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MAX4271

3V to 12V Current-Limiting Hot Swap Controllers with Autoretry / DualSpeed/BiLevel Fault Protection

Maxim Integrated 

3V to 12V Current-Limiting Hot-Swap Controllers

with Autoretry, DualSpeed/BiLevel Fault Protection

ELECTRICAL CHARACTERISTICS (continued)

(VIN = +2.7V to +13.2V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VIN = +5V and TA = +25°C.) (Note 3)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX UNITS

Input Voltage Range

Input can be driven to the absolute

maximum limit without false output

-0.1

inversion

13.2

V

Input Bias Current

IB,COMP

0.001

1

μA

ON Pulse Width Low (Note 7)

tRESTART

To unlatch a fault MAX4271, MAX4273 with

CTIM = IN

20

μs

DIGITAL OUTPUTS (STAT, OUTC)

Output Leakage Current

Output Voltage Low

VOL

RETRY TIMING (MAX4272, MAX4273)

VSTAT ≤ 13.2, VOUTC ≤ 13.2

ISINK = 1mA

1

μA

0.4

V

Retry Timeout Period

tRETRY 100nF capacitor on CTIM (Note 5)

0.5

1

2

s

Default Retry

Timeout Period

tRETRY

(default)

CTIM = no connection

176

µs

UNDERVOLTAGE LOCKOUT (UVLO)

Threshold

VUVLO

Startup is initiated when this threshold is

exceeded at IN

2.25

2.67

V

Hysteresis

VUVLO,HYST

100

mV

Delay

tD,UVLO

Time the input voltage must exceed

undervoltage lockout before startup is

initiated

100

150

200

ms

Note 3: All devices are 100% tested at TA = +25°C. All temperature limits are guaranteed by design.

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 5: Inferred from test with CTON = 10nF (MAX4273) and CTIM = 1nF.

Note 6: The current available at GATE is a function of VGATE (see Typical Operating Characteristics).

Note 7: Guaranteed by design.

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