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SC1144 View Datasheet(PDF) - Semtech Corporation

Part NameDescriptionManufacturer
SC1144 PROGRAMMABLE, HIGH PERFORMANCE MULTI-PHASE, PWM CONTROLLER Semtech
Semtech Corporation Semtech
SC1144 Datasheet PDF : 11 Pages
1 2 3 4 5 6 7 8 9 10
PROGRAMMABLE, HIGH PERFORMANCE
MULTI-PHASE, PWM CONTROLLER
SC1144
Preliminary - August 24, 1999
ABSOLUTE MAXIMUM RATINGS
Parameter
VCC5V to GND
FBG to GND
VCC12V 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
Vcc12v
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, VCC 12V = 12V, 4-Phase operation.
PARAMETER
SYMBOL
Supply Voltage Range
UVLO Range
UVLO Hystersis
UVLO Range
UVLO Hystersis
Supply Voltage Range
Supply Current
Supply Current
Reference Current Pin Voltage
Vid0-4 Clock Select & Divide
Select Logic Threshold
Vid0-4 Clock Select & Divide
Select Input Bias Current
Enable Pin
DRV0-3 Output Voltage
VCC12V
VCC5V
VCC5V
VCC12V
VCC12V
VCC5V
VCC12V
VCC5V
VREF
VINL
VINH
IINL
IINH
VINL
VINH
VOL
VOH
DRV0-3 Source Current
ISRC
DRV0-3 Sink Current
ISNK
CONDITIONS
DRV Outputs open
VOUT = 2.00V, IO = 0
Iref = 250µA
Logic Low
Logic High
Vid0-4=0V
Vid0-4=4.5V
Isink = 1mA
Isource=1ma,OUTV=Vcc12
VOUT = 2.00V
VOUT = 2.00V
MIN TYP
10.0 12.0
3.9
50
9.0
100
4.5 5.0
12
2.05
2
2
VCC12
-1
20
40
MAX
14.0
5.5
20
40
0.8
-20
+50
.8
.3
UNITS
V
V
mV
V
mV
V
mA
mA
V
V
V
µA
µA
V
V
V
V
mA
mA
The SC1144 is patent pending
© 1999 SEMTECH CORP.
2
652 MITCHELL ROAD NEWBURY PARK CA 91320
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