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SC3203 датащи(PDF) 4 Page - Semtech Corporation

номер детали SC3203
подробное описание детали  3A EcoSpeed짰 Step-Down Regulator with Power Save
PDF  20 Pages
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производитель  SEMTECH [Semtech Corporation]
домашняя страница  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC3203 датащи(HTML) 4 Page - Semtech Corporation

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SC3203
4
Parameter
Conditions
Min
Typ
Max
Units
Timing
On-time accuracy
VIN = 12V, VOUT = 3.3V
476
560
644
ns
Minimum Off-Time
260
ns
Automatic Restart Cycle Time
32
ms
Soft start
Soft start Time
From PWM Switching to Output Regulation
1.8
ms
Current Sense
Zero-Crossing Detector Threshold
LX - PGND
-10
0
+10
mV
Fault Protection
Output Under-Voltage Threshold
VFB with respect to nominal,
8 Consecutive Switching Cycles
75
%V
REF
Output Over-Voltage Threshold
VFB with respect to nominal
120
%V
REF
Smart PowerSave Protection Threshold
VFB with respect to nominal
110
%V
REF
OV, UV Fault Noise Immunity Delay
2.5
μs
Over-Temperature Shutdown
160
°C
PGOOD Output
PGOOD Startup Delay Time
From EN rising edge to PGOOD high
3.3
ms
PGOOD Under-voltage Threshold
FB rising edge
90
%
FB falling edge
85
%
PGOOD Over-voltage Threshold
FB rising edge
120
%
Enable Input(1)
EN Input Logic High Threshold (V
EN_BYP)
VIN = 12V; EN rising edge; BYP on; Switcher off
1.0
V
EN Input Logic High Threshold (V
EN_ON)
VIN = 12V; EN rising edge; BYP on, Switcher on
1.5
V
EN Input Voltage Hysteresis
Hysteresis at V
EN_ON threshold
100
mV
EN Input Current Hysteresis
Hysteresis at V
EN_ON threshold
1.75
μA
EN Input Bias Current
V
EN = 12V
-1
10
μA
EN Input Resistance
EN < V
EN_ON Threshold; EN rising edge
810
kΩ
Electrical Characteristics (continued)



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