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SC1578CS Datasheet(PDF) 2 Page - Semtech Corporation

Part # SC1578CS
Description  HIGH-EFFICIENCY STEP-DOWN DC-DC CONVERTER
PDF  5 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC1578CS Datasheet(HTML) 2 Page - Semtech Corporation

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© 1997 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
HIGH-EFFICIENCY STEP-DOWN
DC-DC CONVERTER
SC1578
January 29, 1998
Parameter
Conditions
Min
Typ
Max
Units
Operation Voltage
4
24
V
Quiescent Current
V
FB = 1.5V
90
160
µA
Shutdown Mode Current
V
SHDN = 0V
8
20
µA
Internal Reference Voltage
1.16
1.22
1.28
V
Driver Sinking “On resistance”
16
Ω
Driver Sourcing “On resistance”
11
Ω
Current Sense Comparator
Threshold
1578
1578A
V
CS+ = 13V
42
52
57
57
72
62
mV
Shutdown Threshold
0.8
1.5
2.4
V
SHDN Pin Leakage Current
V
SHDN < 15V
1
µA
Duty Cycle
V
DUTY = VIN
71
%
Oscillator Frequency
V
DUTY = VIN
225
kHz
TYPICAL PERFORMANCE CHARACTERISTICS
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, T
A = 25°C, VIN = 13V



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