LTC2908 データシートの表示（PDF） - Linear Technology

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LTC2908

Precision Six Input Supply Monitor

Linear Technology 

LTC2908

TYPICAL PERFORMANCE CHARACTERISTICS

Specifications are at TA = 25°C unless otherwise noted.

RST Output Voltage vs V1 with

10k Pull-Up Resistor to V1

RST Output Voltage vs V1 with

10k Pull-Up Resistor to V1

5.0

V1 = V2 (A1/B1)

V3 = 2.5V (A1)/V3 = 1.8V (B1)

4.0

V4 = 1.8V (A1)/V4 = 1.5V (B1)

VADJ1 = VADJ2 = VADJ3 =

VADJ4 = VADJ5 = 0.55V

3.0

VRT33

LTC2908-B1

2.0

0.4

V3 = V4 = VADJ1 =

VADJ2 = GND (A1/B1)

VADJ1 = VADJ2 = VADJ3 =

0.3

VADJ4 = VADJ5 = GND (C1)

V1 = INPUT

0.2

V2 = GND

1.0

0

0

VRT25

LTC2908-C1

VRT50

LTC2908-A1

1

2

3

4

5

V1 (V)

0.1

0

0

V2 = V1

0.2

0.4

0.6

0.8

V1 (V)

2908 G13

2908 G14

RST Pull-Down Current vs

Supply Voltage

LTC2908-C1

4.0

VCC = V1

3.5 VADJ1 = VADJ2 = VADJ3 =

VADJ4 = VADJ5 = 0.55V

3.0

RST AT 150mV

RST Pull-Down Current vs

Supply Voltage with 2 Inputs

LTC2908-A1/LTC29089-B1

10

VCC = V1 = V2

V3 = V4 = VADJ1 = VADJ2 = GND

1

RST AT 150mV

2.5

2.0

0.1

1.5

RST AT 50mV

RST AT 50mV

1.0

0.01

0.5

0

0

VRT25

LTC2908-C1

0.5

1.0

1.5

2.0 2.5

SUPPLY VOLTAGE VCC (V)

2928 G25

RST Output Voltage Low vs

RST Pull-Down Current

LTC2908-A1

0.8

V1 = 5.0V

0.7

V2 = 3.3V

V3 = 2.5V

0.6 V4 = 1.8V

VADJ1 = VADJ2 = 0.4V

0.5

85°C

–40°C

0.4

25°C

0.3

0.001

0

0.2

0.4 0.6 0.8

1

SUPPLY VOLTAGE, VCC (V)

2908 G16

RST Output Voltage Low vs

RST Pull-Down Current

LTC2908-B1

0.8

V1 = 3.3V

0.7

V2 = 2.5V

V3 = 1.8V

0.6 V4 = 1.5V

VADJ1 = VADJ2 = 0.4V

0.5

85°C

–40°C

0.4

25°C

0.3

0.2

0.2

0.1

0.1

0

0 5 10 15 20 25 30 35

RST PULL-DOWN CURRENT, IRST (mA)

2908 G18

0

0

5

10

15

20

25

RST PULL-DOWN CURRENT, IRST (mA)

2908 G19

6

RST Pull-Down Current vs

Supply Voltage

LTC2908-A1/LTC2908-B1

6

VCC = V1 = V2

V3 = 2.5V (A1)/V3 = 1.8V (B1)

5 V4 = 1.8V (A1)/V4 = 1.5V (B1)

VADJ1 = VADJ2 = 0.55V

4

RST AT

150mV

3

2

RST AT

1

50mV

VRT33

VRT50

LTC2908-B1 LTC2908-A1

0

0

1

2

3

4

5

SUPPLY VOLTAGE, VCC (V)

2908 G15

RST Pull-Down Current vs

Supply Voltage with 1 Input

10

VCC = V1

V2 = V3 = V4 = VADJ1 = VADJ2 =

VADJ3 = VADJ4 = VADJ5 = GND

1

RST AT 150mV

0.1

RST AT 50mV

0.01

0.001

0

0.2

0.4 0.6 0.8

1

SUPPLY VOLTAGE, VCC (V)

2908 G17

RST Output Voltage Low vs

RST Pull-Down Current

LTC2908-C1

1.20

V1 = 2.5V

VADJ1 = VADJ2 = VADJ3 =

1.0 VADJ4 = VADJ5 = 0.4V

85°C

25°C

0.80

–40°C

0.60

0.40

0.20

0.00

0.0 5.0 10.0 15.0 20.0 25.0

RST PULL-DOWN CURRENT, IRST (mA)

2908 G23

2908fd

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