MAX4272ESA datasheet(2/24 Pages) MAXIM

2 / 24 page

3V to 12V Current-Limiting Hot Swap Controllers

with Autoretry, DualSpeed/BiLevel Fault Protection

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(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)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

Note 1: GATE can be pulled below LLMON, but current must be limited to 2mA.

Note 2: INC and ON can be pulled below ground. Limiting the current to 2mA ensures that these pins are never lower than about -0.8V.

IN to GND ............................................................................+15V

STAT, OUTC, LLMON, AUXVCC to GND ...............-0.3V to +14V

GATE to GND ..............................................-0.3V to (VIN + 8.5V)

GATE to LLMON (Note 1).........................................-1V to +8.5V

INC, ON to GND (Note 2) .........................................-1V to +14V

CEXT to GND ...............................................-8.5V to (VIN + 0.3V)

CSPD, CTON,

REF to GND ...........-0.3V to the lower of (VIN + 0.3V) or +12V

VSENSE, RTH, CTIM to GND.......................-0.3V to (VIN + 0.3V)

Current into INC, ON (Note 2) ............................................±2mA

Current into Any Other Pin ...............................................±50mA

Continuous Power Dissipation (TA = +70°C)

8-Pin SO (derate 5.9mW/°C above +70°C)..................471mW

16-Pin QSOP (derate 8.3mW/°C above +70°C)...........667mW

16-Pin SO (derate 8.7mW/°C above +70°C)................696mW

Operating Temperature Range ...........................-40°C to +85°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

POWER SUPPLIES

Input Voltage Range

VIN

2.7

13.2

Supply Current

VON = VIN

0.6

CURRENT CONTROL

TA = +25

°C

455055

Slow Comparator Threshold

VSC,TH

VIN - VSENSE

TA = TMIN to TMAX

43.5

CSPD = floating

µs

Slow Comparator Response

Time

tCSPD

CSPD = 100nF to GND

TA = +25

°C

455055

Ω on

RTH to

VIN

TA = TMIN to TMAX

43.5

TA = +25

°C

675

750

825

75k

Ω

on RTH

to VIN

TA = TMIN to TMAX

650

840

MAX4273

only

RTH = GND

Fast Comparator Threshold

VFC,TH

MAX4271/MAX4272

180

200

220

Fast Comparator Response

Time

tFCD

10mV overdrive, from overload condition to

gate discharging

350

SENSE Input Bias Current

IB,SENSE

VSENSE = VIN

0.2

µA

MOSFET DRIVER

MAX4271/MAX4272 CTIM = 100nF

MAX4273 CTON = 100nF

Startup Period

(Notes 4, 5)

tSTART

No capacitor

5.5

µs

Gate Charge Current

IGATE

GATE = IN (Note 6)

100

µA

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