72V, Overvoltage-Protection Switches/Limiter
Controllers with an External MOSFET
MAX6495鈥揗AX6499
ABSOLUTE MAXIMUM RATINGS
(All pins referenced to GND.)
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掳C)
6-Pin TDFN (derate 18.2mW/掳C above +70掳C) .........1455mW
8-Pin TDFN (derate 18.2mW/掳C above +70掳C) .........1455mW
Operating Temperature Range .........................-40掳C to +125掳C
Junction Temperature ......................................................+150掳C
Storage Temperature Range .............................-60掳C to +150掳C
Lead Temperature (soldering, 10s) .................................+300掳C
Stresses beyond those listed under 鈥淎bsolute Maximum Ratings鈥?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
(V
IN
= 14V, C
GATE
= 6nF, T
A
= -40掳C to +125掳C, unless otherwise noted. Typical values are at T
A
= +25掳C.) (Note 1)
PARAMETER
Supply Voltage Range
SYMBOL
V
IN
SHDN
= high
SHDN
= low (MAX6497/MAX6498/
MAX6499)
SHDN
= low (MAX6495/MAX6496)
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)
OVSET, UVSET, POKSET
Input Current
Startup Response Time
GATE Rise Time
V
TH+
V
TH-
V
HYST
V
TH+
V
TH-
V
TH+
V
TH-
V
TH+
V
TH-
V
HYST
V
IN
rising, enables GATE
V
IN
falling, disables GATE
OVSET rising
OVSET falling
OVSET falling
OVSET rising
OVSET falling
OVSET rising
OVSET falling
UVSET rising
UVSET falling
OVSET falling
1.22
1.22
1.22
0.494
1.22
4.75
CONDITIONS
MIN
5.5
100
15
24
5
155
1.24
1.18
5
0.505
0.13
1.24
1.18
1.24
1.18
5
1.24
1.18
5
1.26
1.26
1.26
0.518
1.26
TYP
MAX
72.0
150
24
32
5.25
V
mV
V
%
V
V
V
%
V
碌A
UNITS
V
Input Supply Current
I
IN
No load
V
POKSET+
POKSET rising
V
POKSET-
POKSET falling
V
HYST
POKSET falling
%
I
SET
t
START
SHDN
rising (Note 2)
GATE rising from GND to V
OUTFB
+ 8V,
OUTFB = GND
-50
100
1
+50
nA
碌s
ms
2
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