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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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RT9230CS датащи(PDF) 1 Page - List of Unclassifed Manufacturers |
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RT9230CS датащи(HTML) 1 Page - List of Unclassifed Manufacturers |
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1 / 10 page  RT9230 DS9230-03 July 2001 www.richtek-ic.com.tw 1 1.5V Advanced Dual PWM and Dual Linear Power Controller General Description The RT9230 is a 4-in-one power controller optimized for high-performance microprocessor and computer applications. The IC integrates two PWM controller, two linear controllers as well as monitoring and protection functions into a 28-pin SOP package. The first PWM controller regulates the microprocessor core voltage with a synchronous buck converter, while the second PWM controller supplies the computer system’s AGP 1.5V or 3.3V bus power with a standard buck converter. The first linear regulator provides power for the 1.5V GTL bus and the second linear regulator provides 1.8V power for the North/South Bridge core voltage and/or cache memory circuits. The RT9230 features an Intel-compatible, TTL 5-bit programmable DAC that adjusts the core voltage from 2.1V to 3.5V in 0.1V increments and from 1.3V to 2.05V in 0.05V steps. The 5-bit DAC has a typical ±1% tolerance. The second PWM controller is user- selectable for output level of 1.5V and 3.3V with ±2.5% accuracy. The linear controllers drives external N-MOSFET or NPN bipolar for the pass transistor to provide fixed output voltages of 1.5V ±3% and 1.8V ±3%. The RT9230 monitors all the output voltages. A Power -good signal is issued when the core voltage is within ±10% of the DAC setting and the other levels are above their under-voltage levels. Additional build-in over-voltage protection for the core output uses the lower MOSFET to prevent output voltage above 115% of the DAC setting. The PWM over-current function monitors the output current using the voltage drop across the MOSFET’s RDS(ON), which eliminates the need for a current sensing resistor. Ordering Information RT9230 Features 4-in-one Regulated Voltages for Microprocessor Core, AGP Bus, North/South Bridge and/or Cache Memory, GTL Bus Power Compatible with HIP6020 Power-good Output Voltage Monitor Switching section 5-bit DAC Programmable from 1.3V to 3.5V ±±±±1% DAC Accuracy Fast Transient Response Full 0% to 100% Duty Cycle Driver Fixed 200kHz Switching Frequency Adaptive Non-overlapping Gate Driver Over-current Monitor Uses MOSFET RDS(ON) Over-voltage Protection Uses Lower MOSFET Linear Section Fixed Linear Regulator Output Voltage MOSFET or NPN Driving Capability Ultra Fast Response Speed Under-voltage Protection Internal Thermal Shutdown Applications Full Motherboard Power Regulation for Computer Low-voltage Distributed Power Supplies Pin Configurations Part Number Pin Configurations RT9230CS (Plastic SOP-28) TOP VIEW Operating temperature range C: Commercial standard Package type S : SOP-28 1 2 3 4 5 6 7 8 9 10 11 12 17 18 19 20 21 22 23 24 25 26 27 28 13 14 16 15 PHASE2 VID4 VID3 VID2 VID1 VID0 PGOOD OCSET2 VSEN2 UGATE2 SS SELECT FAULT VSEN4 LGATE1 VCC UGATE1 PHASE1 PGND OCSET1 VSEN1 FB1 VSEN3 DRIVE3 GND NC VAUX DRIVE4 |
Аналогичный номер детали - RT9230CS |
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Аналогичное описание - RT9230CS |
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