SC1185 Semtech Corporation, SC1185 Datasheet
SC1185
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SC1185 Summary of contents
Page 1
... The SC1185 linear sections are low dropout regula- tors supplying 1.5V for GTL bus and 2.5V for non- GTL I/O. The Reference voltage is made available for external linear regulators. ...
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... DL-PGNDL = 1.5V VOSENSE VIDx 2.4V VIDx = 5V LDOV = 12V Iref 100µA LDOS (1,2) to GATE (1, 6.5V GATE GATE(1,2)-AGND;VCC=LDOV=0V 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC1185 SC1185A Symbol Maximum Units V -0 ± -0 +70 ° +125 °C ...
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... CONVERTER, DUAL LOW DROPOUT REGULATOR CONTROLLER GATE1 O LDOS1 LDOS2 PWRGOOD PGNDH PGNDL Note: (1) All logic level inputs and outputs are open collector TTL compatible. 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC1185 SC1185A Top View AGND 1 24 GATE2 2 23 LDOV 22 VID0 ...
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... MITCHELL ROAD NEWBURY PARK CA 91320 SC1185 SC1185A < 85°C j “A” Version TYP MAX UNITS 1.300 1.313 V 1.350 1.364 1.400 1.414 1.450 1.465 1.500 1.515 1 ...
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... PRELIMINARY - January 6, 1999 APPLICATION CIRCUIT © 1999 SEMTECH CORP. PROGRAMMABLE SYNCHRONOUS DC/DC CONVERTER, DUAL LOW DROPOUT REGULATOR CONTROLLER 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC1185 SC1185A 5 ...
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... Various 8 Turns 16AWG on MICROMETALS T50-52D core See notes FET selection requires trade-off between efficiency and cost. Absolute maximum R IR .25 30V SOT23 (or equavilent equivalent IRC OAR-1 Series Various Various Various SEMTECH 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC1185 SC1185A = 22 m for Q1,Q2 DS(ON) 6 ...
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... Typical Efficiency at Vo=2.8V 95% 90% 85% 80% 75% 70 Typical Efficiency at Vo=2.0V Transient Response Vo=2.8V, Io=300mA to 10A 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC1185 SC1185A 2.8V Std 2.8V Sync 2.8V Sync Lo Rds (Amps) 2.0V Std 2.0V Sync 2.0V Sync Lo Rds (Amps) 14 ...
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... PRELIMINARY - January 6, 1999 LAYOUT GUIDELINES Careful attention to layout requirements are necessary for successful implementation of the SC1185 PWM controller. High currents switching at 140kHz are pre- sent in the application and their effect on ground plane voltage differentials must be understood and mini- mized. 1). The high power parts of the circuit should be laid out first ...
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... Output Capacitor(s) and the Cin, Q1, Q2 loop. Under no circumstances should AGND be returned to a ground inside the Cin, Q1, Q2 loop. 6) Vcc for the SC1185 should be supplied from the 5V Currents in various parts of the power section © 1999 SEMTECH CORP. PROGRAMMABLE SYNCHRONOUS DC/DC ...
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... The resulting power dissipation in the top FET will be first order approximation convenient to only consider conduction losses to determine FET suitability. For a 5V in; 2.8V out at 14.2A requirement, typical FET losses would be: 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC1185 SC1185A OSC ...
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... D PAK additional input capacitors. Choosing low ESR input SO-8 capacitors will help maximize ripple rating for a given size. Package 2 D PAK 2 D PAK SO-8 o C/W 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC1185 SC1185A 11 ...
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... PRELIMINARY - January 6, 1999 OUTLINE DRAWING © 1999 SEMTECH CORP. PROGRAMMABLE SYNCHRONOUS DC/DC CONVERTER, DUAL LOW DROPOUT REGULATOR CONTROLLER 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC1185 SC1185A JEDEC MS-013AD B17104B 12 ...