SC411 Semtech Corporation, SC411 Datasheet - Page 4

• Manufacturer Part Number: SC411
• Description: Synchronous Buck Pseudo-Fixed Frequency Power Supply Controller
• Manufacturer: Semtech Corporation

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© 2007 Semtech Corp.
POWER MANAGEMENT
Electrical Characteristics (Cont.)
Parameter
Current Limit (Positive)
Fault Protection (Cont.)
Current Limit (Negative)
Output Under-Voltage Fault
Output Over-Voltage Fault
Over-Voltage Fault Delay
PGD Low Output Voltage
PGD Leakage Current
PGD UV Threshold
PGD Fault Delay
VCCA
Under-Voltage Threshold
Over-Temperature Lockout
Inputs/Outputs
Logic Input Low Voltage
Logic Input High Voltage
Logic Input High Voltage
EN/PSV Input Resistance
(2)
With respect to internal ref.
With respect to internal ref.
With respect to internal ref.
(PGND - LX), R
(PGND - LX), R
(PGND - LX), R
R Pulldown to VSSA
(100mV Hysteresis)
PSV Low (Floating)
FB forced outside
R Pullup to VCCA
FB forced above
10°C Hysteresis
FB in regulation,
OV Threshold
EN/PSV High
PGD window
EN/PSV Low
(PGND - LX)
Conditions
PGD = 5V
Sink 1mA
EN High,
Falling
ILIM
ILIM
ILIM
= 10kΩ
= 20kΩ
= 5kΩ
4
Min
25°C
-125
Typ
100
200
+16
165
-30
-10
4.0
2.0
1.5
1.0
50
5
5
Max
-160
-40°C to 125°C
Min
170
+12
-40
-12
3.7
3.1
35
80
Max
120
230
+20
-90
-25
0.4
4.3
1.2
65
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SC411
Units
mV
mV
mV
mV
MΩ
μA
°C
μs
μs
%
%
%
V
V
V
V
V