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SC412AEVB 数据表(PDF) 3 Page - Semtech Corporation

部件名 SC412AEVB
功能描述  Synchronous Buck Controller
PDF  22 Pages
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制造商  SEMTECH [Semtech Corporation]
网页  http://www.semtech.com
标志 SEMTECH - Semtech Corporation

SC412AEVB 数据表(HTML) 3 Page - Semtech Corporation

  SC412AEVB Datasheet HTML 1Page - Semtech Corporation SC412AEVB Datasheet HTML 2Page - Semtech Corporation SC412AEVB Datasheet HTML 3Page - Semtech Corporation SC412AEVB Datasheet HTML 4Page - Semtech Corporation SC412AEVB Datasheet HTML 5Page - Semtech Corporation SC412AEVB Datasheet HTML 6Page - Semtech Corporation SC412AEVB Datasheet HTML 7Page - Semtech Corporation SC412AEVB Datasheet HTML 8Page - Semtech Corporation SC412AEVB Datasheet HTML 9Page - Semtech Corporation Next Button
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Parameter
Conditions
25°C
-40° to 85°C
Units
Min
Typ
Max
Min
Max
Timing
On-Time
Continuous Mode Operation
V
OUT = 1.1V
250
225
275
ns
Minimum On-Time
100
ns
Minimum Off-Time
350
Maximum Duty Cycle
V
BAT < VOUT +0.2
V
OUT < On-Time Threshold
85
80
%
Soft-Start
Soft-Start Time
I
OUT = ILIM/2
1000
μs
Analog Inputs/Outputs
VOUT Input Resistance
500
kΩ
Current Sense
Zero-Crossing
Detector Threshold
LX - GND
0
-7
+7
mV
Power Good
Power Good Threshold
1% HysteresisTypical
-12%
-9%
-15%
%
Threshold Delay Time(1)
5
μs
Leakage
1
μA
Fault Protection
ILIM Source Current
10
9
11
μA
ILIM Comparator Offset
0
-10
+10
mV
Current Limit (Negative)
LX - GND
80
60
100
mV
Output Under-Voltage Fault
FB with Respect to REF
-30
-35
-25
%
Steady-State
Over-Voltage Fault
FB with Respect to REF
20
+17
+23
%
Over-Voltage Fault Delay(1)
FB Forced 50mV Above
Over-Voltage Fault Threshold
5
μs
VCCA Under-Voltage
(UVLO)
Conditions = Falling Edge
(Hysteresis 100mV)
4
3.7
4.35
V
Over-Temperature
Shutdown(1)
160
°C
Logic Inputs/Outputs
Logic Input Hgh Voltage
EN
1.2
V
Logic Input Low Voltage
EN
0.4
V
3
© 2006 Semtech Corp.
www.semtech.com
SC412A
POWER MANAGEMENT
Electrical Characteristics (continued)



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