SC1401 Ver la hoja de datos (PDF) - Semtech Corporation
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SC1401 Datasheet PDF : 17 Pages
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HIGH PERFORMANCE SYNCHRONOUS BUCK
CONTROLLER WITH LDO FOR PORTABLE
SC1401
POWER
November 21, 2000
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
Gate Driver Sink/Source
CONDITIONS
DL, DH, forced to 2V
MIN TYP MAX UNITS
2.0
A
Gate Driver On-Resistance
SYNC Input High Pulse1
SYNC Input Low Pulse Width1
SYNC Rise/Fall Time1
SYNC Input Frequency Range
Current-Sense Input Leakage
High or low
CSL = CSH = 5.5V
1.0
Ω
200
200
ns
200
240
350 kHz
20
µA
FB Input Leakage Current
LINEAR REGULATOR
VDD2 Input Voltage Range
VOUT Linear
GATEIO Source current
IOS Input Leakage Current
Line Regulation
Load Regulation
SUPPLY CURRENTS
VDD1 Operating Supply
Shutdown Supply Current
FB = 1.25V
1
µA
VDD2=12V, GATEIO=0V
IOS = 1.25V
ILOAD=0.5A
Vin=12V, ILOAD = 0.1A to 1A
5.0
30.0 V
VREF
5.5
V
2.6
mA
1
µA
0.03
%/V
0.85
%
VDD1 = 6V to 30V, V5V = 5V, SHDN = 0V
5
50
µA
15 25
µA
V5V Operating Supply Current
VDD2 Supply Current
V5V = 5V, no load on DH/DL, PSAVE = 0V
VDD2 = 12V
1.5 4
mA
5
mA
Note 1: Not tested.
© 2000 SEMTECH CORP.
4
652 MITCHELL ROAD NEWBURY PARK CA 91320
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