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SC1144ABCSW Datasheet(PDF) 2 Page - Semtech Corporation |
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SC1144ABCSW Datasheet(HTML) 2 Page - Semtech Corporation |
2 / 11 page PROGRAMMABLE, HIGH PERFORMANCE MULTI-PHASE, PWM CONTROLLER SC1144 © 1999 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320 Preliminary - August 24, 1999 2 The SC1144 is patent pending ELECTRICAL CHARACTERISTICS Unless otherwise noted: T A = 25°C, VCC 5V = 5V, VCC 12V = 12V, 4-Phase operation. PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage Range V CC12V 10.0 12.0 14.0 V UVLO Range V CC5V 3.9 V UVLO Hystersis V CC5V 50 mV UVLO Range V CC12V 9.0 V UVLO Hystersis V CC12V 100 mV Supply Voltage Range V CC5V 4.5 5.0 5.5 V Supply Current V CC12V DRV Outputs open 12 20 mA Supply Current V CC5V V OUT = 2.00V, IO = 0 40 mA Reference Current Pin Voltage V REF Iref = 250µA 2.05 V Vid0-4 Clock Select & Divide V INL Logic Low 0.8 V Select Logic Threshold V INH Logic High 2 V Vid0-4 Clock Select & Divide I INL Vid0-4=0V -20 µA Select Input Bias Current I INH Vid0-4=4.5V +50 µA Enable Pin V INL .8 V V INH 2V DRV0-3 Output Voltage V OL I sink = 1mA .3 V V OH I source=1ma,OUTV=Vcc12 V CC12 -1 V DRV0-3 Source Current I SRC V OUT = 2.00V 20 mA DRV0-3 Sink Current I SNK V OUT = 2.00V 40 mA ABSOLUTE MAXIMUM RATINGS Parameter Symbol Limits Units V CC5V to GND V cc5v -0.3 to + 12 V FBG to GND FBG ± 1 V V CC12V to GND V cc12v -0.3 to +20 V Operating Temperature Range T A 0 to +70 °C Junction Temperature Range T J 0 to +125 °C Storage Temperature Range T STG -55 to +150 °C Thermal Resistance Junction to Case θ JC 25 °C/W Thermal Resistance Junction to Ambient θ JA 80 °C/W Lead Temperature (Soldering) 10 sec T LEAD 300 °C |
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