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SC1401ISS Arkusz danych(PDF) 4 Page - Semtech Corporation

Numer części SC1401ISS
Szczegółowy opis  HIGH PERFORMANCE SYNCHRONOUS BUCK CONTROLLER WITH LDO FOR PORTABLE POWER
PDF  17 Pages
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Producent  SEMTECH [Semtech Corporation]
Strona internetowa  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC1401ISS Arkusz danych(HTML) 4 Page - Semtech Corporation

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SC1401
© 2000 SEMTECH CORP.
652 MITCHELL ROAD
NEWBURY PARK CA 91320
HIGH PERFORMANCE SYNCHRONOUS BUCK
CONTROLLER WITH LDO FOR PORTABLE
POWER
November 21, 2000
4
ELECTRICAL CHARACTERISTICS (continued)
Unless specified: VDD1 = 12V, V5V = 5V, VDD2 = 12V SHDN = PSAVE = 5V, TA = -40 °C to +85 °C. Typical values are at TA = +25°C.
LINE PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Gate Driver Sink/Source
DL, DH, forced to 2V
2.0
A
Gate Driver On-Resistance
High or low
1.0
Ω
SYNC Input High Pulse1
200
SYNC Input Low Pulse Width1
200
ns
SYNC Rise/Fall Time1
200
SYNC Input Frequency Range
240
350
kHz
Current-Sense Input Leakage
CSL = CSH = 5.5V
20
µA
FB Input Leakage Current
FB = 1.25V
1
µA
LINEAR REGULATOR
VDD2 Input Voltage Range
5.0
30.0
V
VOUT Linear
VREF
5.5
V
GATEIO Source current
VDD2=12V, GATEIO=0V
2.6
mA
IOS Input Leakage Current
IOS = 1.25V
1
µA
Line Regulation
ILOAD=0.5A
0.03
%/V
Load Regulation
Vin=12V, ILOAD = 0.1A to 1A
0.85
%
VDD1 Operating Supply
5
50
µA
Shutdown Supply Current
VDD1 = 6V to 30V, V5V = 5V, SHDN = 0V
15
25
µA
V5V Operating Supply Current
V5V = 5V, no load on DH/DL, PSAVE = 0V
1.5
4
mA
VDD2 Supply Current
VDD2 = 12V
5
mA
SUPPLY CURRENTS
Note 1: Not tested.



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