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SC461 датащи(PDF) 4 Page - Semtech Corporation

номер детали SC461
подробное описание детали  EcoSpeed짰 DC-DC Buck Controller with Integrated LDO
PDF  31 Pages
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производитель  SEMTECH [Semtech Corporation]
домашняя страница  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC461 датащи(HTML) 4 Page - Semtech Corporation

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SC461
4
Electrical Characteristics (continued)
Parameter
Conditions
Min
Typ
Max
Units
Input Supplies (continued)
VDDA + VDDP Supply Current(2)
ENL , EN = 0V
3
7
μA
Power-save operation
EN = 5V, PSV = open (float), V
FB > 600mV
0.4
mA
Forced Continuous Mode operation
Operating f
SW = 220kHz, PSV = VDDA, no load
14
FB Comparator Threshold
Static V
IN and load, 0 to +85 °C
0.5952
0.600
0.6048
V
Static V
IN and load, -40 to +85 °C
0.594
0.606
V
Frequency Range
Continuous mode operation
1000
kHz
Timing
On-Time
Forced Continuous Mode operation
V
IN = 15V, VOUT = 3V, RTON = 300kΩ, VDDA = 5V
1530
1700
1870
ns
Minimum On-Time
80
ns
Minimum Off-Time
250
ns
Soft-Start
Soft-Start Charge Current
3.0
μA
Analog Inputs/Outputs
VOUT Input Resistance
500
kΩ
Current Sense
Zero Cross Detector Threshold
LX with respect to PGND
-3
0
+3
mV
Power Good
Power Good Threshold
Upper limit, V
FB > internal 600mV reference
+20
%
Lower limit, V
FB < internal 600mV reference
-9
Startup Delay Time
EN rising edge to PGOOD rising edge, CSS = 10nF,
VDDA = 5V
12.5
ms
EN rising edge to PGOOD rising edge, CSS = 10nF,
VDDA = 3V
7.5
Fault (noise immunity) Delay Time
5
µs
Leakage
PGOOD = high impedance (open)
1
µA
Power Good On-Resistance
PGOOD = pulled low to AGND
9
Ω



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