2.5A输出电流500KHz同步升压转换器CXSU63041B同步和嵌入式功率mosfet内部软启动以限制涌入电流

CXSU63041B设备为单电池锂离子或锂聚合物，或两到三电池碱性、镍镉或镍氢电池供电的产品提供电源解决方案。转换器产生稳定的输出电压，可由外部电阻分压器调节。它提供高效率的功率转换，并且能够在电源电压下降到2V时在5V处输出高达1.5 A的输出电流。所实现的Boost转换器基于固定开关频率（典型的500 kHz），电流模式控制器使用同步整流器获得最大效率

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 CXSU63041 devices provide a power supply solution for products powered by either a one-cell Li-Ion or Li-polymer, or a two to three-cell alkaline, NiCd or NiMH battery. The converter generates a stable output voltage that is either adjusted by an external resistor divider. It provides high efficient power conversion and is capable of delivering output currents up to 1.5A at 5V at a supply voltage down to 2V. The implemented boost converter is based on a fixed switching frequency (500kHz typical), current-mode controller using a synchronous rectifier to obtain maximum efficiency. Boost switch and rectifier switch are connected internally to provide the lowest leakage inductance and best EMI behavior possible. The current-mode control scheme provides fast transient response and good output voltage accuracy. At light load, the converter will automatically enter into 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 a wide load current range. The converter can be disabled to minimize battery drain. During shutdown, the load is completely disconnected from the battery. The device allows use of small inductors and output capacitors for USB devices.

   产品特点 返回TOP

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 97% Efficiency at VOUT=5V from 3.3V Input 

 Device Quiescent Current: 37μA (Typ) 

 Guaranteed 2.5A Output Current at VOUT=5V from 3.3V Input 

 500kHz PWM Switching Frequency 

 Synchronous and Embedded Power MOSFETs, No Schottky Diode Required 

 Low RDS(ON) (main switch/synchronous switch) at 5.0V output:   20/40mohm 

 Input Voltage Range: 1.8V to 5.25V 

 Adjustable Output Voltage Range: from 2.5V to 5.5V 

 Pulse Frequency Modulation Operation for Improved Efficiency at Low Output Power 

 Current Mode Operation with Internal Compensation for Excellent Line    and Load Transient Response 

 Logic Controlled Shutdown(<1μA) 

 Load Disconnect During Shutdown 

 Automatic output discharge at shutdown: 

    CXSU63041A: Auto output discharge function 

   CXSU63041B: No output discharge function 

 Low Battery Comparator 

 Internal Soft-Start to Limit Inrush Current 

 Over Current Protection 

 Input Under Voltage Lockout 

 Output Over Voltage Protection 

 Over-Temperature Protection 

 Available in 2.1mm x 2.1mm QFN10 Package

   应用范围 返回TOP

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 All Single Cell Li or Dual Cell Battery Operated Products as Tablet PC, Smartbook and Other Portable Equipment 

 Products including portable HDMI and USB-OTG 

 USB Hosts Without Native 5V Supplies 

 USB Charging Port (5V) 

 Power Bank, Battery Backup Units 

 Wireless Peripherals 

 Portable Audio Players 

 Personal Medical Devices 

 Industrial Metering Equipments 

 DC/DC Micro Modules

   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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内置MOS同步DC-DC升压IC
型号	工作模式	电压范围	输出电压	输出电压形式	输出电压精度	输出电流限制	效率	静态电流	工作频率	封装
CXSU63033	PWM	0.9V-5.0V	最大5.5V	可调输出	+/-2%	950mA	90%	0.1uA	1.4MHz	SOT-26
CXSU63033A	PWM	0.85V-5.0V	最大5.0V	可调输出	+/-2%	2A	93%	0.1uA	1.5MHz	SOT23-6
CXSU63034	PWM	0.85V-5.5V	2.5V-5.5V	可调输出/真关断	+/-2%	1.2A	94%	300uA	1.2MHz	SOT23-6
CXSU63035	PWM	2.5V-4.5V	最大6V	可调输出	+/-2%	3.3A	93%	100uA	1MHz	ESOP-8
CXSU63036	PWM	2.4V-6.0V	2.5V-5.3V	可调输出/真关断	+/-2%	6A	91%	180uA	500KHz	ESOP-8
CXSU63037	PWM	2.5V-5.25V	2.5V-5.5V	可调输出	+/-2%	8A	90%	45uA	500KHz	ESOP-8
CXSU63038B	PWM	2.8V-5.0V	最大5.5V	可调输出	+/-2%	4A	91%	180uA	550KHz	ESOP-8
CXSU63038A	PWM	2.5V-6.0V	最大5.5V	可调输出/真关断	+/-2%	6A	90%	0.5uA	1.2MHz	SOP8-PP
CXSU63039	PWM	2.5V-5.5V	最大5.5V	可调输出/真关断	+/-2%	6A	90%	0.5uA	1.2MHz	QFN4X4-16L
CXSU63040	PWM	1.8V-6.0V	最大5.5V	可调输出/真关断	+/-2%	6A	90%	0.5uA	1.2MHz	SOP8-PP
CXSU63041B	PWM	1.8V-5.25V	2.5V-5.5V	可调输出	+/-2%	5A	97%	10uA	500KHz	QFN2X2-10