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SC418
5
Electrical Characteristics (continued)
Parameter
Conditions
Min  Typ  Max  Units
Fault Protection
I
LIM
 Source Current
9    0        糀
I
LIM
 Source Current Temperature Coefficient
(2)
0.4
%/癈
I
LIM
Comparator Offset
With respect to AGND
-8    0    +8    mV
Output Under-Voltage Threshold
V
FB
 with respect to internal 500mV reference,
8 consecutive cycles
-25
%
Smart Power-Save Protection Threshold
(2)
V
FB
 with respect to internal 500mV reference
+0
%
Over-Voltage Protection Threshold
V
FB
 with respect to internal 500mV reference
+20
%
Over-Voltage Fault Delay
(2)
 
5
約
Over-Temperature Shutdown
(2)
0癈 hysteresis
50
癈
Logic Inputs/Outputs
Logic Input High Voltage - EN, ENL
(4)
.0
V
Logic Input High Voltage - PSV
Forced continuous mode operation;
PSV with respect to VDDA
-0.4
V
Logic Input Low Voltage - EN, ENL
With respect to AGND
0.4    V
EN Input Bias Current
EN = VDDA or AGND
-0
+0   糀
ENL Input Bias Current
V
IN
 = 28V
-        +8   糀
FB, FBL Input Bias Current
FB, FBL = VDDA or AGND
-
+    糀
PSV Input Bias Current
PSV = VDDA

糀
Linear Dropout Regulator
FBL Accuracy
VLDO load = 0mA
0.735   0.75   0.765   V
Current Limit
Start-up and foldback;
V
LDO
 < 90% of programmed value
5
mA
Operating
35   200
VLDO to VOUT Switch-over Threshold
 (5)
-40
+40   mV
VLDO to VOUT Non-switch-over Threshold
 (5)
-450
+450   mV
VLDO to VOUT Switch-over Resistance
V
LDO
 = V
OUT
 = 5V
2.0
&
V
LDO
 = V
OUT
 = 3.3V
(6)
2.2
LDO Drop Out Voltage
(6)
V
IN
 to V
VLDO
, V
VLDO
 = 5V, VLDO load = 00mA
.2
V
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