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Dual, Current-Limited, High-Side P-Channel
Switches with Thermal Shutdown
ABSOLUTE MAXIMUM RATINGS
IN to GND ...................................................................-0.3V to 6V
ONA , ONB to GND .....................................................-0.3V to 6V
SET A, SET B, OUT A, OUT B to GND ........-0.3V to (V IN + 0.3V)
Maximum Continuous Switch Current
MAX894L ..........................................................................0.75A
MAX895L ........................................................................0.375A
Continuous Power Dissipation (T A = +70°C)
SO (derate 5.88mW/°C above +70°C) .......................471mW
Operating Temperature Range
MAX89_LESA .................................................-40°C to +85°C
Storage Temperature Range ...............................-65°C to+150°C
Lead Temperature (soldering, 10sec) ..............................+300°C
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.
ELECTRICAL CHARACTERISTICS
(V IN = 3V, T A = 0°C to +85°C, unless otherwise noted. Typical values are at T A = +25°C.)
PARAMETER
Operating Voltage
Quiescent Current
Off-Supply Current
Off-Switch Current
CONDITION
V IN = 5V, ONA = ONB = GND, I OUT A = I OUT B = 0
ONA = ONB = IN, V IN = V OUT A = V OUT B = 5.5V
ONA = ONB = IN, V IN = 5.5V, V OUT A = V OUT B = 0
MIN
2.7
TYP
18
0.0001
0.002
MAX
5.5
30
1
10
UNITS
V
μA
μA
μA
Undervoltage Lockout
On-Resistance
Rising edge, 1% hysteresis
V IN = 4.5V
V IN = 3.0V
MAX894L
MAX895L
MAX894L
MAX895L
2.0
2.4
120
250
150
300
2.6
225
420
300
500
V
m ?
Current-Limit-Amplifier Threshold
Maximum Output Current
V SET required to turn the switch off (Note 1)
MAX894L
MAX895L
1.178
1.240
500
250
1.302
V
mA
I OUT to I SET Current Ratio
V OUT > 1.6V
MAX894L, I OUT = 250mA
MAX895L, I OUT = 125mA
945
910
1085
1050
1270
1235
A/A
ONA, ONB Input Low Voltage
ONA, ONB Input High Voltage
V IN = 2.7V to 5.5V
V IN = 2.7V to 3.6V
V IN = 4.5V to 5.5V
2.0
2.4
0.8
V
V
ONA, ONB Input Leakage
I SETA, I SETB Bias Current
Slow-Current-Loop Response Time
Fast-Current-Loop Response Time
Turn-On Time
Turn-Off Time
V ONA = V ONB = 5.5V
V SET A = 1.4V, ONA = 0, ONB = V IN , I OUT A = 0,
V IN = V OUT
V SET B = 1.4V, ONB = 0, ONA = V IN , I OUT B = 0,
V IN = V OUT
20% current overdrive, V CC = 5V
V IN = 5V, I OUT = 250mA (MAX894L), 125mA (MAX895L)
V IN = 3V, I OUT = 250mA (MAX894L), 125mA (MAX895L)
0.8
0.01
0.5
0.5
5
2
100
150
1.2
1
3
3
200
20
μA
μA
μs
μs
μs
μs
Note 1: Tested with I OUT = 50mA for the MAX894L and 25mA for the MAX895L, and V SET raised until V IN - V OUT ≥ 0.8V.
2
_______________________________________________________________________________________
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