目录

1.产品概述       2.产品特点     21x嘉泰姆

3.应用范围       4.技术规格书下载（PDF文档）21x嘉泰姆

5.产品封装       6.电路原理图  21x嘉泰姆

7.相关产品21x嘉泰姆

   产品概述 返回TOP21x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TOP21x嘉泰姆

Adjustable Output Voltage from +0.7V to +5.5V21x嘉泰姆

0.7V Reference Voltage21x嘉泰姆

±1% Accuracy Over-Temperature21x嘉泰姆

Operates from an Input Battery Voltage Range of +1.8V to +32V21x嘉泰姆

Power-On-Reset Monitoring on VCC Pin21x嘉泰姆

Excellent Line and Load Transient Responses21x嘉泰姆

PFM Mode for Increased Light Load Efficiency21x嘉泰姆

Selectable PWM Frequency from 4 Preset Values21x嘉泰姆

Integrated MOSFET Drivers21x嘉泰姆

Integrated Bootstrap Forward P-CH MOSFET21x嘉泰姆

Adjustable Integrated Soft-Start and Soft-Stop21x嘉泰姆

Selectable Forced PWM or Automatic PFM/PWM Mode21x嘉泰姆

Power Good Monitoring21x嘉泰姆

70% Under-Voltage Protection21x嘉泰姆

125% Over-Voltage Protection21x嘉泰姆

Adjustable Current-Limit Protection21x嘉泰姆

Using Sense Low-Side MOSFET’s RDS(ON)21x嘉泰姆

Over-Temperature Protection21x嘉泰姆

Auto Rework from Protection Mode21x嘉泰姆

TDFN-10 3x3 Package21x嘉泰姆

Lead Free and Green Devices Available (RoHS Compliant)21x嘉泰姆

   应用范围 返回TOP21x嘉泰姆

Notebook21x嘉泰姆

Table PC21x嘉泰姆

Hand-Held Portable21x嘉泰姆

AIO PC21x嘉泰姆

LCD Monitor / TV21x嘉泰姆

Battery Charger21x嘉泰姆

ADSL Modem21x嘉泰姆

Telecom / Networking Equipment21x嘉泰姆

   技术规格书（产品PDF) 返回TOP 21x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！21x嘉泰姆

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产品封装图 返回TOP21x嘉泰姆

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电路原理图 返回TOP21x嘉泰姆

21x嘉泰姆

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