ACT4921QI
Rev 1.0, 18-Jan-2018
INTERNAL EFUSE
(VIN = 5V, TA = 25°C, unless otherwise specified)
PARAMETER
Normal Mode
CONDITIONS
MIN
TYP
MAX
UNIT
Operating Voltage Range
2.6
7
V
ISW = -2A, VIN= 3.3V or 5V, TJ = 25°C
ISW = -2A, VIN= 3.3V or 5V, TJ = 100°C
IOUT = 2A, VIN= 3.3V or 5V, TJ = 25°C
IOUT = 2A, VIN= 3.3V or 5V, TJ = 100°C
20
25
30
38
mΩ
mΩ
mΩ
mΩ
eFuse On-Resistance
Blocking FET On-Resistance
Programmable eFuse Current Limit
Range
VIN = 5V, Configured using ISET pin, Triggers nIRQ Pin
1
6
A
eFuse Current Limit Accuracy
Blocking FET Current Limit
-10
+10
%
VOUT-VB > 560mV or at initial startup
300
mA
VOUT-VB < 560mV except at initial startup
1800
ISET Monitor Current Ratio
eFuse Overcurrent Detection Deglitch
eFuse Overcurrent Current Shutdown
Current Limit Restart Time
eFuse Soft start
ISET current divided by eFuse current
1/20,000
10
µs
A
Shuts down after deglitch time and stays off for Off Time
6
100
6.6
ms
mV/us
V
CSS = 10nF
VIO = 1.8V
VIO = 1.8V
5.94
1.22
7.26
0.58
EN Input Low
EN Input High
V
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11
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