外部可调软启动和软停止CXSD62172B 70%欠压保护125%过电压保护LDO引脚上电复位监控可编程定时来增加输出电压

目录

1.产品概述       2.产品特点     leI嘉泰姆

3.应用范围       4.技术规格书下载（PDF文档）leI嘉泰姆

5.产品封装       6.电路原理图  leI嘉泰姆

7.相关产品leI嘉泰姆

   产品概述 返回TOPleI嘉泰姆

The CXSD62172 CXSD62172A CXSD62172B is a 8A, synchronous, step-down converter with integrated 30mW N-channel High-Side MOSFET and 9mW Low-Side MOSFET. The CXSD62172 CXSD62172A CXSD62172B steps down high voltage to generate low-voltage chipset or RAM supplies in notebook computers. The CXSD62172 CXSD62172A CXSD62172B provides excellent transient response and accurate DC voltage output in either PFM or PWM Mode. In Pulse Frequency Mode (PFM), the CXSD62172 CXSD62172A CXSD62172Bprovides very high efficiency over light to heavy loads with loadingmodulated switching frequencies. In PWM Mode, the converter works nearly at constant frequency for low-noise requirements. The CXSD62172 CXSD62172A CXSD62172Bis equipped with accurate current-limit, output under-voltage, and output over-voltage protections, perfect for various applications. A Power-On-Reset function monitors the voltage on VLDO to prevent wrong operation during power-on. The CXSD62172 CXSD62172A CXSD62172Bhas external adjustable soft-start and built-in an integrated output discharge method for soft stop. A soft-start ramps up the output voltage with programmable timing to reduce the start-up current. A soft-stop function actively discharges the output capacitors. The CXSD62172 CXSD62172A CXSD62172Bis available in TQFN4x4-23 (Power PAK).

   产品特点 返回TOPleI嘉泰姆

· Adjustable Output Voltage from +0.8V to +12V leI嘉泰姆

- 0.8V Reference Voltage - +1% Accuracy over Temperature leI嘉泰姆

· Operates from An Input Battery Voltage Range of +2.7V to +28V leI嘉泰姆

· 20mA Low Dropout Regulator (LDO) with Fixed 5. 3V Output leI嘉泰姆

· Power-On-Reset Monitoring on LDO pin leI嘉泰姆

· Excellent line and load transient responses leI嘉泰姆

· PFM mode for increased light load efficiency leI嘉泰姆

· Programmable PWM Frequency from 100kHz to 1000kHz leI嘉泰姆

· Integrated 30mW at LDO=5V N-Channel MOSFET For High Side leI嘉泰姆

· Integrated 9mW at LDO=5VN-Channel MOSFET For Low Side leI嘉泰姆

· Integrated Bootstrap Forward P-CH MOSFET leI嘉泰姆

· External Adjustable Soft-Start and Soft-Stop leI嘉泰姆

· Selectable Forced PWM or automatic PFM/PWM mode leI嘉泰姆

· Power Good Monitoring leI嘉泰姆

· 70% Under-Voltage Protection leI嘉泰姆

· 125% Over-Voltage Protection leI嘉泰姆

· Current-Limit Protection leI嘉泰姆

- Using Sense Low-Side MOSFET’s RDS(ON) leI嘉泰姆

· Over-Temperature Protection leI嘉泰姆

· TQFN-23 4mmx4mm package leI嘉泰姆

· Lead Free and Green Device Available (RoHS Compliant)leI嘉泰姆

   应用范围 返回TOPleI嘉泰姆

· Notebook leI嘉泰姆

· Mother Board leI嘉泰姆

· Table PC leI嘉泰姆

· Hand-Held Portable leI嘉泰姆

· AIO PC leI嘉泰姆

· Set-top boxes leI嘉泰姆

· LCD TVleI嘉泰姆

   技术规格书（产品PDF) 返回TOP leI嘉泰姆

     需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持！leI嘉泰姆

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产品封装图 返回TOPleI嘉泰姆

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电路原理图 返回TOPleI嘉泰姆

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