1MHz开关频率CXSU63035紧凑高效同步升压转换器与功率mosfet集成用于单电池锂离子/聚合物电池内部软启动

CXSU63035是一款紧凑、高效、同步升压转换器，集成了用于单电池锂离子/聚合物电池的功率mosfet。这个转换器无开关时仅消耗100uA静态电流。当电流负载较轻时，该变换器进入突发模式以获得高效率。当电流负载为足够重，它进入固定频率的脉宽调制模式

目录

1.产品概述                       2.产品特点
3.应用范围                       4.下载产品资料PDF文档 
5.产品封装图                     6.电路原理图                   
7.功能概述                        8.相关产品

 

一,产品概述(General Description)         
         The CXSU63035 is a compact, high-efficiency, synchronous step-up converter with power MOSFETs integrated for a single-cell Li-ion/polymer battery. This converter
consumes only 100uA quiescent current when no switching. When current load is light, this converter enters burst mode to obtain high efficiency. When current load is
heavy enough, it enters fixed-frequency PWM mode. It adopts peak current mode for fast transient response with internal compensation. This converter contains  cycle-by-cycle current limiting and short protection circuit. It is suitable for iPad-like computers, smart phones and portable handheld devices. The device is packed in ESOP8 package.
二.产品特点(Features)
·Wide input range: 2.6-5V input, 2.0A @5V Vout
· 1MHz switching frequency
· Low RDS(ON): 110mΩ@5V NMOS and 150mΩ@5V PMOS
· Up to 93% efficiency
· Accurate Reference: 0.6V Reference
· Under-Voltage lockout Protection
  Over-Temperature Protection Short Protection
· Internal Soft Start
· 1uA Shutdown current
· RoHS Compliant and Halogen Free
· Compact package: ESOP8
三,应用范围 (Applications)
IPad- like tablet computers
Smart phones
Other portable devices
四.下载产品资料PDF文档 

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五,产品封装图 (Package)

引脚	名字	功能
1	RO	接收输出端: A 端电压比 B 端高 0V 时 RO 为高，A 端电压比 B 端低 300mV 时 RO 为低
2	RE	接收使能端：低电平有效，RE 为高时，接收输出为高阻
3	DE	发送使能端：高电平有效，DE 为低时，发送输出为高阻。 DE 为高电平时 芯片工作在发送状态，DE 为低电平且 RE 为低电平时芯片工作在接收状态。
4	DI	发送数据输入端： DI 为低时，A 输出高电平 B 输出低电平，DI 为高时正好 相反。
5	GND	地，电源负端
6	A	正向接收输入端也即正向发送输出端
7	B	反向接收输入端也即反向发送输出端
8	VCC	电源正端

六.电路原理图


七,功能概述

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UnderVoltage Lockout

An under voltage lockout function prevents device start-up if the supply voltage on VBAT is lower than
approximately 2.8V. When in operation and the battery is being discharged, the device automatically enters the
shutdown mode if the voltage on VBAT drops below approximately 2.5V. This under voltage lockout function is
implemented in order to prevent the malfunctioning of the converter. 
SoftStart
When the device enables the internal start-up cycle, it starts with the first step, the precharge phase. During
precharge, the rectifying switch is turned on until the output capacitor is charged to a value close to the input
voltage. The rectifying switch current is limited in that phase. This also limits the output current under
short-circuit conditions at the output. After charging the output capacitor to the input voltage the device starts
switching.

Application Information

Because of the high integration in the CXSU63035, the application circuit based on this regulator IC is rather
simple. Only input capacitor CIN, output capacitor COUT, inductor L and feedback resistors (R1 and R2) need to
be selected for the targeted applications specifications.
Feedback resistor dividers R1 and R2:
Choose R1 and R2 to program the proper output voltage. To minimize the power consumption under light loads,
it is desirable to choose large resistance values for both R1 and R 2. A value of between 10k and 1M is
recommended for both resistors. If R1=200k is chosen, then R2 can be calculated to be:
R2 = (R1×0.6V)/(VOUT - 0.6V)
Input capacitor CIN:
To minimize the potential noise problem, place a typical X5R or better grade ceramic capacitor really close to
the IN and GND pins. Care should be taken to minimize the loop area formed by CIN, and IN/GND pins. In this
case a 10uF low ESR ceramic is recommended.
Output capacitor COUT:
The output capacitor is selected to handle the output ripple noise requirements. Both steady state ripple and
transient requirements must be taken into consideration when selecting this capacitor. For the best performance,
it is recommended to use X5R or better grade ceramic capacitor with 10V rating and more than two pcs 22uF
Capacitor.
八,相关产品                更多同类产品........    

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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