MAX6495ATT/VT(2012) 查看數據表（PDF） - Maxim Integrated

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MAX6495ATT/VT
(Rev.:2012)

72V, Overvoltage-Protection Switches/Limiter Controllers with an External MOSFET

Maxim Integrated 

72V, Overvoltage-Protection Switches/

Limiter Controllers with an External MOSFET

ABSOLUTE MAXIMUM RATINGS

(All pins referenced to GND.)

IN, GATE, GATEP ...................................................-0.3V to +80V

SHDN, CLEAR .............................................-0.3V to (VIN + 0.3V)

POK, OUTFB ..........................................................-0.3V to +80V

GATE to OUTFB .....................................................-0.3V to +12V

GATEP to IN ...........................................................-12V to +0.3V

OVSET, UVSET, POKSET .......................................-0.3V to +12V

Current Sink/Source (All Pins).............................................50mA

All Other Pins to GND ..................................-0.3V to (VIN + 0.3V)

Continuous Power Dissipation (TA = +70°C)

6-Pin TDFN (derate 18.2mW/°C above +70°C) .........1455mW

8-Pin TDFN (derate 18.2mW/°C above +70°C) .........1455mW

Operating Temperature Range .........................-40°C to +125°C

Junction Temperature ......................................................+150°C

Storage Temperature Range .............................-60°C to +150°C

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

Soldering Temperature (reflow) .......................................+260°C

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 = 14V, CGATE = 6nF, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)

PARAMETER

Supply Voltage Range

Input Supply Current

SYMBOL

CONDITIONS

MIN

TYP

MAX UNITS

VIN

5.5

SHDN = high

SHDN = low (MAX6497/MAX6498/

IIN

No load MAX6499)

72.0

V

100

150

15

24

µA

SHDN = low (MAX6495/MAX6496)

24

32

IN Undervoltage Lockout

IN Undervoltage Lockout

Hysteresis

OVSET Threshold Voltage

(MAX6495/MAX6496)

OVSET Threshold Hysteresis

(MAX6495/MAX6496)

OVSET Threshold Voltage

(MAX6497/MAX6498)

OVSET Threshold Voltage

(MAX6499)

UVSET Threshold Voltage

(MAX6499)

OVSET/UVSET Threshold

Hysteresis (MAX6499)

POKSET Threshold Voltage

(MAX6497/MAX6498)

POKSET Threshold

Hysteresis (MAX6497/

MAX6498)

VIN rising, enables GATE

VIN falling, disables GATE

VTH+

VTH-

OVSET rising

OVSET falling

VHYST OVSET falling

VTH+

VTH-

VTH+

VTH-

VTH+

VTH-

OVSET rising

OVSET falling

OVSET rising

OVSET falling

UVSET rising

UVSET falling

VHYST OVSET falling

VPOKSET+ POKSET rising

VPOKSET- POKSET falling

VHYST POKSET falling

4.75

5

5.25

V

155

mV

1.22

1.24

1.26

V

1.18

5

%

0.494 0.505 0.518

V

0.13

1.22

1.24

1.26

V

1.18

1.22

1.24

1.26

V

1.18

5

%

1.22

1.24

1.26

V

1.18

5

%

OVSET, UVSET, POKSET

Input Current

Startup Response Time

GATE Rise Time

ISET

tSTART

SHDN rising (Note 2)

GATE rising from GND to VOUTFB + 8V,

OUTFB = GND

-50

+50

nA

100

µs

1

ms

2

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