User Manual

Typical Operating Characteristics
(V
INA
= V
INB
= 5V, V
ONA
= V
ONB
= 0V (MAX1558), V
ONA
= V
ONB
= 5V (MAX1558H), R
ISET
= 26kΩ to GND. Typical values are at T
A
=
+25°C, unless otherwise noted.)
MAX1558/MAX1558H
Dual, 3mm x 3mm, 1.2A/Programmable-Current
USB Switches with Autoreset
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V
INA
= V
INB
= 5V, V
ONA
= V
ONB
= 0V (MAX1558), V
ONA
= V
ONB
= 5V (MAX1558H), R
ISET
= 26kΩ to GND, T
A
= -40°C to +85°C,
unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Turn-On Delay t
ON
R
OUT_
= 10Ω, C
OUT_
= 1µF, does not
include rise time (from ON asserted to
V
OUT_
= 10% V
IN_
)
0.5 4.0 ms
Turn-Off Delay from ON t
OFF
R
OUT_
= 10Ω, C
OUT_
= 1µF, does not
include rise time (from ON deasserted to
V
OUT_
= 90% V
IN_
)
1000
µs
V
IN_
= 2.7V to 4.0V 1.6
ONA/ONB Logic Input High
Voltage
V
IH
V
IN_
= 4.0V to 5.5V 2.0
V
V
IN_
= 2.7V to 4.0V 0.6
ONA/ONB Logic Input Low
Voltage
V
IL
V
IN_
= 4.0V to 5.5V 0.8
V
Logic Input Current V
ON_
= 0V or V
IN_
-1 +1 µA
FLT_ Output Low Voltage I
SINK
= 1mA 0.4 V
FLT_ Output High Leakage
Current
V
IN_
= V
FLT_
= 5.5V 1 µA
Autorestart Current In latched-off state, V
OUT_
= 0V 10 50 mA
Autorestart Threshold In latched-off state, rising 0.4 0.6 V
Autorestart Delay In latched-off state, V
OUT_
> 1V 8 40 ms
Note 3: Specifications from 0°C to -40°C are guaranteed by design but not 100% tested.
Note 4: The output voltage at which the device transitions from short-circuit current limit to continuous current limit. See the
Output-
Current Fault Protection section.
CURRENT-LIMIT PROGRAM vs. R
ISET
MAX1558/58H toc01
R
ISET
(kΩ)
CURRENT LIMIT (A)
40 48 52 564428 3632
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
1.6
0.5
24 60
QUIESCENT SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX1558/58H toc02
SUPPLY VOLTAGE (V)
QUIESCENT CURRENT (µA)
54321
10
20
30
40
50
60
0
06
QUIESCENT CURRENT vs. TEMPERATURE
MAX1558/58H toc03
TEMPERATURE (°C)
QUIESCENT CURRENT (µA)
603510-15
35
40
45
50
30
-40 85
V
IN_
= 5.5V
V
IN_
= 4.5V
V
IN_
= 5V