CXSD6270高效同步降压DC-DC转换器2.7v至5.5v的宽输入电压脉冲跳过调制（PSM）100%的占空比

CXSD6270是一款高效、同步降压DC-DC转换器，专为电池供电的便携式应用而优化它支持高达1.2A的输出电流该装置具有2.7v至5.5v的宽输入电压范围，支持电压范围扩大的单锂离子电池、2和3个碱性电池、3.3v和5v的输入电压范围。

                          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 CXSD6270 is a high efficiency, synchronous step down DC-DC converter optimized for battery powered portable applications. It supports up to 1.2A 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 CXSD6270 operates at 1.5MHz 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 1.5MHz, allowing the use of tiny surface mount inductor and input/output capacitors. Low output voltage is easily supported with the 0.6V feedback reference voltage.        

    The CXSD6270 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 : 1.2A

  Switching frequency : 1.5MHz (Typ.)

  Efficiency : Up to 92%

  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

  DSCs   

四.技术规格书（产品PDF)

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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