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FAN6520BIMX 데이터시트(PDF) 1 Page - Fairchild Semiconductor |
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FAN6520BIMX 데이터시트(HTML) 1 Page - Fairchild Semiconductor |
1 / 14 page ©2006 Fairchild Semiconductor Corporation 1 www.fairchildsemi.com February 2006 FAN6520B Rev. 1.0.3 FAN6520B Single Synchronous Buck PWM Controller Features ■ Accepts 1.5V to 5V for VIN ■ Output Range 0.8V to VIN – 0.8V Internal Reference – ±1.5% Over Line Voltage and Temperature ■ Drives N-Channel MOSFETs ■ Simple Single-Loop Control Design – Voltage-Mode PWM Control ■ Fast Transient Response – High-Bandwidth Error Amplifier – Full 0% to 100% Duty Cycle ■ Small Converter Size – 300kHz Fixed Frequency Oscillator – Internal Soft-Start – 8-Lead SOIC Applications ■ Power Supplies for PC Subsystems and Peripherals ■ MCH, GTL, and AGP Supplies ■ Cable Modems, Set Top Boxes, and DSL Modems ■ DSP, Memory ■ Low-Voltage Distributed Power Supplies ■ ACPI Power Control ■ 5V Input DC-DC Regulator Description The FAN6520B makes simple work out of implementing a complete control and protection scheme for a DC-DC stepdown converter. Designed to drive N-channel MOSFETs in a synchro- nous buck topology, the FAN6520B integrates the con- trol, output adjustment, and monitoring functions into a single 8-lead package. The FAN6520B is easy to use, employs a single feed- back loop, and voltage-mode control with fast transient response. The output voltage can be precisely regulated to as low as 0.8V, with a maximum tolerance of ±1.5% over temperature and line voltage variations. A fixed fre- quency oscillator reduces design complexity, while bal- ancing typical application cost. The error amplifier features a 15MHz gain-bandwidth product and an 8V/µs slew rate which enables high converter bandwidth for fast transient performance. The resulting PWM duty cycles range from 0% to 100%. The FAN6520B is rated for operation from 0° to +70°C with the FAN6520BI rated from –40° to +85°C. Ordering Information Part Number Temperature Range Package Packing FAN6520BM 0°C to 70°C SOIC-8 Rails FAN6520BMX 0°C to 70°C SOIC-8 Tape and Reel FAN6520BIM –40°C to 85°C SOIC-8 Rails FAN6520BIMX –40°C to 85°C SOIC-8 Tape and Reel |
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