MAX894L Просмотр технического описания (PDF) - Maxim Integrated
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MAX894L Datasheet PDF : 8 Pages
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2A, Current-Limited, High-Side
P-Channel Switch 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 .....................................3A
Continuous Power Dissipation (TA = +70°C)
QSOP (derate 8.3mW/°C above +70°C) .......................667mW
Operating Temperature Range
MAX869LEEE.....................................................-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 = 0A
ON = IN, VIN = VOUT = 5.5V
ON = IN, VIN = 5.5V, VOUT = 0V
Rising edge, 1% hysteresis
On-Resistance
Nominal Current-Limit Set Range
Current-Limit-Amplifier Threshold
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 Current
Slow-Current-Loop Response Time
Fast-Current-Loop Response Time
VIN = 4.75V
VIN = 3.0V
RSET = 1% tolerance (Note 1)
VSET required to turn the switch off (Note 2)
IOUT = 1A, VOUT > 1.6V
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 = 0A
ISINK = 1mA, VSET = 1.4V
V FAULT = 5.5V, VSET = 1V
20% current overdrive, VCC = 5V
Turn-On Time
Turn-Off Time
VIN = 5V, IOUT = 500mA
VIN = 3V, IOUT = 500mA
VIN = 5V, IOUT = 500mA
MIN
2.7
2.0
0.40
1.178
810
2.0
2.4
2
TYP
12
0.01
0.04
2.3
38
45
1.240
955
0.01
0.05
0.05
10
4
100
200
10
MAX
5.5
20
2
30
2.6
70
90
2.4
1.302
1100
0.8
UNITS
V
µA
µA
µA
V
mΩ
A
V
A/A
V
V
±1
µA
±3
µA
0.4
V
1
µA
µs
µs
300
µs
30
µs
Note 1: Guaranteed by design. Derived from the ISET current ratio; current-limit amplifier and external set resistor accuracies.
Note 2: Tested with IOUT = 200mA and VSET raised until (VIN - VOUT) ≥ 0.8V.
Note 3: Specifications to -40°C are guaranteed by design, not production tested.
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