目录

1.产品概述       2.产品特点     sqr嘉泰姆

3.应用范围       4.技术规格书下载（PDF文档）sqr嘉泰姆

5.产品封装       6.电路原理图  sqr嘉泰姆

7.相关产品sqr嘉泰姆

   产品概述 返回TOPsqr嘉泰姆

The CXMD3255 is a voltage mode, fixed 300kHz switching frequency, synchronous buck converter. The CXMD3255 allows wide input voltage that is either a single 5~12V or two supply voltage(s) for various applications. A power-on-reset (POR) circuit monitors the VCC supply voltage to prevent wrong logic controls. A builtin soft-start circuit prevents the output voltages from overshoot as well as limits the input current. An internal 0.8V temperature-compensated reference voltage with high accuracy is designed to meet the requirement of low output voltage applications. The CXMD3255 provides excellent output voltage regulations against load current variation. The controller’s over-current protection monitors the output current by using the voltage drop across the RDS(ON) of low-side MOSFET, eliminating the need for a current sensing resistor that features high efficiency and low cost. In addition, the CXMD3255 also integrates excellent protection functions: The over-voltage protection (OVP) , under- voltage protection (UVP). OVP circuit which monitors the FB voltage to prevent the PWM output from overvoltage,and UVP circuit which monitors the FB voltage to prevent the PWM output from under-voltage or short-circuit.The CXMD3255is available in SOP-8P and TDFN3x3-10 packages.

   产品特点 返回TOPsqr嘉泰姆

l  Wide 5V to 16V Supply Voltagesqr嘉泰姆

l  Power-On-Reset Monitoring on VCCsqr嘉泰姆

l  Excellent Output Voltage Regulations 0.8Vsqr嘉泰姆

   Internal Reference ±1% Over-Temperature Rangesqr嘉泰姆

l  Integrated Soft-Startsqr嘉泰姆

l  Voltage Mode PWM Operation with External Compensationsqr嘉泰姆

l  Up to 90% Duty Ratio for Fast Transient Responsesqr嘉泰姆

l  Constant Switching Frequency 300kHz ±10%sqr嘉泰姆

l  Drive Dual Low Cost N-MOSFETs with Adaptive Dead-Time Controlsqr嘉泰姆

l  50% Under-Voltage Protectionsqr嘉泰姆

l  125% Over-Voltage Protectionsqr嘉泰姆

l  Adjustable Over-Current Protection Threshold Using the RDS(ON) of Low-Side MOSFETsqr嘉泰姆

l  Shutdown Control by COMPsqr嘉泰姆

l  Power Good Monitoring (TDFN-10 3mmx3mm Package Only)sqr嘉泰姆

l  SOP-8P and TDFN3x3-10 Packagessqr嘉泰姆

l  Lead Free and Green Devices Available (RoHS Compliantsqr嘉泰姆

   应用范围 返回TOPsqr嘉泰姆

 Graphic Cards sqr嘉泰姆

 DSL, Switch HUB sqr嘉泰姆

 Wireless Lan sqr嘉泰姆

 Notebook Computer sqr嘉泰姆

 Mother Board sqr嘉泰姆

 LCD Monitor/TVsqr嘉泰姆

   技术规格书（产品PDF) 返回TOP sqr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！sqr嘉泰姆

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产品封装图 返回TOPsqr嘉泰姆

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电路原理图 返回TOPsqr嘉泰姆

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