FAN6520B Datasheet | Fairchild Semiconductor

Features - Accepts 1.5V to 5V for VIN - Output Range 0.8V to VIN Description The FAN6520B makes simple work out of implementing a plete control and protection scheme for a DC-DC stepdown converter. Designed to drive N-channel MOSFETs in a synchronous buck topology, the FAN6520B integrates the control, output adjustment, and monitoring functions into a single 8-lead package. The FAN6520B is easy to use, employs a single feedback 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 frequency oscillator reduces design plexity, while balancing 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. - - - - - 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 - 300k Hz 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 Ordering Information Part Number FAN6520BM FAN6520BMX FAN6520BIM FAN6520BIMX Temperature Range 0°C to 70°C 0°C to 70°C - 40°C to 85°C - 40°C to 85°C Package SOIC-8 SOIC-8 SOIC-8 SOIC-8 Packing Rails Tape and Reel Rails Tape and Reel ©2006 Fairchild Semiconductor Corporation .fairchildsemi. FAN6520B Rev....