Rainbow-electronics MAX6871 Manual de usuario descargar pdf (Pagina 7)

MAX6870/MAX6871

EEPROM-Programmable Hex/Quad

Power-Supply Sequencers/Supervisors with ADC

_______________________________________________________________________________________ 7

OUTPUT VOLTAGE HIGH vs. SOURCE CURRENT

(PUSH-PULL OUTPUT)

MAX6870/71 toc10

OUT

(mA)

(V)

555040 4510 15 20 25 30 355

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

060

PUSH-PULL TO IN3

IN3 = 5V

PO5–PO8 (MAX6870)

PO3/PO4/PO5 (MAX6871)

OUTPUT VOLTAGE HIGH vs. SOURCE CURRENT

(CHARGE-PUMP OUTPUT)

MAX6870/71 toc11

SOURCE CURRENT (

OUTPUT VOLTAGE HIGH (V)

4321

3.5

4.0

4.5

5.0

5.5

6.0

3.0

MEASURED RELATIVE TO V

ABP

PO1–PO4 (MAX6870)

PO1/PO2 (MAX6871)

MR TO PO_ PROPAGATION DELAY

vs. TEMPERATURE

MAX6870/71 toc12

TEMPERATURE (

MR TO PO_ PROPAGATION DELAY (µs)

6035-15 10

1.55

1.60

1.65

1.70

1.80

1.75

1.85

1.90

1.50

-40 85

MAXIMUM MR TRANSIENT DURATION

vs. MR THRESHOLD OVERDRIVE

MAX6870/71 toc13

MR THRESHOLD OVERDRIVE (mV)

MAXIMUM MR TRANSIENT DURATION (µs)

10010

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

1.1

1.2

1 1000

PO_ ASSERTION OCCURS

ABOVE THIS LINE

OUTPUT VOLTAGE HIGH vs. SOURCE CURRENT

(WEAK PULLUP OUTPUT)

MAX6870/71 toc09

OUT

(mA)

(V)

4.54.03.0 3.51.0 1.5 2.0 2.50.5

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

05.0

WEAK PULLUP

TO ABP

Typical Operating Characteristics (continued)

IN1

= +6.5V to +13.2V, V

IN2

= +10V, V

IN3

–

IN6

= +2.7V to +5.5V, AUXIN_ = GPI_ = GND, MARGIN = MR = DBP, T

= +25°C,

unless otherwise noted.)

ADC ACCURACY

vs. TEMPERATURE

MAX6870/71 toc14

TEMPERATURE (°C)

TOTAL UNADJUSTED ERROR (%)

603510-15

-0.8

-0.6

-0.4

-0.2

0.2

0.4

0.6

0.8

1.0

-1.0

-40 85

IN2

= -12V,

50mV/STEP RANGE

IN3

= 5V,

20mV/STEP RANGE

IN1

= 9V,

25mV/STEP RANGE

AUXIN1

= 1V

FET (IRF7811W)

TURN-ON WITH CHARGE PUMP

MAX6870/71 toc15

10 /di

PO1

10V/div

SOURCE

2V/div

DRAIN

5A/div

SEE FIGURE 9

1 2 3 4 5 6 7 8 9 10 11 12 ... 50 51

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Rainbow-electronics MAX6871 Manual de usuario Pagina 7

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