MAX1940(2002) View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX1940 Datasheet PDF : 12 Pages
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Triple USB Switch with Autoreset and
Fault Blanking
ELECTRICAL CHARACTERISTICS (continued)
(VIN_ = 5V, CIN_ = 0.1µF, COUT_ = 1µF, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
FAULT_ Output Low Voltage
VOL
ISINK = 1mA, VIN_ = 4V
0.4
FAULT_ Output High Leakage
Current
VIN_ = VFAULT_ = 5.5V
1
OUT_ Autoreset Current
OUT_ Autoreset Threshold
In latched off state, VOUT_ = 0
In latched off state, OUT_ rising
10
25
45
0.4
0.5
0.6
OUT_ Autoreset Blanking Time
In latched off state, VOUT_ > 0.5V
10
20
35
UNITS
V
µA
mA
V
ms
ELECTRICAL CHARACTERISTICS
(VIN_ = 5V, CIN_ = 0.1µF, COUT_ = 1µF, TA = -40°C to +85°C, unless otherwise noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
Supply Voltage Range
VIN_
4.0
Switch On-Resistance
Standby Supply Current
RON
Each switch
All switches disabled
Quiescent Supply Current
One switch enabled, IOUT_ = 0
IIN_
Two switches enabled, IOUT_ = 0
All switches enabled, IOUT_ = 0
OUT_ Off-Leakage Current
ILKG All switches disabled, VOUT_ = 0
Undervoltage Lockout Threshold
VULVO Rising edge, 3% hysteresis
3.0
Continuous Load Current
500
Continuous Current Limit
ILIM
VIN_ - VOUT_ = 0.5V
0.7
Short-Circuit Current Limit
ISC
VOUT_ = 0 (IOUT_ pulsing)
0.9
Continuous Current-Limit
Blanking Timeout Period
From continuous current-limit condition to
FAULT_ asserted
10
Short-Circuit Blanking Timeout
Period
From short-circuit current-limit condition to
FAULT_ asserted
7.5
Turn-On Delay
tON
ROUT_ = 10Ω, does not include rise time
(from ON_ to 10% of VOUT_)
0.5
Turn-Off Delay
tOFF
ROUT_ = 10Ω, does not include fall time
(from ON_ to 90% of VOUT_)
ON_, SEL Input High Level
VIH
VIN_ = 4V to 5.5V
2
ON_, SEL Input Low Level
VIL
VIN_ = 4V to 5.5V
ON_, SEL Input Leakage Current
VON_ = 0 or VIN_
-1
FAULT_ Output Low Voltage
VOL
ISINK = 1mA, VIN_ = 4V
FAULT_ Output High Leakage
Current
VIN_ = V FAULT_ = 5.5V
OUT_ Autoreset Current
OUT_ Autoreset Threshold
OUT_ Autoreset Blanking Time
In latched off state, VOUT_ = 0
10
In latched off state, OUT_ rising
0.4
In latched off state, VOUT_ > 0.5V
10
MAX
5.5
135
10
75
90
100
10
3.8
1.2
1.6
35
UNITS
V
mΩ
µA
µA
µA
V
mA
A
APK
ms
35.0
ms
4.0
ms
3
ms
V
0.8
V
+1
µA
0.4
V
1
µA
50
mA
0.6
V
35
ms
Note 1: Short-circuit detect threshold is the output voltage at which the device transitions from short-circuit current limit to
continuous current limit.
Note 2: Specifications to -40°C are guaranteed by design, not production tested.
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