自动进入脉冲频率调制PFM CXSU63141同步整流器固定开关频率1MHz电流模式升压调节器内同步整流器效率高达92%

CXSU63141是同步整流器、固定开关频率（典型为1MHz）和电流模式升压调节器。该设备允许使用小型电感和便携式设备的输出电容器。电流模式控制方案提供快速的瞬态响应和良好的输出电压精度在轻负载时，CXSU63141将自动进入脉冲频率调制（PFM）操作，以减少主开关损耗。

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

   产品概述 返回TOP

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The CXSU63141 is a synchronous rectifier, fixed switching frequency (1MHz typical), and current-mode step-up regulator. The device allows use of small inductors and output capacitors for portable devices. The current-mode control scheme provides fast transient response and good output voltage accuracy   

At light loads, the CXSU63141 will automatically enter in pulse frequency modulation(PFM) operation to reduce the dominant switching losses. During PFM operation, the IC consumes very low quiescent current and maintains high efficiency over the complete load range. The device has a 1.05V start-up voltage and can operate with input voltage down to 0.8V after start-up The CXSU63141 also includes current-limit and over-temperature shutdown to prevent damage in the event of an output overload. The CXSU63141 is available in 2mmx2mm TDFN2x2-8 and TSOT-23-6A packages.

   产品特点 返回TOP

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· Wide 0.8V to VOUT Input Voltage Range 

· Low 1.05V (typical) Start-Up Voltage 

· Low 40mA No Load Bias Current 

· 100mA Output from a Single AA Cell Input 

· 250mA Output from a Dual AA Cell Input 

· Internal Synchronous Rectifier 

· Up to 92% Efficiency 

·<1mA Quiescent Current during Shutdown 

· Current-Mode Operation with Internal Compensation 

 - Stable with Ceramic Output Capacitors 

 - Fast Line Transient Response

 · Fixed 1MHz Oscillator Frequency 

· 1.2A Current-Limit Protection 

· Built-In Soft-Start 

· Over-Temperature Protection with Hysteresis 

· Available in a 2mmx2mm TDFN2x2-8 and TSOT- 23-6A Packages 

· Halogen and Lead Free Available (RoHS Compliant)

   应用范围 返回TOP

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· Cell Phone and Smart Phone 

· PDA, PMP, and MP3 

· Digital Camera 

· Boost Regulator

   技术规格书（产品PDF) 返回TOP 

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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！

 

产品封装图 返回TOP

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电路原理图 返回TOP

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Switching Regulator > Boost Converter
Part_No	Package	Archi-tecture	Input  Voltage		Max Adj. Output  Voltage		Switch Current Limit (max)	Fixed  Output  Voltage	Switching  Frequency	Internal Power   Switch	Sync. Rectifier
			min	max	min	max	(A)	(V)	(kHz)
CXSU63133	SOT89	VM	0.9	5.5	2.5	5.5	0.5	1.8|2.6|2.8|3 |3.3|3.8|4.5|5	-	No	Yes
CXSU63134	MSOP8|TSSOP8 |SOP8	VM	2.5	5.5	2.5	-	-	-	200 ~ 1000	No	No
CXSU63135	TSSOP8|SOP-8P	VM	1	5.5	2.5	5	1	2.5|3.3	300	Yes	Yes
CXSU63136	SOP8	CM	3	40	1.25	40	1.5	-	33 ~ 100	Yes	No
CXSU63137	TQFN5x5-32	CM	2.5	6.5	2.5	18	3	No	1200	Yes	No
CXSU63138	TSOT23-5 TDFN2x2-6	CM	2.5	6	2.5	20	2	-	1500	Yes	No
CXSU63139	TQFN4x4-6 TDFN3x3-12	CM	1.8	5.5	2.7	5.5	5	-	1.2	Yes	Yes
CXSU63140	SOT23-5	CM	2.5	6	2.5	32	1	-	1000	Yes	No
CXSU63141	TSOT-23-6  TDFN2x2-8	CM	1.2	5.5	1.8	5.5	1.2	-	1.2	Yes	Yes