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3MHz固定开关频率高频同步降压型DC变换器CXSD62270 PWM模式间平稳转换I2C兼容接口动态调节输出电压
发表时间：2020-05-13
浏览次数：332

目录

1.产品概述       2.产品特点     ufU嘉泰姆

3.应用范围       4.技术规格书下载（PDF文档）ufU嘉泰姆

5.产品封装       6.电路原理图  ufU嘉泰姆

7.相关产品ufU嘉泰姆

   产品概述 返回TOPufU嘉泰姆

      CXSD62270是一款应用于电池供电便携设备的高频同步降压型DC-DC变换器，支持高达5A负载电流，允许使用小型化电感与电容。CXSD62270特别适用于单节锂（离子）电池供电的诸如移动电话等便携设备应用。通过I2C兼容界面，输出电压可以在0.6V到1.4V调节。该芯片支持智能手机，便携电脑等低压DSP及处理器应用。CXSD62270工作在3MHz固定开关频率。轻负载时，芯片选择PFM模式工作用于提高效率。随着负载变化，芯片可在PFM和PWM模式间平稳转换。同步整流以及自动模式转换提高了全负载范围效率。串行接口兼容快速/标准和高速模式的I2C规格，允许速率高达3.4Mbps。通过这种通信接口，可以以6.25mV的步长动态调节输出电压，选择工作模式，使能/关断输出等。The CXSD62270 is a high-frequency, high-current synchronous step-down dc-dc converter optimized to supply the different sub systems of smart-phones, Tablets, and portable applications powered by one cell Li−Ion or three cell Alkaline/NiCd/NiMH batteries. The device is able to deliver up to 5A, with programmable output voltage from 0.6 V to 1.4V. The CXSD62270 operates at 3-MHz fixed switching frequency which allows the use of small low cost inductors and capacitors. During light load conditions, the regulator includes a PFM mode to enhance light-load efficiency. The regulator transitions smoothly between PWM and PFM modes. Synchronous rectification and automatic PWM/PFM transitions improve overall efficiency. The serial interface is compatible with Fast/Standard and High-Speed mode I2C specification allowing transfers at up to 3.4 Mbps. This communication interface is used for dynamic voltage scaling with voltage steps down to 6.25 mV, for reprogramming the mode of operation (PFM or Forced PWM) or disable/enabling the output voltage.

   产品特点 返回TOPufU嘉泰姆

• 高效率ufU嘉泰姆

• 3MHz固定开关频率ufU嘉泰姆

• 5A负载电流ufU嘉泰姆

• 支持I2C兼容接口动态调节输出电压ufU嘉泰姆

• 2.7V to 5.5V 输入电压范围ufU嘉泰姆

• 6.25mV步长可调输出电压：0.6V to 1.4VufU嘉泰姆

• 出色的负载和电源瞬态响应ufU嘉泰姆

• 短路保护和过温保护ufU嘉泰姆

• 小尺寸0.47uH电感ufU嘉泰姆

• 高效、低纹波、轻负载PFMufU嘉泰姆

• PWM、PFM平稳转换ufU嘉泰姆

• 2.0mm x 1.6mm WCSP-20封装ufU嘉泰姆

• 符合RoHS规范、Lead(Pb)-Free、Halogen-FreeufU嘉泰姆

 2.7V to 5.5V Input Voltage RangeufU嘉泰姆

 3MHz Constant Switching FrequencyufU嘉泰姆

 5A Available Load CurrentufU嘉泰姆

 I2C Control Interface with Dynamic VoltageufU嘉泰姆

Scaling SupportufU嘉泰姆

 Programmable Output Voltage: 0.6V to 1.4V inufU嘉泰姆

6.25mV StepsufU嘉泰姆

 Small size, 0.47μH Inductor SolutionufU嘉泰姆

 52μA Typical Quiescent CurrentufU嘉泰姆

 PFM/PWM Operation for Optimum IncreasedufU嘉泰姆

EfficiencyufU嘉泰姆

 Excellent Load and Line Transient ResponseufU嘉泰姆

 Short Circuit and Thermal ProtectionufU嘉泰姆

 Available in 2.0mm×1.6mm WCSP-20 PackageufU嘉泰姆

 RoHS Compliant and 100% Lead(Pb)-FreeufU嘉泰姆

Halogen-FreeufU嘉泰姆

   应用范围 返回TOPufU嘉泰姆

 ufU嘉泰姆

• PDA, 掌上电脑ufU嘉泰姆

• 智能手机ufU嘉泰姆

• 采用SmartReflex技术电源ufU嘉泰姆

• DSP，μP OMAP，XscaleufU嘉泰姆

• DC-DC模块插件ufU嘉泰姆

 Smart PhonesufU嘉泰姆

 TabletsufU嘉泰姆

 Low-Voltage DSPs and Processors Core PowerufU嘉泰姆

SuppliesufU嘉泰姆

   技术规格书（产品PDF) 返回TOP ufU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！ufU嘉泰姆

 QQ截图20160419174301.jpgufU嘉泰姆

产品封装图 返回TOPufU嘉泰姆

aufU嘉泰姆

电路原理图 返回TOPufU嘉泰姆

 ufU嘉泰姆

 ufU嘉泰姆

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 ufU嘉泰姆

DC/DC开关稳压器 > 降压转换器/控制器ufU嘉泰姆

Part   ufU嘉泰姆

NumberufU嘉泰姆

remarkufU嘉泰姆

Iout ufU嘉泰姆

(mA)ufU嘉泰姆

Vin ufU嘉泰姆

(V)ufU嘉泰姆

Vout ufU嘉泰姆

(V)ufU嘉泰姆

IQ ufU嘉泰姆

(μA)ufU嘉泰姆

FB ufU嘉泰姆

(V)ufU嘉泰姆

Freq. ufU嘉泰姆

(KHz)ufU嘉泰姆

Peak ufU嘉泰姆

Efficency ufU嘉泰姆

(%)ufU嘉泰姆

PackageufU嘉泰姆

CXSD62255ufU嘉泰姆

6A, 30V, Synchronous Step-Down Converter with Programmable FrequencyufU嘉泰姆

6000ufU嘉泰姆

2.7~30ufU嘉泰姆

0.8~20ufU嘉泰姆

1000ufU嘉泰姆

0.8ufU嘉泰姆

100~1000ufU嘉泰姆

>95ufU嘉泰姆

TQFN-23LufU嘉泰姆

CXSD62256ufU嘉泰姆

2A, 30V, 340KHz Synchronous Step-Down ConverterufU嘉泰姆

2000ufU嘉泰姆

4.5~30ufU嘉泰姆

0.92~20ufU嘉泰姆

1000ufU嘉泰姆

0.92ufU嘉泰姆

340ufU嘉泰姆

>94ufU嘉泰姆

SOP-8ufU嘉泰姆

CXSD62257ufU嘉泰姆

3A, 30V, 340KHz Synchronous Step-Down ConverterufU嘉泰姆

3000ufU嘉泰姆

4.5~30ufU嘉泰姆

0.92~20ufU嘉泰姆

1000ufU嘉泰姆

0.92ufU嘉泰姆

340ufU嘉泰姆

>94ufU嘉泰姆

SOP-8(EP)ufU嘉泰姆

CXSD62258ufU嘉泰姆

CC/CV Mode Synchronous Step-Down ConverterufU嘉泰姆

4000ufU嘉泰姆

8~36ufU嘉泰姆

0.6~12ufU嘉泰姆

1000ufU嘉泰姆

0.6ufU嘉泰姆

80~800ufU嘉泰姆

>95ufU嘉泰姆

SOP-8(EP)ufU嘉泰姆

CXSD62259ufU嘉泰姆

Dual-Channel CC/CV Mode Synchronous Step-Down ControllerufU嘉泰姆

5000ufU嘉泰姆

8~36ufU嘉泰姆

0.6~12ufU嘉泰姆

1000ufU嘉泰姆

0.6ufU嘉泰姆

150ufU嘉泰姆

>95ufU嘉泰姆

MSOP-10ufU嘉泰姆

CXSD62260ufU嘉泰姆

CC/CV Mode Synchronous Step-Down ConverterufU嘉泰姆

4000ufU嘉泰姆

4.5~36ufU嘉泰姆

0.6~20ufU嘉泰姆

1000ufU嘉泰姆

0.6ufU嘉泰姆

80~800ufU嘉泰姆

>95ufU嘉泰姆

SOP-8(EP)ufU嘉泰姆

CXSD62261ufU嘉泰姆

CC/CV Mode Synchronous Step-Down ConverterufU嘉泰姆

4000ufU嘉泰姆

4.5~30ufU嘉泰姆

0.6~12ufU嘉泰姆

1000ufU嘉泰姆

0.6ufU嘉泰姆

80~800ufU嘉泰姆

>95ufU嘉泰姆

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Dual-Channel CC/CV Mode Synchronous Step-Down ConverterufU嘉泰姆

5000ufU嘉泰姆

8~36ufU嘉泰姆

0.6~12ufU嘉泰姆

1000ufU嘉泰姆

0.6ufU嘉泰姆

80~800ufU嘉泰姆

95ufU嘉泰姆

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5000ufU嘉泰姆

8~36ufU嘉泰姆

1.18~12ufU嘉泰姆

500ufU嘉泰姆

1.18ufU嘉泰姆

120ufU嘉泰姆

>95ufU嘉泰姆

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CXSD62264ufU嘉泰姆

CC/CV Mode Step-Down ConverterufU嘉泰姆

3000ufU嘉泰姆

8~36ufU嘉泰姆

1.18~12ufU嘉泰姆

500ufU嘉泰姆

1.18ufU嘉泰姆

120ufU嘉泰姆

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3000ufU嘉泰姆

4.75~40ufU嘉泰姆

0.92~15ufU嘉泰姆

550ufU嘉泰姆

0.92ufU嘉泰姆

200ufU嘉泰姆

>95ufU嘉泰姆

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800ufU嘉泰姆

2.5 ~ 5.5ufU嘉泰姆

0.6~VinufU嘉泰姆

270ufU嘉泰姆

0.6ufU嘉泰姆

1500ufU嘉泰姆

> 96ufU嘉泰姆

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3000ufU嘉泰姆

2.7~5.5ufU嘉泰姆

0.6~5ufU嘉泰姆

500ufU嘉泰姆

0.6ufU嘉泰姆

1000ufU嘉泰姆

>96ufU嘉泰姆

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1000ufU嘉泰姆

2.7~5.5ufU嘉泰姆

0.6~3.3ufU嘉泰姆

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2250ufU嘉泰姆

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0.6~1.4ufU嘉泰姆

52ufU嘉泰姆

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3000ufU嘉泰姆

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1000ufU嘉泰姆

2.7 ~ 5.5ufU嘉泰姆

0.6~VinufU嘉泰姆

30ufU嘉泰姆

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1000 /1000ufU嘉泰姆

2.5 ~ 5.5ufU嘉泰姆

0.6~5ufU嘉泰姆

270ufU嘉泰姆

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1500ufU嘉泰姆

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1000/1000ufU嘉泰姆

2.7 ~ 5.5ufU嘉泰姆

0.6~VinufU嘉泰姆

45ufU嘉泰姆

0.6ufU嘉泰姆

2250ufU嘉泰姆

> 95ufU嘉泰姆

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1000/1000ufU嘉泰姆

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0.6~VinufU嘉泰姆

30ufU嘉泰姆

0.6ufU嘉泰姆

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1200ufU嘉泰姆

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1200ufU嘉泰姆

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200ufU嘉泰姆

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500ufU嘉泰姆

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1000ufU嘉泰姆

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2000ufU嘉泰姆

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340ufU嘉泰姆

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450ufU嘉泰姆

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500ufU嘉泰姆

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1100ufU嘉泰姆

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3000ufU嘉泰姆

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3000ufU嘉泰姆

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450ufU嘉泰姆

0.925ufU嘉泰姆

340ufU嘉泰姆

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3A, 30V, 340KHz Synchronous Step-Down ConverterufU嘉泰姆

3000ufU嘉泰姆

4.5~30ufU嘉泰姆

0.923~20ufU嘉泰姆

450ufU嘉泰姆

0.925ufU嘉泰姆

340ufU嘉泰姆

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