Datasheet

MAX4785–MAX4788
50mA/100mA Current-Limit Switches
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
IN
= 2.3V to 5.5V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at V
IN
= 3.3V, 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, ON, FLAG, OUT to GND .....................................-0.3V to +6V
OUT Short Circuit to GND .................................Internally Limited
Continuous Power Dissipation (T
A
= +70°C)
4-Pin SC70 (derate 3.1mW/°C above +70°C)..............245mW
5-Pin SC70 (derate 3.1mW/°C above +70°C)..............247mW
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
Operating Voltage V
IN
2.3 5.5 V
V
IN
= 2.3V to 5.0V 65 100
Quiescent Current I
Q
V
ON
= V
IN
, I
OUT
= 0,
switch on
V
IN
= 5.0V to 5.5V 120
µA
Latch-Off Current (Note 2) I
LATCH
V
ON
= V
IN
, after an overcurrent fault
(MAX4785/MAX4787)
815µA
Shutdown Current I
SHDN
V
ON
= 0V
0.01
1µA
MAX4785/MAX4786 50 120
Forward Current Limit I
FWD
MAX4787/MAX4788
100
240
mA
MAX4785/MAX4786 120
Reverse Current Limit I
REV
MAX4787/MAX4788 240
mA
ON Input Leakage V
ON
= V
IN
or GND -1 +1 µA
Off Switch Leakage V
ON
= 0V, V
OUT
= 0V
0.01
1µA
Undervoltage Lockout UVLO Rising edge 1.8 2.2 V
Undervoltage Lockout Hysteresis
100
mV
T
A
= +25°C, I
OUT
= 20mA 0.7 1
On-Resistance R
ON
T
A
= -40°C to +85°C, I
OUT
= 20mA 1.3
Ω
ON Input Logic High Voltage V
IH
2.0 V
ON Input Logic Low Voltage V
IL
0.8 V
FLAG Output Logic Low Voltage
I
SINK
= 1mA (MAX4785/MAX4787) 0.4 V
FLAG Output High Leakage
Current
V
IN
= V
F LAG
= 5.5V (MAX4785/MAX4787) 1 µA
Thermal Shutdown
150
°C
Thermal-Shutdown Hysteresis 15 °C
DYNAMIC
Turn-On Time (Note 3)
ON from low to high; I
OUT
= 10mA,
C
L
= 0.1µF
50 µs
Turn-Off Time (Note 3)
ON from high to low; I
OUT
= 10mA,
C
L
= 0.1µF
30 ns