Datasheet

MAX1946
Single USB Switch with Autoreset and
Fault Blanking in Tiny TDFN
_______________________________________________________________________________________ 5
SWITCH OFF-LEAKAGE
vs. TEMPERATURE
MAX1946 toc04
TEMPERATURE (°C)
SWITCH OFF-LEAKAGE (nA)
603510-15
0.1
1
10
100
1000
0.01
-40 85
ON = OUT = GND, V
SEL
= 5V
NORMALIZED ON-RESISTANCE
vs. TEMPERATURE
MAX1946 toc05
TEMPERATURE (°C)
NORMALIZED R
ON
603510-15
0.8
0.9
1.0
1.1
1.2
1.3
0.7
-40 85
CONTINUOUS CURRENT-LIMIT
THRESHOLD vs. TEMPERATURE
MAX1946 toc06
TEMPERATURE (°C)
CONTINUOUS CURRENT THRESHOLD (mA)
603510-15
1040
1050
1060
1070
1080
1090
1030
-40 85
V
IN
= 5.5V
V
IN
= 5.0V
V
IN
= 2.7V
TURN-ON TIME
vs. TEMPERATURE (t
ON
+ t
RISE
)
MAX1946 toc07
TEMPERATURE (°C)
TURN-ON TIME (ms)
603510-15
1.5
2.0
2.5
3.0
3.5
4.0
1.0
-40 85
V
IN
= 5V
V
IN
= 5.5V
V
IN
= 2.7V
R
OUT
= 10Ω
TURN-OFF TIME vs. TEMPERATURE
(t
OFF
+ t
FALL
)
MAX1946 toc08
TEMPERATURE (°C)
TURN-OFF TIME (ms)
603510-15
2.3
2.6
2.9
3.2
3.5
3.8
2.0
-40 85
V
IN
= 5V
V
IN
= 5.5V
V
IN
= 2.7V
R
OUT
= 10Ω
FAULT-BLANKING TIME
vs. TEMPERATURE
MAX1946 toc09
TEMPERATURE (°C)
FAULT-BLANKING TIME (ms)
603510-15
19.2
19.8
20.0
20.4
20.6
21.0
19.0
-40 85
V
IN
= 2.7V
V
IN
= 5V
V
IN
= 5.5V
19.4
19.6
20.2
20.8
FAULT OUTPUT LOW VOLTAGE
vs. TEMPERATURE
MAX1946 toc10
TEMPERATURE (°C)
603510-15
165
225
245
285
305
345
145
-40 85
V
IN
= 2.7V
V
IN
= 5V
V
IN
= 5.5V
185
205
265
325
I
SINK
= 1mA
FAULT OUTPUT LOW VOLTAGE (mV)
AUTORESET CURRENT
vs. TEMPERATURE
MAX1946 toc11
TEMPERATURE (°C)
AUTORESET CURRENT (mA)
10
15
20
25
30
35
40
5
603510-15-40 85
V
IN
= 2.7V
V
IN
= 5V
V
IN
= 5.5V
AUTORESET CURRENT
vs. INPUT VOLTAGE
MAX1946 toc12
INPUT VOLTAGE (V)
AUTORESET CURRENT (mA)
11
15
19
23
27
31
35
7
5.14.74.33.93.5 5.5
5.34.94.54.13.7
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
Typical Operating Characteristics (continued)
(Circuit of Figure 2, V
IN
= 5V, C
IN
= 0.1µF, C
OUT
= 1µF, ON = SEL, T
A
= +25°C, unless otherwise noted.)