High-Performance PWM Controller CXMD3260 is a single‐phase, constant‐on‐time, synchron‐ ous PWM controller, which drives N‐channel MOSFETs. The CXMD3260 steps down high voltage to generate low voltag

   产品概述 返回TOPzdA嘉泰姆

The CXMD3260 is a single‐phase, constant‐on‐time, synchron‐  ous PWM controller, which drives N‐channel MOSFETs. The CXMD3260 steps down high voltage to generate low voltage chipset or RAM suppliesin notebook computers. The CXMD3260 provides excellent transient response and accurate DC voltage output in either PFM or PWM Mode. In Pulse Frequency Mode (PFM), the CXMD3260 provides very high efficiency over light to heavy loads with loading‐ modulated switching frequencies. In PWM Mode, the converter works nearly at constant frequency for low‐noise requirements. The CXMD3260 is equipped with accurate positive current‐ limit, output under‐voltage, and output over‐voltage prote‐  ctions, perfect for NB applications. The Power‐On‐  Reset function monitors the voltage on VCC to prevent wrong operation during power‐on. The CXMD3260 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 CXMD3260 is available in 10pin TDFN 3x3 package.

   产品特点 返回TOPzdA嘉泰姆

 Easy pass EMI test zdA嘉泰姆

 Adjustable Output Voltage from +0.7V to +5.5V 0.7V Reference Voltage ±1% Accuracy Over‐Temperature zdA嘉泰姆

 Operates from an Input Battery Voltage Range of +1.8V to +36V zdA嘉泰姆

 Power‐On‐Reset Monitoring on VCC Pin zdA嘉泰姆

 Excellent Line and Load Transient Responses zdA嘉泰姆

 PFM Mode for Increased Light Load Efficiency zdA嘉泰姆

 Selectable PWM Frequency from 4 Preset Values zdA嘉泰姆

 Integrated MOSFET Drivers zdA嘉泰姆

 Integrated Bootstrap Forward P‐CH MOSFET zdA嘉泰姆

 Adjustable Integrated Soft‐Start and Soft‐Stop zdA嘉泰姆

 Selectable Forced PWM or Automatic PFM/PWM Mode zdA嘉泰姆

 Power Good Monitoring zdA嘉泰姆

 70% Under‐Voltage Protection zdA嘉泰姆

 125% Over‐Voltage Protection zdA嘉泰姆

 Using Sense Low‐Side MOSFET’s RDS(ON) adjustable Current‐Limit Protection zdA嘉泰姆

 Over‐Temperature Protection zdA嘉泰姆

 Auto Rework from Protection Mode zdA嘉泰姆

 TDFN‐10 3x3 Package zdA嘉泰姆

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

   应用范围 返回TOPzdA嘉泰姆

 Notebook zdA嘉泰姆

 Table PC zdA嘉泰姆

 Hand‐Held Portable zdA嘉泰姆

 AIO PC zdA嘉泰姆

 LCD Monitor / TV zdA嘉泰姆

 Battery Charger zdA嘉泰姆

 ADSL Modem zdA嘉泰姆

 Telecom / Networking EquipmentzdA嘉泰姆

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