3V to 12V Current-Limiting Hot Swap Controllers

with Autoretry, DualSpeed/BiLevel Fault Protection

4

_______________________________________________________________________________________

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Input Voltage Range

Input can be driven to the absolute

maximum limit without false output

inversion

-0.1

13.2

V

Input Bias Current

0.001

1

µA

ON Pulse Width Low (Note 7)

To unlatch a fault MAX4271, MAX4273 with

20

µs

DIGITAL OUTPUTS (STAT, OUTC)

Output Leakage Current

1

µA

Output Voltage Low

0.4

V

RETRY TIMING (MAX4272, MAX4273)

Retry Timeout Period

0.5

1

2

s

Default Retry

Timeout Period

(default)

176

µs

UNDERVOLTAGE LOCKOUT (UVLO)

Threshold

Startup is initiated when this threshold is

exceeded at IN

2.25

2.67

V

Hysteresis

100

mV

Delay

Time the input voltage must exceed

undervoltage lockout before startup is

initiated

100

150

200

ms

ELECTRICAL CHARACTERISTICS (continued)

Note 4: Startup period is the time during which the slow comparator is ignored and the fast comparator regulates the sense current.

It is measured from the time ON is brought high.

Note 7: Guaranteed by design.