CXSD6271高效同步降压DC-DC转换器2A的连续2.5A峰值输出电流1MHz固定开关频率脉冲宽度调制

CXSD6271在1MHz固定开关频率下工作，具有脉冲宽度调制（PWM），并在轻载电流下进入脉冲跳过调制（PSM）操作，以在整个负载电流范围内保持高效率。100%的占空比能力提供低辍学操作，延长电池寿命在便携式系统开关频率内部设置为1MHz，允许使用微小的表面贴装电感和输入/输出电容

                          目录

   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）

   5.产品封装      6.电路原理图     7.相关产品

一.产品概述

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   The CXSD6271 is a high efficiency, synchronous step down DC-DC convertor optimized for battery powered portable applications. It supports up to 2A continuous 2.5A peak output current. With a wide input voltage range of 2.7V to 5.5V, the device supports applications powered by single Li-ion battery with extended voltage range, two and three alkaline cell, 3.3V and 5V input voltage range. 

    The CXSD6271 operates at 1MHz fixed switching frequency with Pulse-Width-Modulation (PWM) and enters Pulse-Skipping-Modulation (PSM) operation at light load current to maintain high efficiency over the entire load current range. 100% duty cycle capability provides low dropout operation, extending battery life in portable systems. The switching frequency is internally set at 1MHz, allowing the use of tiny surface mount inductor and input/output capacitors. 

     The CXSD6271 is available in SOT-23-5L package. Standard product is Pb-free and Halogen -free. 

二.产品特点

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  Input voltage range : 2.7~5.5V

  Continue output current : 2A continuous 2.5A peak

  Switching frequency : 1MHz (Typ.)

  Efficiency : Up to 96%

  Feedback reference voltage : 0.6V

  100% duty cycle for low dropout operation

  Adjustable Output Voltage

三.应用范围

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  Cellphones

  PADs

  STBs    

四.技术规格书（产品PDF)

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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！

 

五.产品封装图

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六.电路原理图

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七.相关芯片选择指南    更多同类产品......

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降压型开关稳压器
Product	VIN		VOUT		IOUT	IQ	Freq.	VFB	Efficiency	PD(@TA = 25¡ãC)	Package
	Min	Max	Min	Max	Max	Typ	Typ	Typ	Max	Max
	(V)		(V)		(mA)	(uA)	(KHz)	(V)	%	(W)
CXSD6271	2.7	5.5	1	4	2000	80	1000	0.6	96%	0.5	SOT-23-5L
CXSD6272	3	5.5	1	4	2000	80	1000	0.6	96	0.5	SOT-23-5L
CXSD6270	2.7	5.5	1	4	1200	65	1500	0.6	92	0.5	SOT-23-5L
CXSD6269	2.7	5.5	1	4	600	22	1500	0.6	95	0.5	SOT-23-5L