LTC1727IS8-5PBF(Rev_B) データシートの表示（PDF） - Linear Technology

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LTC1727IS8-5PBF
(Rev.:Rev_B)

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

Linear Technology 

LTC1727/LTC1728

Electrical Characteristics All except LTC1728-1.8/LTC1728-3.3. The l denotes specifications which

apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VCC3 = 3.3V, VCC5 = 5V,

VCC25 = 2.5V, VCCA = VCC3 unless otherwise noted.

SYMBOL PARAMETER

CONDITIONS

MIN

TYP MAX UNITS

IVCC3 VCC3 Supply Current

IVCC25

IVCC5

VCC25 Supply Current

VCC5 Supply Current

VCC5/VCC25 > VCC3

l

1

2

µA

VCC5/VCC25 < VCC3, VCC3 = 3.3V (Note 4)

l

10

20

µA

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

l

1

2

µA

VCC5 = 5V, VCC3 < VCC5

l

10

20

µA

IVCCA VCCA Input Current

VCCA = 1V

–40°C < TA < 125°C

tRST

Reset Pulse Width

RST Low with 10k Pull-Up to VCC3 (Note 5)

–40°C < TA < 125°C

tUV

VCC Undervoltage Detect to RST

or COMPX

VCC5, VCC25, VCC3 or VCCA Less Than Reset

Threshold VRT by More Than 1% (Note 5)

VOL

Output Voltage Low, RST, COMPX

ISINK = 2.5mA, VCC3 = 3V, VCC5/VCC25 = 0V

ISINK = 100µA, VCC3 = 1V, VCC5/VCC25 = 0V

ISINK = 100µA, VCC3 = 0V, VCC5/VCC25 = 1V

ISINK = 100µA, VCC3 = 1V, VCC5/VCC25 = 1V

VOH

Output Voltage High, RST, COMPX (Note 6) ISOURCE = 1µA

LTC1727-5/LTC1728-5 Only

l –15

l –20

l 140

l 140

0

15

nA

0

50

nA

200 280 ms

350 ms

110

µs

l

0.15 0.4

V

l

0.05 0.3

V

l

0.05 0.3

V

l

0.05 0.3

V

l VCC3 – 1

V

VOVR VCC5 Reset Override Voltage (Note 7)

Override VCC5 Ability to Assert RST

VCC3 ±0.025

V

LTC1728-1.8 The l denotes specifications which apply over the full operating temperature range, otherwise specifications are at

TA = 25°C. VCC3 = 3V, VCC18 = 1.8V, VCCA = VCC3 unless otherwise noted.

SYMBOL PARAMETER

CONDITIONS

MIN TYP MAX UNITS

VRT3

Reset Threshold VCC3

VCC3 Input Threshold

l 2.760 2.805 2.850

V

VRT18

VRTA

VCCOP

Reset Threshold VCC18

Reset Threshold VCCA

VCC3, VCC18 Operating Voltage

VCC18 Input Threshold

VCCA Input Threshold

RST in Correct Logic State

l 1.656 1.683 1.710

V

l 0.985 1.000 1.015

V

l

1

7

V

IVCC3

IVCC18

VCC3 Supply Current

VCC18 Supply Current

VCC18 > VCC3

VCC18 < VCC3, VCC3 = 3V (Note 4)

l

1

2

µA

l

10

20

µA

VCC18 < VCC3, VCC18 = 1.8V (Note 4)

l

1

2

µA

IVCCA

VCCA Input Current

VCCA = 1V

l –15

0

15

nA

tRST

Reset Pulse Width

RST Low (Note 5)

l 140

200

280

ms

tUV

VCC Undervoltage Detect to RST

VCC18, VCC3 or VCCA Less Than Reset (Note 5)

Threshold VRT by More Than 1%

110

µs

VOL

Output Voltage Low, RST

ISINK = 2.5mA, VCC3 = 3V, VCC18 = 0V

l

ISINK = 100µA, VCC3 = 1V, VCC18 = 0V

l

ISINK = 100µA, VCC3 = 0V, VCC18 = 1V

l

ISINK = 100µA, VCC3 = 1V, VCC18 = 1V

l

0.15

0.4

V

0.05

0.3

V

0.05

0.3

V

0.05

0.3

V

VOH

Output Voltage High, RST

ISOURCE = 1µA (Note 6)

l VCC3 – 1

V

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