MAX1922 Просмотр технического описания (PDF) - Maxim Integrated
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MAX1922 Datasheet PDF : 9 Pages
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1A Current-Limited Switch for 2 USB Ports
ABSOLUTE MAXIMUM RATINGS
IN, EN, OC to GND...................................................-0.3V to +6V
OUT to GND ................................................-0.3V to (VIN + 0.3V)
Maximum Switch Current.........................2.3A (internally limited)
OUT Short-Circuit to GND ..........................................Continuous
Continuous Power Dissipation (TA = +70°C)
8-Pin SO (derate 5.88mW/°C above +70°C)................471mW
10-Pin TDFN (derate 18.5mW/°C above +70°C) .......1481mW
Operating Temperature Range (extended) .........-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+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 = 5V, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
OPERATING CONDITION
Input Voltage
VIN
POWER SWITCH
Switch Static Drain-Source On-
State Resistance
Switch Turn-On Time
Switch Turn-Off Time
ENABLE INPUT (EN)
EN High-Level Input Voltage
EN Low-Level Input Voltage
EN Input Current
Startup Time
CURRENT LIMIT
Overload Output Current
Short-Circuit Output Current
SUPPLY CURRENT
Supply Current, Low-Level Input
Supply Current, High-Level
Input
Supply-Leakage Current
UNDERVOLTAGE LOCKOUT
RDS(ON)
tON
tOFF
VIH
VIL
ILIMIT
ISC
IQ
TA = +25°C
TA = 0°C to +85°C
ILOAD = 400mA
ILOAD = 400mA
VIN = 4.4V to 5.5V
VIN = 4.4V to 5.5V
VIN = 3V
VIN = 2.7V to 3.6V
VIN = 3.7V to 5.5V
VIN = 2.7V to 5.5V
VEN = VIN or GND
VIN = 5V, COUT = 150µF from EN driven low
to 50% full VOUT
Force VOUT to 4.5V
OUT shorted to GND
VEN = VIN = VOUT = 5.5V
VEN = 0, IOUT = 0
Timer not running
Timer running
VEN = VIN = 5.5V,
VOUT = 0
TA = +25°C
TA = 0°C to +85°C
Undervoltage Lockout
OVERCURRENT (OC)
OC Threshold
OC Output Low Voltage
UVLO Rising edge, 100mV hysteresis
VOL
ISINK = 1mA, VIN = 3V
MIN TYP MAX UNITS
2.7
5.5
V
70
100
125
mΩ
72
150
80
200
µs
3
6
20
µs
2.0
V
2.4
0.8
V
-1
1
µA
1
ms
1.4
1.75
2.1
A
1
1.4
A
0.002
1
µA
16
25
µA
35
0.01
2
µA
15
2.0
2.4
2.6
V
1.1
A
0.4
V
2 _______________________________________________________________________________________
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