自动进入脉冲频率调制CXSU63179同步整流器固定开关频率电流模式升压调节器低ESR输出电容稳定

CXSU63179是同步整流器、固定开关频率（典型值为1.2兆赫）和电流模式升压调节器。该设备允许使用USB设备的小电感和输出电容器。电流模式控制方案具有快速的瞬态响应和良好的输出电压精度。在轻负载时，CXSU63179将自动进入脉冲频率调制（PFM）操作，以减少主开关损耗。在PFM操作期间，IC消耗非常低的静态电流，并在整个负载范围内保持高效率

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 CXSU63179 is a synchronous rectifier, fixed switching frequency (1.2MHz typical), and current‐mode step‐up regulator. The device allows use of small inductors and output capacitors for USB devices. The current‐mode control scheme provides fast transient response and good output voltage accuracy. At light loads, the CXSU63179 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 CXSU63179 also includes current‐limit and overtemperature shutdown to prevent damage in the event of an output overload. The CXSU63179 is available in ESOP‐8 packages.

   产品特点 返回TOP

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 92%EffiicencySynchronousBoostConverter With 1000‐mA Output Current From 1.8V Input 

 Stable with Low ESR Output Capacitors 

 Fixed 1.2MHz Oscillator Frequency 

 Low EMI Converter (Integrated Anti‐Ringing Function) 

 Low Battery Output 

 Integrated Power SaveModeOperation to Improve Light Load Efficiency 

 On load startup 

 Automatic restart after protection 

 Load Disconnected During Shutdown 

 Output Current‐Limit Protection 

 Over Temperature Protection 

 Under Voltage Protection 

 Enable/ShutdownFunction 

 Available in ESOP‐8 Packages 

 Lead Free and Green Devices Available(RoHS Compliant)

   应用范围 返回TOP

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 Power Bank 

 Tablet 

 Portable Equiment

   技术规格书（产品PDF) 返回TOP 

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产品封装图 返回TOP

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电路原理图 返回TOP

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Step-up Converter
Part No.	Input Voltage	Output Voltage	Current MAX	Frequency	Efficiency	Package
CXSU63168	6V	20V	350mA	1.25MHz	90%	SOT23-6
CXSU63169	6V	20V/28V/35V	1A	1MHz	90%	SOT23-6
CXSU63170	6V	24V	2A	1.5MHz	90%	SOT23-6
CXSU63171	6V	6V	2A	1MHz	90%	SOT23-6
CXSU63172	6V	20V	2A	1.5MHz	88%	SOT23-5
CXSU63173	6V	20V	2A	1.5MHz	88%	SOT23-6
CXSU63174	20V	30V	3.5A	1.2MHz	95%	DFN-10
CXSU63175	6V	--V	--A	1MHz	90%	SOP-8/TSSOP-8
CXSU63176	6V	6V	2A	1MHz	95%	SOT23-6
CXSU63177	5V	5V	2.1A	1.2MHz	92%	/DFN-12/QFN-16QFN-16
CXSU63178	5V	5V	2.1A	1.2MHz	92%	ESOP-8
CXSU63179	5V	5V	6A	1.2MHz	92%	ESOP-8