MAX1838(2001) 데이터 시트보기 (PDF) - Maxim Integrated
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MAX1838 Datasheet PDF : 12 Pages
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Dual USB Switch with Fault Blanking
and Autoreset
ABSOLUTE MAXIMUM RATINGS
IN_, AUX_, ON, OUT_, SEL, FAULT_,
ADJ_ to GND .........................................................-0.3V to +6V
IN_, AUX_ to OUTA_; IN_, AUX_ to OUTB_.................-6V to +6V
AUX_ to IN_ .................................................................-6V to +6V
Maximum Continuous Switch Current
(per channel, internally limited).............................................1.2A
FAULT_ Current ..................................................................20mA
Continuous Power Dissipation (TA = +70°C)
16-Pin QSOP (derate 8.3mW/°C above +70°C)..........667mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°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__ = VAUX__ = 5V, ON = SEL = GND, ADJ_ = open, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA =
+25°C.)
PARAMETER
Supply Voltage Range
Switch On-Resistance
AUX_ Standby Supply Current
IN_ Standby Supply Current
AUX_ Quiescent Supply Current
IN_ Quiescent Supply Current
OUT_ Off-Leakage Current
Reverse Leakage Current
Undervoltage Lockout Threshold
Continuous Load Current
Current-Limit Threshold
Short-Circuit Current Limit
SYMBOL
VIN_
VAUX_
RON
VUVLO
CONDITIONS
VIN_ = 5V, each switch
VIN_ = 4V, each switch
V ON = VAUX_
V ON = VIN_
V ON = 0, IOUT_ = 0
V ON = 0, IOUT_ = 0, SEL = AUX_
V ON = VIN_, VOUTA_ = VOUTB_ = 0
V OUT = 5.5V, VIN_ = VAUX_ = 0
VIN_ or VAUX_ rising edge, 3% hysteresis
ILIM
ISHORT
VIN_ - VOUT_ = 0.5V, SEL = AUX_
VAUX_ - VOUT_ = 0.5V, SEL = GND
RADJ_ = 67kΩ
SEL = GND,
VOUT_ = 0
(IOUT_ pulsing)
RADJ_ = 67kΩ
SEL = AUX_, VOUT_ = 0
Continuous Current-Limit
Blanking Timeout Period
Short-Circuit Blanking Timeout
Period
From continuous current-limit condition to
FAULT_ assertion
From short-circuit current-limit condition to
FAULT_ assertion
MIN TYP MAX UNITS
4.0
5.5
V
4.0
5.5
95
170
mΩ
100
7
16
µA
1
3
µA
66
350
µA
23
300
µA
0.02
10
µA
0.02
10
µA
3.0
3.5
3.8
V
500
mA
0.6
0.9
1.2
0.6
0.9
1.2
A
0.09 0.225 0.36
0.3
0.48 APEAK
0.09
ARMS
0.6
1.2
1.8
APEAK
0.35
ARMS
10
20
35
ms
7.5
18
35
ms
2 _______________________________________________________________________________________
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