-48V Hot-Swap Controllers with External

_______________________________________________________________________________________

3

ELECTRICAL CHARACTERISTICS (continued)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

PWRGD OUTPUT SIGNAL (REFERENCED TO DRAIN)

DRAIN Input Current

10

80

250

µA

DRAIN Threshold for PWRGD

condition, DRAIN decreasing

1.1

1.7

2.0

V

GATE High Threshold

1.0

1.6

2.0

V

10

PWRGD,

PWRGD Output

Leakage

10

µA

PWRGD Low Voltage

(A, E versions)

0.11

0.4

V

PWRGD Low Voltage

0.11

0.4

V

OVERTEMPERATURE PROTECTION

Overtemperature Threshold

Junction temperature, temperature rising

135

°C

Overtemperature Hysteresis

See Thermal Shutdown section

20

°C

AC PARAMETERS

OV High to GATE Low

Figures 1a, 2

0.5

µs

UV Low to GATE Low

Figures 1a, 3

0.4

µs

OV Low to GATE High

Figures 1a, 2

3.3

µs

UV High to GATE High

Figures 1a, 3

8.4

ms

SENSE High to GATE Low

Figures 1a, 4a

1

µs

A, B versions

0.35

0.5

0.65

Current Limit to GATE Low

Time from continuous

current limit to GATE

shutdown (see Overcurrent

Fault Integrator section),

Figures 1b, 4b

E, F versions

1.4

2.0

2.6

ms

Figures 1a, 5a; A and E versions

8.2

DRAIN Low to

PWRGD Low

DRAIN Low to (PWRGD - DRAIN)

High

Figures 1a, 5a; B and F versions

8.2

ms

Figures 1a, 5b; A and E versions

8.2

GATE High to

PWRGD Low

GATE High to (PWRGD - DRAIN)

High

Figures 1a, 5b; B and F versions

8.2

ms

TURN-OFF

Latch-Off Period

(Note 3)

A, B, E, F versions

128 x

ms

Note 1:

unless otherwise specified.

Note 2:

Note 3:

Minimum duration of GATE pulldown following a circuit breaker fault. The MAX5921_ automatically restarts after a circuit

breaker fault. The MAX5939_ is latched off and can be reset by toggling UV low. The GATE pulldown does not release until

Note 4:

The min/max limits are 100% production tested at +25°C and +85°C and guaranteed by design at -40°C.