = 1V

●

–15

0

15

nA

tRST

Reset Pulse Width

RST Low with 10k

Ω Pull-Up to VCC3

0

°C ≤ TA ≤ 70°C

●

140

200

280

ms

–40

°C ≤ TA ≤ 85°C

●

140

200

300

ms

tSRST

Soft Reset Pulse Width

SRST Low with 10k

Ω Pull-Up to VCC3

●

50

100

200

µs

tUV

VCC Undervoltage Detect to RST

VCC25, VCC3 or VCCA Less Than Reset

13

µs

Threshold VRT by More Than 1%

IPBR

PBR Pull-Up Current

PBR = 0V

0

°C ≤ TA ≤ 70°C

●

37

10

µA

–40

°C ≤ TA ≤ 85°C

●

37

15

µA

VIL

PBR, RST Input Low Voltage

●

0.8

V

VIH

PBR, RST Input High Voltage

●

2V

tPW

PBR Min Pulse Width

●

40

ns

tDB

PBR Debounce

Deassertion of PBR Input to SRST

●

20

35

ms

Output (PBR Pulse Width = 1

µs)

tPB

PBR Assertion Time for Transition

PBR Held Less Than VIL

from Soft to Hard Reset Mode

0

°C ≤ TA ≤ 70°C

●

1.4

2.0

2.8

s

–40

°C ≤ TA ≤ 85°C

●

1.4

2.0

3.0

s

VOL

RST Output Voltage Low

ISINK = 5mA

●

0.15

0.4

V

ISINK = 100µA,

VCC3 = 1V, VCC5 = 0V

●

0.05

0.4

V

0

°C ≤ TA ≤ 70°CVCC3 = 0V, VCC5 = 1V

●

0.05

0.4

V

VCC3 = 1V, VCC5 = 1V

●

0.05

0.4

V

ISINK = 100µA,

VCC3 = 1.1V, VCC5 = 0V

●

0.05

0.4

V

–40

°C ≤ TA ≤ 85°CVCC3 = 0V, VCC5 = 1.1V

●

0.05

0.4

V

VCC3 = 1.1V, VCC5 = 1.1V

●

0.05

0.4

V

ISINK = 100µA,

VCC3 = 1V, VCC25 = 0V

●

0.05

0.4

V

0

°C ≤ TA ≤ 70°CVCC3 = 0V, VCC25 = 1V

●

0.05

0.4

V

VCC3 = 1V, VCC25 = 1V

●

0.05

0.4

V

ISINK = 100µA,

VCC3 = 1.1V, VCC25 = 0V

●

0.05

0.4

V

–40

°C ≤ TA ≤ 85°CVCC3 = 0V, VCC25 = 1.1V

●

0.05

0.4

V

VCC3 = 1.1V, VCC25 = 1.1V

●

0.05

0.4

V

SRST Output Voltage Low

ISINK = 2.5mA

●

0.15

0.4

V

RST Output Voltage Low

ISINK = 2.5mA

●

0.15

0.4

V

ELECTRICAL CHARACTERISTICS

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

The

● denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VCC3 = 3.3V, VCC5 = 5V (for LTC1326),VCC25 = 2.5V (for LTC1326-2.5),

VCCA = VCC3, TA = 25°C unless otherwise noted.

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