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MAX4995B Datasheet(PDF) 2 Page - Maxim Integrated Products

Part # MAX4995B
Description  50mA to 600mA Programmable Current-Limit Switches
Download  12 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX4995B Datasheet(HTML) 2 Page - Maxim Integrated Products

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50mA to 600mA Programmable
Current-Limit Switches
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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,
ON, FLAG, OUT, and SETI to GND .............-0.3V to +6V
Current into Any Pin (Except IN, OUT)................................20mA
OUT Short Circuit to GND .................................................800mA
Continuous Power Dissipation (TA = +70°C) (Note 1)
10-Pin UTQFN (derate 6.99mW/ °C above
TA = +70°C) ................................................................559mW
Junction-to-Ambient Thermal Resistance (
θJA)
(Note 2) ...................................................................143.1°C/W
Operating Temperature Range .........................-40°C to +125°C
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature ......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
Note 1: These power limits are defined by the thermal characteristics of the package, maximum function temperature (+150°C), and
the JEDEC51-7 defined setup. Maximum power dissipation could be lower, limited by the thermal-shutdown protection
included in this IC.
Note 2: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-
layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.
ELECTRICAL CHARACTERISTICS
(VIN = +1.7V to +5.5V, RSETI = 94.3kΩ, CIN = 1µF, and TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at VIN = +3.3V,
TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
SUPPLY OPERATION
Operating Voltage
VIN
1.7
5.5
V
Quiescent Current
IQ
IOUT = 0, switch on, VIN = 3.3V
170
300
µA
Latchoff Current
ILATCH
VIN = 3.3V, IOUT = 0 after an overcurrent
fault (MAX4995B)
815
µA
Shutdown Forward Current
ISHDN
VON = 0, VON = VIN, VIN = 5.5V, VOUT = 0
0.01
5µA
Shutdown Reverse Current
IRSHDN
VON = 0, VON = VIN, VIN = 1.7V,
VOUT = 5.5V (current into OUT)
0.01
1µA
INTERNAL FET
Switch-On Resistance
RON
VIN = 3.3V, IOUT lower than ILIM
130
350
m
Ω
Normalized Current-Limit Accuracy
ILIM = 50mA to 600mA, VIN - VOUT = 1V,
VIN = 3.3V (Note 3)
0.9
1
1.1
(RSETI + 2.48) x ILIM Product
ILIM = 50mA to 600mA, VIN - VOUT = 1V,
VIN = 3.3V
26138
29042
31946
V
Reverse Blocking Current
VOUT > VIN + 300mV after reverse-current-
limit shutdown
10
µA
Reverse Blocking Threshold
VOUT = VIN + 300mV, OUT falling until switch
turns on
35
110
210
mV
FLAG Assertion Drop Voltage
Threshold
VFA
Increase (VIN - VOUT) drop until FLAG
asserts, IOUT limiting, VIN = 3.3V
650
mV
ON,
ON INPUT
ON, ON Input Leakage
ILEAK
VON, VON = VIN or GND
-1
+1
µA
ON, ON Input Logic-High Voltage
VIH
1.6
V
ON, ON Input Logic-Low Voltage
VIL
0.4
V
FLAG OUTPUT
FLAG Output Logic-Low Voltage
ISINK = 1mA
0.4
V
FLAG Output Leakage Current
VIN = VFLAG = 5.5V, FLAG deasserted
1
µA


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