
MAX4838A/MAX4840A/MAX4842A
Overvoltage-Protection Controllers with
Status
FLAG
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VIN = +5V (MAX4838A/MAX4840A), VIN = +4V (MAX4842A), TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA
= +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 to GND ..............................................................-0.3V to +30V
GATE to GND ........................................................-0.3V to +12V
EN, FLAG to GND ....................................................-0.3V to +6V
Continuous Power Dissipation (TA = +70°C)
6-Pin SC70 (derate 3.1mW/°C above +70°C) .............245mW
6-Pin DFN (derate 2.1mW/°C above +70°C) ............477mW
Operating Temperature Range ..........................-40°C to +85°C
Junction Temperature .................................................... +150°C
Storage Temperature Range ............................-65°C to +150°C
Lead Temperature (soldering, 10s) ................................+300°C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Input Voltage Range
VIN
1.2
28.0
V
MAX4838A/MAX4840A
3.0
3.25
3.5
Undervoltage-Lockout Threshold
UVLO
VIN falling
MAX4842A
2.3
2.5
2.7
V
Undervoltage-Lockout Hysteresis
50
mV
VIN rising
MAX4838A
7.0
7.4
7.8
VIN rising
MAX4840A
5.5
5.8
6.1
Overvoltage Trip Level
OVLO
VIN rising
MAX4842A
4.4
4.7
5.0
V
MAX4838A
100
MAX4840A
80
Overvoltage Trip Level Hysteresis
MAX4842A
50
mV
No load, EN = GND or 5V,
VIN = 5V (MAX4838A/MAX4840A)
80
200
IN Supply Current
IIN
No load, EN = GND or 4.0V,
VIN = 4V (MAX4842A)
75
160
A
VIN = 2.9V (MAX4838A/MAX4840A)
30
UVLO Supply Current
IUVLO
VIN = 2.2V (MAX4842A)
22
A
MAX4838A/MAX4840A
910
GATE Voltage
VGATE
IGATE sourcing 1A
MAX4842A
7.5
8.0
V
GATE Pulldown Current
IPD
VIN > VOVLO, VGATE = 5.5V
27
mA
1.2V
≤ VIN < UVLO,
ISINK = 50A
0.4
FLAG Output Low Voltage
VOL
FLAG asserted
VIN
≥ OVLO, ISINK =
1mA
0.4
V
FLAG Output High Leakage
IOH
VFLAG = 5.5V, FLAG deasserted
1
A
EN Input High Voltage
VIH
1.5
V
EN Input Low Voltage
VIL
0.4
V
EN Input Leakage
ILKG
EN = GND or 5.5V
1
A