Rainbow-electronics MAX5937 Manual do Utilizador descarregar pdf (Página 4)

MAX5936/MAX5937

-48V Hot-Swap Controllers with V

Step Immunity and No R

SENSE

4 _______________________________________________________________________________________

Note 1: All currents into pins are positive and all currents out of pins are negative. All voltages referenced to V

, unless otherwise

specified.

Note 2: All limits are 100% tested at +25°C and +85°C. Limits at -40°C and -10°C are guaranteed by characterization.

Note 3: Delay time from a valid on-condition until the load probe test begins.

Note 4: V

or UVLO voltages below V

UVLO,F

or V

UVLO_REF,F

, respectively, are ignored during this time.

Note 5: The time (V

OUT

- V

) > V

+ overdrive until (V

GATE

- V

) drops to approximately 90% of its initial high value.

Note 6: The time when the PGOOD (PGOOD) condition is met until the PGOOD (PGOOD) signal is asserted.

ELECTRICAL CHARACTERISTICS (continued)

= -10V to -80V, V

= GND - V

, V

STEP_MON

, R

= 200Ω, UVLO open, T

= -40°C to +85°C, unless otherwise noted.

Typical values are at V

= -48V, T

= +25°C.) (Notes 1, 2)

PARAMETER SYMBOL CONDITIONS

MIN TYP MAX

UNITS

LOGIC AND FAULT MANAGEMENT

Autoretry Delay t

RETRY

16 x

OUT

- V

| falling

0.74 x

PGOOD (PGOOD) Assertion

Threshold

Hysteresis

0.26 x

PGOOD (PGOOD) Assertion Delay

Time (Note 6)

0.67 1.26 1.85

PGOOD (PGOOD) Low Voltage V

SINK

= 1mA, referenced to V

OUT,

OUT

< GND - 5V for PGOOD (PGOOD)

0.05 0.4

PGOOD (PGOOD) Open-Drain

Leakage

= -80V, V

PGOOD(PGOOD)

= GND

0.01

1µA

1 2 3 4 5 6 7 8 9 ... 22 23

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