MAX1838(2001) 查看數據表（PDF） - Maxim Integrated
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MAX1838 Datasheet PDF : 12 Pages
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Dual USB Switch with Fault Blanking
and Autoreset
ELECTRICAL CHARACTERISTICS (continued)
(VIN__ = VAUX__ = V ON = 5V, SEL = GND, ADJ_ = open, TA = -40°C to +85°C, unless otherwise noted. Circuit of Figure 1.) (Note 2)
PARAMETER
Current-Limit Threshold
Short-Circuit Current Limit
Continuous Current-Limit
Blanking Timeout Period
SYMBOL
CONDITIONS
MIN
ILIM
VIN_ – VOUT_ = 0.5V, SEL = AUX_
0.6
VAUX_ – VOUT_ = 0.5V, SEL = GND
0.6
ISHORT SEL = GND, VOUT_ = 0 (IOUT_ pulsing)
0.6
SEL = AUX_, VOUT_ = 0
0.6
From continuous current-limit condition to
FAULT_ assertion
9
MAX
1.2
1.2
1.8
1.8
UNITS
A
APEAK
40
ms
Short-Circuit Blanking Timeout
Period
From short-circuit current-limit condition to
FAULT_ assertion
7
40
ms
Turn-On Delay
ROUT_ = 10Ω, does not include rise time
(from ON asserted to VOUT_ = 10% of
0.5
VIN_), COUT_ = 1µF
4
ms
Turn-Off Delay from ON
ROUT_ = 10Ω, does not include fall time
(from ON asserted to VOUT_ = 90% of
VIN_), COUT_ = 1µF
3
ms
Logic Input High Voltage
Logic Input Low Voltage
Logic Input Current
FAULT_ Output Low Voltage
FAULT_ Output High Leakage
Current
VIN_ = 4V to 5.5V
VIN_ = 4V to 5.5V
V ON = 0 or 5.5V
VIN_ = 4V, sinking 1mA
VIN_ = V FAULT_ = 5.5V
2
V
0.8
V
-1
1
µA
0.4
V
1
µA
Autoreset Current
Autoreset Threshold
Autoreset Blanking Time
In latched-off state, VOUT_ = 0
10
In latched-off state, VOUT_ rising
0.4
In latched-off state, VOUT_ > 1 V
9
55
mA
0.6
V
40
ms
AUX_ to IN_ or IN_ to AUX_
Select Delay
Make-before-break (Note 1)
4.5
18
ms
Note 1: SEL delay includes both make and break delay. The host system should wait for at least this interval before turning off the
appropriate input supply.
Note 2: Specifications from 0°C to -40°C are guaranteed by design, not production tested.
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