CXSD62357 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

   产品概述 返回TOPhpw嘉泰姆

     CXSD62357 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 CXSD62357 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. The noiseless pulse-skipping mode setting maintains the switching frequency above 25kHz to eliminates the audio noise. The CXSD62357 is intended for CPU core, chipset, DRAM, or other low-voltage supplies as low as 0.5V. The CXSD62357 is available in TQFN2X2-12 package.

   产品特点 返回TOPhpw嘉泰姆

„ Ultra-High Efficiency hpw嘉泰姆

„ 4700ppm/°C RDS(ON) Current Sensing ( without Current-Sense Resistor ) hpw嘉泰姆

„ Quasi-PWM with 100ns Load-Step Response „ Built in 1% 0.5V Reference Voltage hpw嘉泰姆

„ 0.5V to 3.3V Adjustable Output Range hpw嘉泰姆

„ 4.5V to 28V Battery Input Range hpw嘉泰姆

„ Integrated Boost Diode hpw嘉泰姆

„ OVP & UVP hpw嘉泰姆

„ 1.5ms Voltage Servo Soft-Start hpw嘉泰姆

„ Drives Large Synchronous-Rectifier FETs hpw嘉泰姆

„ Power-Good Indicator hpw嘉泰姆

„ Thermal Shutdown (Non-latch)hpw嘉泰姆

   应用范围 返回TOPhpw嘉泰姆

„ Notebook Computers hpw嘉泰姆

„ CPU Core Supply hpw嘉泰姆

„ I/O Supply hpw嘉泰姆

„ Chipset/RAM Supply as Low as 0.5Vhpw嘉泰姆

   技术规格书（产品PDF) 返回TOP hpw嘉泰姆

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