High-Performance PWM Controller CXMD3258 is a single-phase, constant-on-time, synchronous PWM controller, which drives N-channel MOSFETs. The CXMD3258 steps down high voltage to generate low-voltage

目录

 iH0嘉泰姆

iH0嘉泰姆

iH0嘉泰姆

iH0嘉泰姆

iH0嘉泰姆

  产品概述 返回TOPiH0嘉泰姆

The CXMD3258 is a single-phase, constant-on-time, synchronous PWM controller, which drives N-channel MOSFETs. The CXMD3258 steps down high voltage to generate low-voltage chipset or RAM supplies in notebook computers. The CXMD3258 provides excellent transient response and accurate DC voltage output in either PFM or PWM Mode. In Pulse Frequency Mode (PFM), the CXMD3258 provides very high efficiency over light to heavy loads with loading- modulated switching frequencies. In PWM Mode, the converter works nearly at constant frequency forlow-noise requirements. The CXMD3258 is equipped with accurate positive current- limit, output under-voltage, and output over-voltage protections, perfect for NB applications. The Power-OnReset function monitors the voltage on VCC to prevent wrong operation during power-on. The CXMD3258 has a 1ms digital soft-start and built-in an integrated output discharge method for soft-stop. An internal integrated soft-start ramps up the output voltage with programmable slew rate to reduce the start-up current. A soft-stop function actively discharges the output capacitors with controlled reverse inductor current. The CXMD3258 is available in 10pin TDFN 3x3 package.

   产品特点 返回TOPiH0嘉泰姆

iH0嘉泰姆

Adjustable Output Voltage from +0.7V to +5.5ViH0嘉泰姆

iH0嘉泰姆

0.7V Reference VoltageiH0嘉泰姆

±1% Accuracy Over-TemperatureiH0嘉泰姆

Operates from an Input Battery Voltage Range of +1.8V to +32ViH0嘉泰姆

Power-On-Reset Monitoring on VCC PiniH0嘉泰姆

Excellent Line and Load Transient ResponsesiH0嘉泰姆

PFM Mode for Increased Light Load EfficiencyiH0嘉泰姆

Selectable PWM Frequency from 4 Preset ValuesiH0嘉泰姆

Integrated MOSFET DriversiH0嘉泰姆

Integrated Bootstrap Forward P-CH MOSFETiH0嘉泰姆

Adjustable Integrated Soft-Start and Soft-StopiH0嘉泰姆

Selectable Forced PWM or Automatic PFM/PWM ModeiH0嘉泰姆

Power Good MonitoringiH0嘉泰姆

70% Under-Voltage ProtectioniH0嘉泰姆

125% Over-Voltage ProtectioniH0嘉泰姆

Adjustable Current-Limit ProtectioniH0嘉泰姆

Using Sense Low-Side MOSFET’s RDS(ON)iH0嘉泰姆

Over-Temperature ProtectioniH0嘉泰姆

Auto Rework from Protection ModeiH0嘉泰姆

TDFN-10 3x3 PackageiH0嘉泰姆

Lead Free and Green Devices Available (RoHS Compliant)iH0嘉泰姆

   应用范围 返回TOPiH0嘉泰姆

iH0嘉泰姆

NotebookiH0嘉泰姆

iH0嘉泰姆

Table PCiH0嘉泰姆

Hand-Held PortableiH0嘉泰姆

AIO PCiH0嘉泰姆

LCD Monitor / TViH0嘉泰姆

Battery ChargeriH0嘉泰姆

ADSL ModemiH0嘉泰姆

Telecom / Networking EquipmentiH0嘉泰姆

   技术规格书（产品PDF) 返回TOP iH0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</span>！</span>
iH0嘉泰姆

iH0嘉泰姆

iH0嘉泰姆

相关芯片选择指南 返回TOP                             更多同类产品......