User Manual

MAX1558/MAX1558H
Dual, 3mm x 3mm, 1.2A/Programmable-Current
USB Switches with Autoreset
_______________________________________________________________________________________ 3
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
= 0°C to +85°C,
unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 3)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Output Rise Time t
RISE
C
OUT_
= 1µF, R
OUT_
= 10Ω, (from 10% to
90% of V
OUT_
)
4ms
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_
)
100 1000
µs
Output Fall Time t
FALL
C
OUT_
= 1µF, R
OUT_
= 10Ω (from 90% to
10% of V
OUT_
)
3ms
Thermal-Shutdown Threshold 10°C hysteresis
+160
°C
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 25 50 mA
Autorestart Threshold In latched-off state, rising 0.4 0.5 0.6 V
Autorestart Delay In latched-off state, V
OUT_
> 1V 8 20 40 ms
ELECTRICAL CHARACTERISTICS
(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
Supply Voltage Range 2.7 5.5 V
V
IN_
= 5V, T
A
= +25°C75
Switch On-Resistance R
ON
V
IN_
= 4.4V, T
A
= 0°C to +85°C 105
mΩ
Standby Supply Current Both switches disabled 6 µA
Quiescent Supply Current Both switches enabled 75 µA
OUT_ Off-Leakage Current Switches disabled, V
OUTA
= V
OUTB
= 0V 10 µA
Undervoltage-Lockout Threshold
V
UVLO
Rising edge, 3% hysteresis 2.3 2.7 V
Continuous Load Current R
ISET
= 26kΩ 1.2 A
R
ISET
= 26kΩ
1.20 1.60
R
ISET
= 39kΩ
0.80 1.05
Current-Limit Threshold
V
IN_
- V
OUT_
= 0.5V
R
ISET
= 60kΩ
0.50 0.70
A
Peak Short-Circuit Current Limit I
SHORT
V
OUT_
= 0V
(I
OUT_
pulsing)
R
ISET
= 26kΩ
1.45 2.60
A
(PEAK)
Fault-Blanking Timeout Period From I
LIMIT
condition to 50% of V
FLT_
840ms