sc1182 Semtech Corporation, sc1182 Datasheet
sc1182
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sc1182 Summary of contents
Page 1
... The SC1182/3 linear sections are low dropout regula- tors. The SC1182 supplies 1.5V for GTL bus and 2.5V for non-GTL I/O. For the SC1183 both LDO’s are adjustable. PIN CONFIGURATION ...
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... Gain ( OVP threshold voltage OVP source current Power good threshold voltage Dead time Linear Sections Quiescent current Output Voltage (LDO1 SC1182) Output Voltage (LDO2 SC1182) Reference Voltage (SC1183) Feedback Pin Bias Current (SC1183) Gain ( Load Regulation Line Regulation Output Impedance Notes: (1) See Output Voltage table ...
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... CONVERTER, DUAL LOW DROPOUT REGULATOR CONTROLLER >setpoint +20% O 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 SC1182/3 Top View AGND 1 24 GATE2 2 23 LDOV 22 3 VID0 21 VID1 4 ...
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... MITCHELL ROAD NEWBURY PARK CA 91320 SC1182/3 = 25°C A TYP MAX UNITS 1.287 1.300 1.313 V 1.336 1.350 1.364 1.386 1.400 1.414 1.435 1.450 1.465 1 ...
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... August 25, 1998 APPLICATION CIRCUIT © 1998 SEMTECH CORP. PROGRAMMABLE SYNCHRONOUS DC/DC CONVERTER, DUAL LOW DROPOUT REGULATOR CONTROLLER 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC1182/3 5 ...
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... Various Various Various Various See Table Below (Not required for SC1182) Various See Table Below (Not required for SC1182) Various See Table Below (Not required for SC1182) Various See Table Below (Not required for SC1182) Various SEMTECH . 1 265 OUT ...
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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 SC1182/3 2.8V Std 2.8V Sync 2.8V Sync Lo Rds (Amps) 2.0V Std 2.0V Sync 2.0V Sync Lo Rds (Amps ...
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... August 25, 1998 LAYOUT GUIDELINES Careful attention to layout requirements are necessary for successful implementation of the SC1182/3 PWM controller. High currents switching at 200kHz 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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... Cout only, and connections between Cout and the load must be short, wide cop- per areas to minimize inductance and resistance. 5) The SC1182/3 is best placed over a quiet ground plane area, avoid pulse currents in the Cin, Q1, Q2 loop flowing in this area. PGNDH and PGNDL should be returned to the ground plane close to the package ...
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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 SC1182 OSC ...
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... These restrictions require SO-8 useable energy storage within the converter circuitry, either as extra output capacitance or, more usually, additional input capacitors. Choosing low ESR input capacitors will help maximize ripple rating for a given size. ) Package TO220 2 D PAK SO-8 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC1182/3 11 ...
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... August 25, 1998 OUTLINE DRAWING © 1998 SEMTECH CORP. PROGRAMMABLE SYNCHRONOUS DC/DC CONVERTER, DUAL LOW DROPOUT REGULATOR CONTROLLER 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC1182/3 JEDEC MS-013AD B17104B 12 ...