Datasheet

MAX6495–MAX6499
72V, Overvoltage-Protection Switches/
Limiter Controllers with an External MOSFET
2
Maxim Integrated
ABSOLUTE MAXIMUM RATINGS
(All pins referenced to GND.)
ELECTRICAL CHARACTERISTICS
(V
IN
= 14V, C
GATE
= 6nF, T
A
= -40°C to +125°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
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.
IN, GATE, GATEP ...................................................-0.3V to +80V
SHDN, CLEAR .............................................-0.3V to (V
IN
+ 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 (V
IN
+ 0.3V)
Continuous Power Dissipation (T
A
= +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
PARAMETER
SYMBOL
CONDITIONS MIN TYP MAX
UNITS
Supply Voltage Range V
IN
5.5 72.0 V
SHDN = high 100 150
SHDN = low (MAX6497/MAX6498/
MAX6499)
15 24
Input Supply Current I
IN
No load
SHDN = low (MAX6495/MAX6496)
24 32
µA
IN Undervoltage Lockout V
IN
rising, enables GATE 4.75 5 5.25 V
IN Undervoltage Lockout
Hysteresis
V
IN
falling, disables GATE 155
mV
V
TH+
OVSET rising 1.22 1.24 1.26
OVSET Threshold Voltage
(MAX6495/MAX6496)
V
TH-
OVSET falling 1.18
V
OVSET Threshold Hysteresis
(MAX6495/MAX6496)
V
HYST
OVSET falling 5 %
V
TH+
OVSET rising
0.494 0.505 0.518
OVSET Threshold Voltage
(MAX6497/MAX6498)
V
TH-
OVSET falling 0.13
V
V
TH+
OVSET rising 1.22 1.24 1.26
OVSET Threshold Voltage
(MAX6499)
V
TH-
OVSET falling 1.18
V
V
TH+
UVSET rising 1.22 1.24 1.26
UVSET Threshold Voltage
(MAX6499)
V
TH-
UVSET falling 1.18
V
OVSET/UVSET Threshold
Hysteresis (MAX6499)
V
HYST
OVSET falling 5 %
V
POKSET+
POKSET rising 1.22 1.24 1.26
POKSET Threshold Voltage
(MAX6497/MAX6498)
V
POKSET-
POKSET falling 1.18
V
POKSET Threshold
Hysteresis (MAX6497/
MAX6498)
V
HYST
POKSET falling 5 %
OVSET, UVSET, POKSET
Input Current
I
SET
-50 +50 nA
Startup Response Time
t
START
SHDN rising (Note 2) 100 µs
GATE Rise Time
GATE rising from GND to V
OUTFB
+ 8V,
OUTFB = GND
1
ms