MAX891L データシートの表示（PDF） - Maxim Integrated
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MAX891L Datasheet PDF : 8 Pages
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Current-Limited, High-Side
P-Channel Switches with Thermal Shutdown
ABSOLUTE MAXIMUM RATINGS
IN to GND ..................................................................-0.3V to 6V
ON, FAULT to GND.................................................... -0.3V to 6V
SET, OUT to GND ........................................-0.3V to (VIN + 0.3V)
Maximum Continuous Switch Current
MAX891L ..........................................................................0.75A
MAX892L ........................................................................0.375A
Continuous Power Dissipation (TA = +70°C)
µMAX (derate 4.1mW/°C above +70°C) .......................330mW
Operating Temperature Range
MAX891LEUA/MAX892LEUA ............................-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
(VIN = 3V, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
CONDITIONS
Operating Voltage
Quiescent Current
Off-Supply Current
Off-Switch Current
Undervoltage Lockout
VIN = 5V, ON = GND, IOUT = 0mA
ON = IN, VIN = VOUT = 5.5V
ON = IN, VIN = 5.5V, VOUT = 0V
Rising edge, 1% hysteresis
On-Resistance
VIN = 4.5V
VIN = 3.0V
MAX891L
MAX892L
MAX891L
MAX892L
Current-Limit-Amplifier Accuracy
Maximum Output Current
VSET required to turn the switch off (Note 1)
MAX891L
MAX892L
IOUT to ISET Current Ratio
ON Input Low Voltage
ON Input High Voltage
ON Input Leakage
ISET Bias Current
FAULT Logic Output Low Voltage
FAULT Logic Output High Leakage
Slow-Current-Loop Response Time
Fast-Current-Loop Response Time
VOUT = 1.6V to 2.8V
MAX891L, IOUT = 250mA
MAX892L, IOUT = 125mA
VIN = 2.7V to 5.5V
VIN = 2.7V to 3.6V
VIN = 4.5V to 5.5V
V ON = 5.5V
VSET = 1.24V, IOUT = 0mA
ISINK = 1mA, VSET = 1.4V
V FAULT = 5.5V, VSET = 1V
20% current overdrive, VIN = 5V
Turn-On Time
Turn-Off Time
IOUT = 250mA (MAX891L), or 125mA
(MAX892L)
VIN = 5V
VIN = 5V
VIN = 3V
MIN
2.7
2.0
1.178
840
840
2.0
2.4
-1
0.8
TYP
13
0.02
0.02
2.3
120
250
150
300
1.240
500
250
965
965
0.01
0.5
0.05
5
2
100
150
2
MAX
5.5
20
1
3
2.6
225
420
300
500
1.302
1130
1130
0.8
1
3
0.4
1
200
20
UNITS
V
µA
µA
µA
V
mΩ
mΩ
V
mA
A/A
V
V
µA
µA
V
µA
µs
µs
µs
µs
2 _______________________________________________________________________________________
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