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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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                          目录jKR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)jKR嘉泰姆

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

一.产品概述jKR嘉泰姆


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

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

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

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

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

for noise sensitive applications.jKR嘉泰姆

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

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

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

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

 size and provide efficient operation.jKR嘉泰姆

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

二.产品特点jKR嘉泰姆


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

· Output Voltages from 0.6V to VINjKR嘉泰姆

· 2A Output CurrentjKR嘉泰姆

· High Efficiency: Up to 96%jKR嘉泰姆

· 1.5MHz Constant Switching FrequencyjKR嘉泰姆

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

· Allows Use of Ceramic CapacitorsjKR嘉泰姆

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

· Short-Circuit and Thermal Fault ProtectionjKR嘉泰姆

· Soft StartjKR嘉泰姆

· Low Dropout Operation: 100% Duty CyclejKR嘉泰姆

· Low Shutdown Current: ISHUTDOWN < 1μAjKR嘉泰姆

· SOP8 PackagejKR嘉泰姆

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

三.应用范围jKR嘉泰姆


·Cellular PhonesjKR嘉泰姆

·Digital CamerasjKR嘉泰姆

·DSP Core SuppliesjKR嘉泰姆

·PDAsjKR嘉泰姆

·Portable InstrumentsjKR嘉泰姆

·Smart Phones    jKR嘉泰姆

四.技术规格书(产品PDF)jKR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jKR嘉泰姆

 QQ截图20160419174301.jpgjKR嘉泰姆

五.产品封装图jKR嘉泰姆


 1-1511050RT4131.jpg jKR嘉泰姆

六.电路原理图jKR嘉泰姆


blob.png   jKR嘉泰姆

七.相关芯片选择指南jKR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