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首页 > 产品中心 > MCU存储ADC时钟数据线 > 脉宽调制控制器 >CXMD3260逐步降低高压在笔记本电脑中生成低压芯片组或RAM精确正电流限制输出欠压和输出过压保护通电复位功能监控VCC上的电压防止通电期间出现错误操作可调软启动和软停止集成
CXMD3260逐步降低高压在笔记本电脑中生成低压芯片组或RAM精确正电流限制输出欠压和输出过压保护通电复位功能监控VCC上的电压防止通电期间出现错误操作可调软启动和软停止集成
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CXMD3260是一个单相、恒定时间、同步的脉宽调制控制器,驱动N通道mosfet。CXMD3260逐步降低高压,以在笔记本电脑中生成低压芯片组或RAM。CXMD3260在PFM或PWM模式下提供了出色的瞬态响应和精确的直流电压输出。在脉冲频率模式(PFM)中,CXMD3260在负载调制开关频率的轻到重负载上提供非常高的效率。在PWM模式下,为了达到低噪声的要求,变换器几乎以恒定频率工作。CXMD3260配备了精确的正电流限制、输出欠压和输出过压保护,非常适合NB应用。通电复位功能监控VCC上的电压,以防止通电期间出现错误操作。CXMD3260具有1毫秒数字软启动和内置的软停止综合输出放电方法。内部集成的软启动以可编程的转换率提高输出电压,以降低启动电流。软停止功能利用受控的反向电感电流对输出电容器进行主动放电。CXMD3260提供10针TDFN 3x3产品包。

电磁干扰测试容易通过
从+0.7V到+5.5V的可调输出电压0.7V参考电压±1%的精度超温
在+1.8V至+36V的输入电池电压范围内运行
•VCC引脚上的通电复位监控
优良的线路和负载瞬态响应
提高轻载效率的PFM模式
从4个预设值中选择脉宽调制频率
集成MOSFET驱动器
集成自举正向P-CH MOSFET
可调软启动和软停止集成
可选的强制脉冲宽度调制或自动脉冲频率调制/脉冲宽度调制模式
电力良好监测
70%欠压保护
•125%过电压保护
使用Sense低侧MOSFET的RDS(ON)可调限流保护
过温保护
从保护模式自动返工
•TDFN‐10 3x3包
提供无铅和绿色设备(符合RoHS)

CXMD3260逐步降低高压在笔记本电脑中生成低压芯片组或RAM精确正电流限制输出欠压和输出过压保护通电复位功能监控VCC上的电压防止通电期间出现错误操作可调软启动和软停止集成
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目录

1.产品概述       2.产品特点     d8J嘉泰姆

3.应用范围       4.技术规格书下载(PDF文档)d8J嘉泰姆

5.产品封装       6.电路原理图  d8J嘉泰姆

7.相关产品d8J嘉泰姆

   产品概述 返回TOPd8J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TOPd8J嘉泰姆


 Easy pass EMI test d8J嘉泰姆

 Adjustable Output Voltage from +0.7V to +5.5V 0.7V Reference Voltage ±1% Accuracy Over‐Temperature d8J嘉泰姆

 Operates from an Input Battery Voltage Range of +1.8V to +36V d8J嘉泰姆

 Power‐On‐Reset Monitoring on VCC Pin d8J嘉泰姆

 Excellent Line and Load Transient Responses d8J嘉泰姆

 PFM Mode for Increased Light Load Efficiency d8J嘉泰姆

 Selectable PWM Frequency from 4 Preset Values d8J嘉泰姆

 Integrated MOSFET Drivers d8J嘉泰姆

 Integrated Bootstrap Forward P‐CH MOSFET d8J嘉泰姆

 Adjustable Integrated Soft‐Start and Soft‐Stop d8J嘉泰姆

 Selectable Forced PWM or Automatic PFM/PWM Mode d8J嘉泰姆

 Power Good Monitoring d8J嘉泰姆

 70% Under‐Voltage Protection d8J嘉泰姆

 125% Over‐Voltage Protection d8J嘉泰姆

 Using Sense Low‐Side MOSFET’s RDS(ON) adjustable Current‐Limit Protection d8J嘉泰姆

 Over‐Temperature Protection d8J嘉泰姆

 Auto Rework from Protection Mode d8J嘉泰姆

 TDFN‐10 3x3 Package d8J嘉泰姆

 Lead Free and Green Devices Available (RoHS Compliant)d8J嘉泰姆

   应用范围 返回TOPd8J嘉泰姆


 Notebook d8J嘉泰姆

 Table PC d8J嘉泰姆

 Hand‐Held Portable d8J嘉泰姆

 AIO PC d8J嘉泰姆

 LCD Monitor / TV d8J嘉泰姆

 Battery Charger d8J嘉泰姆

 ADSL Modem d8J嘉泰姆

 Telecom / Networking Equipmentd8J嘉泰姆

   技术规格书(产品PDF) 返回TOP d8J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!d8J嘉泰姆

 QQ截图20160419174301.jpgd8J嘉泰姆

产品封装图 返回TOPd8J嘉泰姆


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电路原理图 返回TOPd8J嘉泰姆


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PWM Controller(脉宽调制控制器)d8J嘉泰姆

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Input d8J嘉泰姆

Voltaged8J嘉泰姆

Output d8J嘉泰姆

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Frequencyd8J嘉泰姆

Efficiencyd8J嘉泰姆

Packaged8J嘉泰姆

precisiond8J嘉泰姆

Overd8J嘉泰姆

Overd8J嘉泰姆

Short d8J嘉泰姆

Protectiond8J嘉泰姆

Currentd8J嘉泰姆

Temperatured8J嘉泰姆

Protectiond8J嘉泰姆

Protectiond8J嘉泰姆

CXMD3255d8J嘉泰姆

16Vd8J嘉泰姆

ADJd8J嘉泰姆

300KHZd8J嘉泰姆

93%d8J嘉泰姆

SOP8/DFN3*3-10DFN3*3-10d8J嘉泰姆

2%d8J嘉泰姆

Yd8J嘉泰姆

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CXMD3256d8J嘉泰姆

16Vd8J嘉泰姆

ADJd8J嘉泰姆

200KHz/300KHZd8J嘉泰姆

/600KHzd8J嘉泰姆

93%d8J嘉泰姆

SOP8/d8J嘉泰姆

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2%d8J嘉泰姆

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CXMD3257d8J嘉泰姆

35Vd8J嘉泰姆

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290-430KHzd8J嘉泰姆

93%d8J嘉泰姆

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CXMD3258d8J嘉泰姆

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CXMD3259d8J嘉泰姆

35Vd8J嘉泰姆

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135-215KHzd8J嘉泰姆

93%d8J嘉泰姆

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2%d8J嘉泰姆

Yd8J嘉泰姆

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CXMD3260d8J嘉泰姆

35Vd8J嘉泰姆

ADJd8J嘉泰姆

135-215KHzd8J嘉泰姆

93%d8J嘉泰姆

DFN3*3-10d8J嘉泰姆

2%d8J嘉泰姆

Yd8J嘉泰姆

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CXMD3261d8J嘉泰姆

40Vd8J嘉泰姆

-d8J嘉泰姆

100-300KHzd8J嘉泰姆

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QFN20d8J嘉泰姆

 

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