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LTC4557

4557f

TYPICAL PERFOR A CE CHARACTERISTICS

I/O X Short-Circuit Current

vs Temperature

No Load Supply Current vs VBATT

VBATT Quiescent Current

(IVBATT – ICC) vs Load Current

VBATT Shutdown Current

vs Supply Voltage

DVCC Shutdown Current

vs Supply Voltage

Data – I/O Channel, CL = 40pF

Deactivation Sequence,

CVCCX = 1µF

SUPPLY VOLTAGE (V)

2.7

3.1

3.5

4.3

4.7

4557 G01

3.9

5.1

5.5

TA = 25°C

ICCA = ICCB = 0µA

VCCX = 3V

VCCX = 1.8V

DROPOUT

TEMPERATURE (

°C)

–40

5.0

5.5

4557 G02

4.5

4.0

–15

6.0

VDVCC = VBATT = 5.5V

VCCX = 3V

LOAD CURRENT (

µA)

120

140

1000

10000

100000

4557 G03

100

TA = 25°C

VBATT = 3.1V

SUPPLY VOLTAGE (V)

2.7

2.0

2.5

3.0

3.9

4.7

4557 G04

1.5

1.0

3.1

3.5

4.3

5.1

5.5

0.5

VDVCC = 1.8V

TA = –40°C

TA = 25°C

TA = 85°C

SUPPLY VOLTAGE (V)

1.2

0.1

0.3

0.4

0.5

0.7

1.6

3.2

4557 G05

0.2

0.6

2.8

4.8

5.6

5.2

2 2.4

3.6

4.4

VBATT = 5.5V

TA = –40°C TO 85°C

I/0X

1V/DIV

DATA

1V/DIV

200ns/DIV

CL = 40pF

4557 G06

RSTX

5V/DIV

CLKX

5V/DIV

I/OX

5V/DIV

VCCX

2V/DIV

µs/DIV

CVCCX = 1µF

4557 G07

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