MAX4370 데이터 시트보기 (PDF) - Maxim Integrated

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MAX4370

Current-Regulating Hot-Swap Controller with DualSpeed/BiLevel Fault Protection

Maxim Integrated 

Current-Regulating Hot-Swap Controller with

DualSpeed/BiLevel Fault Protection

ABSOLUTE MAXIMUM RATINGS

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

Note 1: ON can be pulled below ground. Limiting the current to 2mA ensures that this pin is never lower than about -0.8V.

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.

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)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX UNITS

POWER SUPPLIES

Input Voltage Range

VIN

2.7

13.2

V

Supply Current

IQ

ON = VIN

0.6

1

mA

CURRENT CONTROL

Slow Comparator

Threshold

Slow Comparator Response

Time

VSC,TH

tCSPD

VIN - VSEN

CSPD = floating

TA = +25°C

TA = TMIN to TMAX

100nF on CSPD to GND

45

50

43.5

10

20

10

20

55

mV

56

40

µs

40

ms

Fast Comparator Threshold VFC,TH VIN - VSEN

180

200

220

mV

Fast Comparator Response

Time

tFCD

10mV overdrive, from overload condition to GATE

discharging

460

ns

VSEN Input Bias Current

MOSFET DRIVER

Start-Up Period

(Note 3)

Gate Charge Current

Turn-Off Time

IB,VSEN VSEN = VIN

tSTART

IGATE

tOFF

100nF on CTIM

CTIM = floating

VGATE = VIN (Note 4)

Time from current overload to VGATE < 0.1V,

CGATE = 1000pF to GND (triggered by the fast

comparator during normal operation)

0.2

10

µA

21

31

41

ms

5.5

µs

100

µA

60

µs

Gate Discharge Current

IGATE,DIS

During start-up (current regulation provided by

fast comparator)

During turn-off, triggered by a fault in normal

operation or ON falling edge

80

µA

75

225

550

Maximum Gate Voltage

Measured with respect to VIN; voltage at which

internal clamp circuitry is triggered

6.7

7.5

V

Minimum Gate Drive Voltage

IGATE = 8.5µA, measured above VIN

VIN ≥ 5V

VIN ≥ 2.7V

5

2.7

V

Gate Overvoltage Threshold

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

voltage

0.1

V

2 _______________________________________________________________________________________

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