MAX4370ESA datasheet(2/16 Pages) MAXIM

2 / 16 page

Current-Regulating Hot-Swap Controller with

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 2)

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: ON can be pulled below ground. Limiting the current to 2mA ensures that this pin is never lower than about -0.8V.

VIN to GND...........................................................................+15V

STAT to GND ..........................................................-0.3V to +14V

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

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

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

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

Current into ON...................................................................±2mA

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

Continuous Power Dissipation (TA = +70°C)

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

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

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

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

Start-up is initiated only if VGATE is less than this

voltage

ON = VIN

IGATE = 8.5µA, measured above VIN

Measured with respect to VIN; voltage at which

internal clamp circuitry is triggered

During start-up (current regulation provided by

fast comparator)

Time from current overload to VGATE < 0.1V,

CGATE = 1000pF to GND (triggered by the fast

comparator during normal operation)

VSEN = VIN

VGATE = VIN (Note 4)

CTIM = floating

10mV overdrive, from overload condition to GATE

discharging

VIN - VSEN

CSPD = floating

100nF on CTIM

100nF on CSPD to GND

CONDITIONS

0.1

Gate Overvoltage Threshold

2.7

Minimum Gate Drive Voltage

6.7

7.5

Maximum Gate Voltage

Gate Discharge Current

µs

tOFF

Turn-Off Time

µA

100

IGATE

Gate Charge Current

µs

5.5

tSTART

Start-Up Period

(Note 3)

0.6

Supply Current

2.7

13.2

VIN

Input Voltage Range

µA

0.2

IB,VSEN

VSEN Input Bias Current

460

tFCD

Fast Comparator Response

Time

180

200

220

VFC,TH

Fast Comparator Threshold

VSC,TH

Slow Comparator

Threshold

µs

tCSPD

Slow Comparator Response

Time

UNITS

MIN

TYP

MAX

SYMBOL

PARAMETER

During turn-off, triggered by a fault in normal

operation or ON falling edge

µA

225

550

IGATE,DIS

POWER SUPPLIES

MOSFET DRIVER

CURRENT CONTROL

VIN ≥ 5V

VIN ≥ 2.7V

TA = +25°C

TA = TMIN to TMAX

43.5

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