FAN5182 Datasheet | Fairchild Semiconductor

Features - - Selectable 1-, 2-, or 3-Phase Operation at up to 1MHz per Phase Accuracy: Description The FAN5182 is a highly efficient, multiphase, synchronous buck switching regulator controller optimized for converting a 12V main supply into a highcurrent, low-voltage supply for use in point-of-load (POL) applications. It uses a multi-loop PWM architecture to drive the logic-level outputs at a programmable switching frequency that can be optimized for regulator size and efficiency. The phase relationship of the output signals can be programmed to provide 1-, 2-, or 3-phase operation, allowing for construction of up to three plementary, interleaved buck switching stages. The FAN5182 provides accurate and reliable overcurrent protection and adjustable current limiting. The FAN5182 is specified over the mercial temperature range of 0°C to +85°C and is available in a 20-lead Quarter-Size Outline Package (QSOP). - - .. FAN5182 FAN5182_NA3E229 FAN5182_NA3E231 2% 1% 3% Externally Adjustable 0.8V to 5V Output from a 12V Supply Logic-Level PWM Outputs for Interface to External High-Power Drivers Active Current Balancing Between all Phases Built-in Power-Good / Crowbar Functions Programmable Over-Current Protection with Adjustable Latch-Off Delay - - - Applications - - - Auxiliary Supplies DDR Memory Supplies Point-of-Load Supplies Ordering Information Part Number FAN5182QSCX_NL FAN5182QSCX_NA3E229_NL FAN5182QSCX_NA3E231_NL Temperature Range 0°C to 85°C 0°C to 85°C 0°C to 85°C Pb Free Yes Yes Yes Package QSOP-20L QSOP-20L QSOP-20L Packing Method Tape and Reel Tape and Reel Tape and Reel Quantity per Reel 2500 2500 2500 © 2005 Fairchild Semiconductor Corporation FAN5182 Rev. 1.1.1 .fairchildsemi. - Adjustable Output 1-, 2-, or 3-Phase Synchronous Buck Controller Block Diagram Figure 1. Block Diagram © 2005 Fairchild Semiconductor Corporation FAN5182 Rev. 1.1.1 .fairchildsemi. 2 - Adjustable Output 1-, 2-, or 3-Phase Synchronous Buck...