3V to 12V Current-Limiting Hot Swap Controllers

with Autoretry, DualSpeed/BiLevel Fault Protection

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3

ELECTRICAL CHARACTERISTICS (continued)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Slow Turn-Off Time

(triggered by either the ON input or the

GND

60

µs

Fast Turn-Off Time

(triggered by the fast comparator, during

15

µs

Maximum Gate Protection

Voltage

Voltage at which internal zener clamp

circuitry is triggered, measured with

(MAX4273)

6.7

7.5

V

≥ 5V

5

Minimum Gate Drive Voltage

Measured with

≥ 2.7V

2.7

V

During fast discharge, due to a fast

comparator fault in normal operation

0.4

1

2.75

mA

During startup (current regulation provided

by fast comparator)

25

70

195

Gate Discharge Current

During normal discharge, due to a slow

comparator fault in normal mode, or by ON

going low

75

200

550

µA

LLMON Overvoltage Threshold

than this voltage (MAX4273)

0.1

V

GATE Overvoltage Threshold

than this voltage

0.1

0.6

V

LLMON Impedance

Impedance to GND, after a fault (MAX4273)

1

k

Ω

REFERENCE (MAX4273)

Output Voltage

1.164

1.2

1.236

V

Line Regulation

1

8

mV

Load Regulation

LOAD

0.6

3

mV

ON AND RESET COMPARATORS

Threshold Voltage

0.575

0.6

0.625

V

Hysteresis

3mV

Power-Supply Rejection Ratio

PSRR

2.7V

±1

mV/V

10mV overdrive, ON going positive or

negative, INC going negative

10

µs

Propagation Delay

INC going positive

100

150

200

ms