Datasheet

MAX4789–MAX4794
200mA/250mA/300mA 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 SOT143 (derate 4.0mW/°C above +70°C)..........320mW
5-Pin SOT23 (derate 7.1mW/°C above +70°C)............571mW
6-Pin TDFN (derate 24.4mW/°C above +70°C).........1951.2mW
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
80 120
Quiescent Current I
Q
V
ON
= V
IN
, I
OUT
= 0,
switch on
V
IN
= +5.0V to +5.5V
160
µA
Latch-Off Current (Note 2) I
LATCH
V
ON
= V
IN
, after an overcurrent fault
(MAX4789/MAX4791/MAX4793)
815µA
Shutdown Current I
SHDN
V
ON
= 0V
0.01
1µA
MAX4789/MAX4790
200
300
MAX4791/MAX4792
250
375Forward Current Limit
MAX4793/MAX4794
300
450
mA
MAX4789/MAX4790 300
MAX4791/MAX4792 375
Reverse Current Limit
MAX4793/MAX4794 450
mA
Shutdown Reverse Leakage V
ON
= 0, V
IN
= 3V, V
OUT
= 5V
100
µA
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
= 100mA 0.2 0.4
On-Resistance R
ON
T
A
= - 40° C to + 85°C , I
OU T
= 100m A 0.5
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
S IN K
= 1m A ( M AX 4789/M AX 4791/M AX 4793)
0.4 V
FLAG Output High Leakage
Current
V
IN
= V
FLAG
= 5.5V
(MAX4789/MAX4791/MAX4793)
1µA
Thermal Shutdown
150
°C
Thermal-Shutdown Hysteresis 15 °C
DYNAMIC
Turn-On Time (Note 3)
V
ON
from low to high; I
OUT
= 10mA,
C
L
= 0.1µF
100
µs
Turn-Off Time (Note 3)
V
ON
from high to low; I
OUT
= 10mA,
C
L
= 0.1µF
40 ns