Rainbow-electronics MAX5970 Manual de usuario descargar pdf (Pagina 3)

0V to 16V, Dual Hot-Swap Controller with 10-Bit

Current and Voltage Monitor and 4 LED Drivers

MAX5970

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(V

IN

= 2.7V to 16V, T

A

= -40NC to +85NC, unless otherwise noted. Typical values are at V

IN

= 3.3V and T

A

= +25NC.) (Note 2)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Current Measurement Error

(100mV Range)

V

MON_

= 0V

V

SENSE_

- V

MON_

= 20mV -2.70 +2.43

% FS

V

SENSE_

- V

MON_

= 80mV -3.63 +4.56

V

MON_

= 2.5V

to 16V

V

SENSE_

- V

MON_

= 20mV -3.14 +3.19

V

SENSE_

- V

MON_

= 80mV -3.80 +3.93

Fast Current-Limit Threshold

Error (25mV Range)

V

MON_

= 0V

Circuit breaker, DAC = 102 -2.106 +0.888

mV

Circuit breaker, DAC = 255 -2.986 +0.641

V

MON_

= 2.5V

to 16V

Circuit breaker, DAC = 102 -3.000 +1.000

Circuit breaker, DAC = 255 -3.500 +1.500

Fast Current-Limit Threshold

Error (50mV Range)

V

MON_

= 0V

Circuit breaker, DAC = 102 -3.1188 +0.926

mV

Circuit breaker, DAC = 255 -4.873 +0.3421

V

MON_

= 2.5V

to 16V

Circuit breaker, DAC = 102 -3.2668 +0.9228

Circuit breaker, DAC = 255 -4.7 +1.0212

Fast Current-Limit Threshold

Error (100mV Range)

V

MON_

= 0V

Circuit breaker, DAC = 102 -4.7987 +1.1812

mV

Circuit breaker, DAC = 255 -8.9236 +0.202

V

MON_

= 2.5V

to 16V

Circuit breaker, DAC = 102 -4.9991 +0.6374

Circuit breaker, DAC = 255 -8.262 +1

Slow Current-Limit Threshold

Error (25mV Range)

V

MON_

= 0V

Circuit breaker, DAC = 102 -1.7965 +1.5496

mV

Circuit breaker, DAC = 255 -1.86 +1.5916

V

MON_

= 2.5V

to 16V

Circuit breaker, DAC = 102 -2.149 +1.9868

Circuit breaker, DAC = 255 -2.2285 +1.9982

Slow Current-Limit Threshold

Error (50mV Range)

V

MON_

= 0V

Circuit breaker, DAC = 102 -2.3992 +1.8723

mV

Circuit breaker, DAC = 255 -2.5146 +2.1711

V

MON_

= 2.5V

to 16V

Circuit breaker, DAC = 102 -2.4716 +2.181

Circuit breaker, DAC = 255 -2.7421 +2.1152

Slow Current-Limit Threshold

Error (100mV Range)

V

MON_

= 0V

Circuit breaker, DAC = 102 -3.3412 +2.989

mV

Circuit breaker, DAC = 255 -3.8762 +3.6789

V

MON_

= 2.5V

to 16V

Circuit breaker, DAC = 102 -3.2084 +2.7798

Circuit breaker, DAC = 255 -3.8424 +2.6483

Fast Circuit-Breaker

Response Time

t

FCB

Overdrive = 10% of current-sense range 2

Fs

Slow Current-Limit Response

Time

t

SCB

Overdrive = 4% of current-sense range 2.4

ms

Overdrive = 8% of current-sense range 1.2

Overdrive = 16% of current-sense range 0.6

THREE-STATE INPUTS

A_, IRNG_, MODE, PROT

Low Current

I

IN_LOW

Input voltage = 0.4V -40

FA

A_, IRNG_, MODE, PROT T

High Current

I

IN_HIGH

Input voltage = V

REG

- 0.2V 40

FA

A_, IRNG_, MODE, PROT

Open Current

I

FLOAT

Maximum source/sink current for open state -4 +4

FA

1 2 3 4 5 6 7 8 ... 40 41

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