Datasheet

MAX1946
Single USB Switch with Autoreset and
Fault Blanking in Tiny TDFN
4 _______________________________________________________________________________________
Note 1: All parts are 100% tested at T
A
= +25°C. Limits over the operating temperature range are guaranteed by design.
Note 2: Short-circuit detect threshold is the output voltage at which the device transitions from short-circuit current limit to continuous
current limit.
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= 5V, C
IN
= 0.1µF, C
OUT
= 1µF, T
A
= -40°C to +85°C, unless otherwise noted.) (Note1)
PARAMETER
SYM B O L
CONDITIONS
MIN TYP MAX
UNITS
Turn-Off Delay t
OFF
R
OUT
= 10Ω, time from ON to 90% of V
OUT
,
does not include fall time
2ms
V
IN
= 2.7V to 4V 1.6 V
ON, SEL Input High Level V
IH
V
IN
= 4V to 5.5V 2 V
V
IN
= 2.7V to 4V 0.6 V
ON, SEL Input Low Level V
IL
V
IN
= 4V to 5.5V 0.8 V
ON, SEL Input Leakage Current V
ON
, V
SEL
= 0 or V
IN
-1 +1 µA
FAULT Output Low Voltage V
OL
I
SINK
= 1mA, V
IN
= 2.7V 0.5 V
OUT Output Current Autoreset
Mode
In latched off state, V
OUT
= 0 10 45 mA
OUT Autoreset Threshold In latched off state, V
OUT
rising 0.4 0.6 V
OUT Autoreset Blanking Time In latched off state, V
OUT
> 0.5V 10 35 ms
QUIESCENT SUPPLY CURRENT
vs. INPUT VOLTAGE
MAX1946 toc01
INPUT VOLTAGE (V)
QUIESCENT SUPPLY CURRENT (µA)
5.04.54.03.53.02.52.01.51.00.50
10
20
30
40
50
0
5.5
V
SEL
= V
ON
= GND
QUIESCENT SUPPLY CURRENT
vs. TEMPERATURE
MAX1946 toc02
TEMPERATURE (°C)
QUIESCENT SUPPLY CURRENT (µA)
603510-15
33
36
39
42
45
30
-40 85
V
SEL
= V
ON
= GND
V
IN
= 5V
V
IN
= 5.5V
V
IN
= 2.7V
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
MAX1946 toc03
TEMPERATURE (°C)
SHUTDOWN SUPPLY CURRENT (µA)
6035-15 10
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.4
2.6
-40 85
ON = GND, V
SEL
= 5V
Typical Operating Characteristics
(Circuit of Figure 2, V
IN
= 5V, C
IN
= 0.1µF, C
OUT
= 1µF, ON = SEL, T
A
= +25°C, unless otherwise noted.)