High-Speed Step-Down Controller CXSD62359 uses constant on-time control scheme to handle wide input/output voltage ratios with ease and provides 100ns “instant-on” response to load transients while ma

   产品概述 返回TOPfYi嘉泰姆

     CXSD62359 uses constant on-time control scheme to handle wide input/output voltage ratios with ease and provides 100ns “instant-on” response to load transients while maintaining a relatively constant switching frequency. The CXSD62359 achieves high efficiency at a reduced cost by eliminating the current-sense resistor found in traditional current-mode PWMs. Efficiency is further enhanced by an ability to drive very large synchronous rectifier MOSFETs. Single-stage buck conversion allows these devices to directly step down high-voltage batteries for the highest possible efficiency. Alternatively, two-stage conversion (stepping down the +5V system supply instead of the battery) at a higher switching frequency allows the minimum possible physical size. The CXSD62359 is intended for CPU core, chipset, DRAM, or other low-voltage supplies as low as 0.75V. The CXSD62359 is available in 16-pin TQFN 3X3 and SSOP-16 package and includes over voltage protection

   产品特点 返回TOPfYi嘉泰姆

Ultra-High Efficiency fYi嘉泰姆

No Current-Sense Resistor (Lossless ILIMIT) fYi嘉泰姆

Quasi-PWM with 100ns Load-Step Response fYi嘉泰姆

1% VOUT Accuracy Over Line and Load fYi嘉泰姆

0.75V to 3.6V Adjustable Output Range fYi嘉泰姆

4.5V to 24V Battery Input Range fYi嘉泰姆

Integrated Boost Diode fYi嘉泰姆

OVP & UVP fYi嘉泰姆

1.7ms Soft-Start fYi嘉泰姆

Drives Large Synchronous-Rectifier FETs fYi嘉泰姆

Power-Good IndicatorfYi嘉泰姆

   应用范围 返回TOPfYi嘉泰姆

Notebook Computers fYi嘉泰姆

CPU Core Supply fYi嘉泰姆

I/O Supply fYi嘉泰姆

Chipset/RAM Supply as Low as 0.75V fYi嘉泰姆

Networking Power SupplyfYi嘉泰姆

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