SC1146 查看數據表（PDF） - Semtech Corporation
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SC1146 Datasheet PDF : 10 Pages
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VRM9.0 PROGRAMMABLE, MULTI-PHASE,
HIGH PERFORMANCE PWM CONTROLLER
SC1146
July 25, 2000
ABSOLUTE MAXIMUM RATINGS
Parameter
VCC5V to GND
FBG to GND
VCC2 to GND
Operating Temperature Range
Junction Temperature Range
Storage Temperature Range
Thermal Resistance Junction to Case
Thermal Resistance Junction to Ambient
Lead Temperature (Soldering) 10 sec
Symbol
Vcc5v
FBG
Vcc2
TA
TJ
TSTG
θJC
θJA
TLEAD
Limits
-0.3 to + 12
±1
-0.3 to +20
0 to +70
0 to +125
-55 to +150
25
80
300
Units
V
V
V
°C
°C
°C
°C/W
°C/W
°C
ELECTRICAL CHARACTERISTICS
Unless otherwise noted: TA = 25°C, VCC 5V = 5V, VCC2 = 5V, 4-Phase operation.
PARAMETER
Supply Voltage Range
UVLO Range
UVLO Hystersis
SYMBOL
VCC2
VCC5V
VCC5V
CONDITIONS
MIN TYP
3.9 5.0
3.9 5.0
TBD
MAX
15.0
6.0
UNITS
V
V
mV
Supply Voltage Range
VCC5V
4.5 5.0
5.5
V
Supply Current
VCC2
DRV Outputs open
10
mA
Supply Current
VCC5V
VOUT = 2.00V, IO = 0
40
mA
Reference Current Pin Voltage VREF
Iref = 250µA
2.05
V
VID0-4 Clock Select & Divide
VINL
Logic Low
0.8
V
Select Logic Threshold
VINH
Logic High
2
V
VID0-4 Clock Select & Divide
IINL
Vid0-4 = 0V
-20
µA
Select Input Bias Current
IINH
Vid0-4 = 4.5V
+50
µA
Enable Pin
VINL
.8
V
VINH
2
V
Maximum Duty Cycle
DMAX
FB = 0V
75
%
DRV0-3 Output Voltage
VOL
Isink = 1mA
.3
V
VOH
Isource = 1mA, PWRGOOD = Vcc5v VCC2-1
V
DRV0-3 Source Current
ISRC
VOUT = 2.00V
40
mA
DRV0-3 Sink Current
ISNK
VOUT = 2.00V
20
mA
The SC1146 is patent pending
© 2000 SEMTECH CORP.
2
652 MITCHELL ROAD NEWBURY PARK CA 91320
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