CXMD3256

CXMD3256是一种电压模式,固定200kHz/300kHz/600kHz开关频率,同步降压转换器。CXSD6296允许宽输入电压,可以是单个5~12伏或两个电源电压,适用于各种应用。上电复位(POR)电路监测VCC电源电压,以防止错误的逻辑控制。在软启动电路中,它既能防止输出电压过冲,又能限制输入电流。为满足低输出电压应用的要求,设计了一种高精度的0.6V/0.8V温度补偿参考电压。CXSD6296针对负载电流变化提供了卓越的输出电压调节。控制器的过电流保护通过使用低边MOSFET的RDS(ON)上的电压降来监测输出电流,从而消除了对电流传感电阻的需求,该电阻具有高效率和低成本的特点。此外,CXMD3256还集成了excel-lent保护功能。过电压保护(OVP)、欠电压保护(UVP)。监视FB电压以防止PWM输出过电压的OVP电路和监视FB电压以防止PWM输出过电压或短路的UVP电路。CXMD3256在SOP-8P中提供

宽5V至12V电源电压
VCC上电复位监控
良好的输出电压调节
CXMD3256/A/D的0.6V内部参考电压
CXMD3256B/C的0.8V内部参考电压
超过温度范围±0.6%
集成软启动
带外部补偿的电压模式PWM操作
高达90%DutyRatio,快速瞬态响应
恒定开关频率
CXMD3256/B为300kHz±10%
CXMD3256C为200kHz±10%
CXMD3256A/D为600kHz±10%
集成自举正激P-CH MOSFET
50%欠压保护
125%过电压保护
可调过流保护阈值
使用低边MOSFET的RDS(ON)
关闭控制byCOMP
SOP-8P包
提供无铅和绿色设备

CXMD3256电压模式固定200kHz 300kHz 600kHz开关频率同步降压转换器单个5~12伏或两个电源电压上电复位POR电路监测VCC电源电压防止错误的逻辑控制带外部补偿的电压模式PWM操作

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产品简介

目录

1.产品概述       2.产品特点     Hpt嘉泰姆

3.应用范围       4.技术规格书下载(PDF文档)Hpt嘉泰姆

5.产品封装       6.电路原理图  Hpt嘉泰姆

7.相关产品Hpt嘉泰姆

 Hpt嘉泰姆

产品概述 返回TOPHpt嘉泰姆


The CXMD3256 is a voltage mode, fixed 200kHz/300kHz/600kHz switching frequency,synchronous buck converter. The CXSD6296 allows wide input voltage that is either a single 5~1 2V or two supply voltage(s) for various applications. A power-on-reset (POR) circuit monitors the VCC supply voltage to prevent wrong logic controls. Abuilt- in soft-start circuit prevents the output voltages from over- shoot as well as limits the input current. An internal 0.6V/0.8V Temperature-compensated reference voltage with high accuracy is designed to meet the requirement of low out- put voltage applications. The CXSD6296 provides excel- lent output voltage regulations against load current variation. The controller’s over-current protection monitors the out- put current by using the voltage drop across the RDS (ON) of low-side MOSFET, eliminating the need for a cur- rent sensing resistor that features high efficiency and low cost. In addition, the CXMD3256 also integrates excel- lent protection functions. The over-voltage protection (OVP), under-voltage protection (UVP). OVP circuit which monitors the FB voltage to prevent the PWM output from over voltage, and UVP circuit which monitors the FB voltage to prevent the PWM output from under voltage or short circuit.The CXMD3256 is available in SOP-8P packages

   产品特点 返回TOPHpt嘉泰姆


Wide 5V to 12V Supply VoltageHpt嘉泰姆

Power-On-Reset Monitoring on VCCHpt嘉泰姆

Excellent Output Voltage RegulationsHpt嘉泰姆

0.6V Internal Reference for CXMD3256/A/DHpt嘉泰姆

0.8V Internal Reference for CXMD3256B/CHpt嘉泰姆

±0.6% Over-Temperature RangeHpt嘉泰姆

Integrated Soft-StartHpt嘉泰姆

Voltage Mode PWM Operation with External CompensationHpt嘉泰姆

Up to 90%DutyRatio for Fast Transient ResponseHpt嘉泰姆

Constant Switching FrequencyHpt嘉泰姆

300kHz ±10% for CXMD3256/BHpt嘉泰姆

200kHz ±10% for CXMD3256CHpt嘉泰姆

600kHz ±10% for CXMD3256A/DHpt嘉泰姆

Integrated Bootstrap Forward P-CH MOSFETHpt嘉泰姆

50%Under-Voltage ProtectionHpt嘉泰姆

125%Over-Voltage ProtectionHpt嘉泰姆

Adjustable Over-Current Protection ThresholdHpt嘉泰姆

Using the RDS(ON) of Low-Side MOSFETHpt嘉泰姆

Shutdown Control byCOMPHpt嘉泰姆

SOP-8P PackageHpt嘉泰姆

Lead Free and Green Devices AvailableHpt嘉泰姆

   应用范围 返回TOPHpt嘉泰姆


Graphic CardsHpt嘉泰姆

DSL, Switch HUBHpt嘉泰姆

Wireless LanHpt嘉泰姆

Notebook ComputerHpt嘉泰姆

Mother BoardHpt嘉泰姆

    LCD Monitor/TVHpt嘉泰姆

   技术规格书(产品PDF) 返回TOP Hpt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!Hpt嘉泰姆

 QQ截图20160419174301.jpgHpt嘉泰姆

产品封装图 返回TOPHpt嘉泰姆


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电路原理图 返回TOPHpt嘉泰姆


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PWM Controller(脉宽调制控制器)Hpt嘉泰姆

Part No.Hpt嘉泰姆

Input VoltageHpt嘉泰姆

Output Hpt嘉泰姆

VoltageHpt嘉泰姆

FrequencyHpt嘉泰姆

EfficiencyHpt嘉泰姆

PackageHpt嘉泰姆

precisionHpt嘉泰姆

OverHpt嘉泰姆

OverHpt嘉泰姆

Short Hpt嘉泰姆

ProtectionHpt嘉泰姆

CurrentHpt嘉泰姆

TemperatureHpt嘉泰姆

ProtectionHpt嘉泰姆

ProtectionHpt嘉泰姆

CXMD3255Hpt嘉泰姆

16VHpt嘉泰姆

ADJHpt嘉泰姆

300KHZHpt嘉泰姆

93%Hpt嘉泰姆

SOP8/DFN3*3-10DFN3*3-10Hpt嘉泰姆

2%Hpt嘉泰姆

YHpt嘉泰姆

YHpt嘉泰姆

YHpt嘉泰姆

CXMD3256Hpt嘉泰姆

16VHpt嘉泰姆

ADJHpt嘉泰姆

200KHz/300KHZHpt嘉泰姆

/600KHzHpt嘉泰姆

93%Hpt嘉泰姆

SOP8Hpt嘉泰姆

DFN3*3-10Hpt嘉泰姆

2%Hpt嘉泰姆

YHpt嘉泰姆

YHpt嘉泰姆

YHpt嘉泰姆

CXMD3257Hpt嘉泰姆

35VHpt嘉泰姆

ADJHpt嘉泰姆

290-430KHzHpt嘉泰姆

93%Hpt嘉泰姆

DFN3*3-10Hpt嘉泰姆

2%Hpt嘉泰姆

YHpt嘉泰姆

YHpt嘉泰姆

YHpt嘉泰姆

CXMD3258Hpt嘉泰姆

35VHpt嘉泰姆

ADJHpt嘉泰姆

290-430KHzHpt嘉泰姆

93%Hpt嘉泰姆

DFN3*3-10Hpt嘉泰姆

2%Hpt嘉泰姆

YHpt嘉泰姆

YHpt嘉泰姆

YHpt嘉泰姆

CXMD3259Hpt嘉泰姆

35VHpt嘉泰姆

ADJHpt嘉泰姆

135-215KHzHpt嘉泰姆

93%Hpt嘉泰姆

DFN3*3-10Hpt嘉泰姆

2%Hpt嘉泰姆

YHpt嘉泰姆

YHpt嘉泰姆

YHpt嘉泰姆

CXMD3260Hpt嘉泰姆

35VHpt嘉泰姆

ADJHpt嘉泰姆

135-215KHzHpt嘉泰姆

93%Hpt嘉泰姆

DFN3*3-10Hpt嘉泰姆

2%Hpt嘉泰姆

YHpt嘉泰姆

YHpt嘉泰姆

YHpt嘉泰姆

CXMD3261Hpt嘉泰姆

40VHpt嘉泰姆

-Hpt嘉泰姆

100-300KHzHpt嘉泰姆

 -Hpt嘉泰姆

QFN20Hpt嘉泰姆

 

YHpt嘉泰姆

Hpt嘉泰姆

YHpt嘉泰姆

◀ 上一篇:CXMD3255电压模式固定300kHz开关频率同步降压转换器宽输入电压5~12V上电复位POR电路监测VCC电源电压防止错误的逻辑控制外部补偿的l电压模式PWM控制

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下一篇▶:CXMD3257单相恒定时间同步的脉宽调制控制器驱动N通道mosfet逐步降低高压在笔记本电脑中生成低压芯片组或RAM电源功率因数调制或脉宽调制模式下提供出色的瞬态响应和精确的直流电压输出