SC417/SC427
5
Electrical Characteristics (continued)
Parameter
Conditions
Min Typ Max Units
Fault Protection
Valley Current Limit
R
ILIM
= 5.9k &
6
8 10 A
I
LIM
Source Current
10
糀
I
LIM
Comparator Offset
With respect to AGND
-10 0 +10 mV
Output Under-Voltage Fault
V
FB
with respect to internal 500mV reference,
8 consecutive clocks
-25
%
Smart Power-save Protection Threshold
(2)
V
FB
with respect to internal 500mV reference
+10
%
Over-Voltage Protection Threshold
V
FB
with respect to internal 500mV reference
+20
%
Over-Voltage Fault Delay
(2)
5
約
Over-Temperature Shutdown
(2)
10癈 hysteresis
150
癈
Logic Inputs/Outputs
Logic Input High Voltage
ENL
1.0
V
Logic Input Low Voltage
ENL
0.4 V
EN/PSV Input for PSAVE Operation
(2)
V5V = 5V
2.2
5 V
EN/PSV Input for Forced Continuous Operation
(2)
1
2 V
EN/PSV Input for Disabling Switcher
(2)
0.4 V
EN/PSV Input Bias Current
EN/PSV= V5V or AGND
-10
+10 糀
ENL Input Bias Current
V
IN
= 28V
11 18 糀
FBL, FB Input Bias Current
FBL, FB = V5V or AGND
-1
+1 糀
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