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首页 > Products > Power Management > DC/DC Step-Down Converter > Buck Step-Down Converter >The CXSD6121 SwitchReg 1.5MHz constant fre-quency current mode PWM step-down converter supply up to 2A output load current from a 2.5V to 5.5V input voltage and the output voltage can be regulat
The CXSD6121 SwitchReg 1.5MHz constant fre-quency current mode PWM step-down converter supply up to 2A output load current from a 2.5V to 5.5V input voltage and the output voltage can be regulat

The CXSD6121 SwitchReg is a 1.5MHz constant fre-quency current mode PWM step-down
converter. It is ideal for portable equipment requiring very high current up to 2A from single-cell
Lithium-ion batteries while still achieving over 90% efficiency during peak load condi-tions.
The CXSD6121 also can run at 100% duty cycle for low dropout operation, extending
battery life in portable systems while light load operation provides very low output ripple
for noise sensitive applications.
The CXSD6121 can supply up to 2A output load current from a 2.5V to 5.5V input voltage
and the output voltage can be regulated as low as 0.6V. The high switching fre-quency minimizes
the size of external components while keeping switching losses low. The internal slope
compen-sation setting allows the device to operate with smaller inductor values to optimize
size and provide efficient operation.

The CXSD6121 SwitchReg 1.5MHz constant fre-quency current mode PWM step-down converter supply up to 2A output load current from a 2.5V to 5.5V input voltage and the output voltage can be regulat
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Product introduction

                          目录a1B嘉泰姆

   1.产品概述      2.产品特点      3.应用范围     4.技术规格书下载(PDF文档)a1B嘉泰姆

   5.产品封装      6.电路原理图     7.相关产品a1B嘉泰姆

一.产品概述a1B嘉泰姆


   The CXSD6121 SwitchReg is a 1.5MHz constant fre-quency current mode PWM step-down a1B嘉泰姆

converter. It is ideal for portable equipment requiring very high current up to 2A from single-cella1B嘉泰姆

 Lithium-ion batteries  while still achieving over 90% efficiency during peak load condi-tions. a1B嘉泰姆

The CXSD6121 also can run at 100%  duty cycle for low dropout operation, extendinga1B嘉泰姆

 battery life in portable systems while light load operation  provides very low output ripple a1B嘉泰姆

for noise sensitive applications.a1B嘉泰姆

         The CXSD6121 can supply up to 2A output load current from a 2.5V to 5.5V input voltagea1B嘉泰姆

 and the  output voltage can be regulated as low as 0.6V. The high switching fre-quency minimizesa1B嘉泰姆

 the size of external components while keeping switching losses low. The internal slope a1B嘉泰姆

compen-sation setting allows  the device to operate with smaller inductor values to optimizea1B嘉泰姆

 size and provide efficient operation.a1B嘉泰姆

      The CXSD6121 is available with adjustable (0.6V to VIN) output voltage.a1B嘉泰姆

二.产品特点a1B嘉泰姆


· Input Voltage Range: 2.5V to 5.5Va1B嘉泰姆

· Output Voltages from 0.6V to VINa1B嘉泰姆

· 2A Output Currenta1B嘉泰姆

· High Efficiency: Up to 96%a1B嘉泰姆

· 1.5MHz Constant Switching Frequencya1B嘉泰姆

· Low RDS(ON) Internal Switches: 0.13Ωa1B嘉泰姆

· Allows Use of Ceramic Capacitorsa1B嘉泰姆

· Current Mode Operation for Excellent Line and Load Transient Responsea1B嘉泰姆

· Short-Circuit and Thermal Fault Protectiona1B嘉泰姆

· Soft Starta1B嘉泰姆

· Low Dropout Operation: 100% Duty Cyclea1B嘉泰姆

· Low Shutdown Current: ISHUTDOWN < 1μAa1B嘉泰姆

· SOP8 Packagea1B嘉泰姆

· -40°C to +125°C Temperature Rangea1B嘉泰姆

三.应用范围a1B嘉泰姆


·Cellular Phonesa1B嘉泰姆

·Digital Camerasa1B嘉泰姆

·DSP Core Suppliesa1B嘉泰姆

·PDAsa1B嘉泰姆

·Portable Instrumentsa1B嘉泰姆

·Smart Phones    a1B嘉泰姆

四.技术规格书(产品PDF)a1B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a1B嘉泰姆

 QQ截图20160419174301.jpga1B嘉泰姆

五.产品封装图a1B嘉泰姆


 1-1511050RT4131.jpg a1B嘉泰姆

六.电路原理图a1B嘉泰姆


blob.png   a1B嘉泰姆

七.相关芯片选择指南a1B嘉泰姆


系列名称 输入电压 (V)   输出电压 (V)     最大输出电流 (mA) 特点
最小 最大 最小 标准 最大  
CXSD6118 2.5V 5.5V    可调     2000 PWM同步降压转换器:效率95%以上
CXSD6121 2.5V  5.5V   可调     2000 PWM同步降压转换器:效率95%以上
CXSD6119 2.5V 5.5V    可调   1000  PWM同步降压转换器:效率95%以上
CXSD6122 2.5V 5.5V     可调    800 PWM同步降压转换器:效率95%以上
CXSD6120 2.5V  5.5V 1.75    1.86   600 PWM同步降压转换器:效率95%以上
CXSD6115 2.5V  5.5V  1.75    1.86 600  PWM同步降压转换器:效率95%以上
CXSD6116 2.5V 5.5V    可调    600  PWM同步降压转换器:效率95%以上
CXSD6117 2.5V 5.5V    可调    600  PWM同步降压转换器:效率95%以上