CXSD6259 180KHz固定频率脉冲宽度调制降压DC/DC转换器高效频率补偿4A恒定输出电流

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发表时间：2020-04-19浏览次数：290

CXSD6259 180KHz固定频率脉冲宽度调制降压DC/DC转换器高效频率补偿4A恒定输出电流

目录fee嘉泰姆

1.产品概述 2.产品特点 3.应用范围 4.技术规格书下载（产品PDF文档） fee嘉泰姆
5.产品封装图 6.电路原理图 7.功能概述 8.相关产品fee嘉泰姆

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一,产品概述(General Description) fee嘉泰姆
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The CXSD6259 is a 180 KHz fixed frequency PWM buck (step-down)fee嘉泰姆
DC/DC converter,capable of driving a 4A load with high efficiency, low ripplefee嘉泰姆
and excellent line and load regulation.Requiring a minimum number of external components, the regulator is simple to use and include internaln High efficiencyfee嘉泰姆
frequency compensation and a fixed-frequency oscillator.fee嘉泰姆
The PWM control circuit is able to adjust the duty ratio linearly from 0 to 100%.fee嘉泰姆
An over current protection function is built inside.When short protection functionfee嘉泰姆
happens, the operation frequency will be reduced from 180KHz to 48KHz. An internal compensation block is built in to minimize external component count.fee嘉泰姆
二.产品特点(Features)fee嘉泰姆
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Wide 8V to 36V Input Voltage Rangefee嘉泰姆
Output Adjustable from 1.25V to 32Vfee嘉泰姆
Maximum Duty Cycle 100%fee嘉泰姆
Minimum Drop Out 0.3Vfee嘉泰姆
Fixed 180KHz Switching Frequencyfee嘉泰姆
4A Constant Output Current Capabilityfee嘉泰姆
Internal Optimize Power MOSFETfee嘉泰姆
High efficiencyfee嘉泰姆
Excellent line and load regulationfee嘉泰姆
Built in thermal shutdown functionfee嘉泰姆
Built in current limit functionfee嘉泰姆
Built in output short protection functionfee嘉泰姆
Available in TO-252 packagefee嘉泰姆
三,应用范围 (Applications)fee嘉泰姆
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LCD Monitor and LCD TVfee嘉泰姆
Portable instrument power supplyfee嘉泰姆
Telecom / Networking Equipmentfee嘉泰姆
四.技术规格书下载（产品PDF）fee嘉泰姆
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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！fee嘉泰姆

QQ截图20160419174301.jpg fee嘉泰姆

五,产品封装图 (Package)fee嘉泰姆
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Pin Numberfee嘉泰姆	Pin Namefee嘉泰姆	Descriptionfee嘉泰姆
1fee嘉泰姆	GNDfee嘉泰姆	Ground Pin. Care must be taken in layout. This pin should befee嘉泰姆 placed outside of the Schottky Diode to output capacitorfee嘉泰姆 ground path to prevent switching current spikes from inducingfee嘉泰姆 voltage noise into CXSD6259.fee嘉泰姆
2fee嘉泰姆	FBfee嘉泰姆	Feedback Pin (FB). Through an external resistor dividerfee嘉泰姆 network, FB senses the output voltage and regulates it. Thefee嘉泰姆 feedback threshold voltage is 1.25V.fee嘉泰姆
3fee嘉泰姆	SWfee嘉泰姆	Power Switch Output Pin (SW). SW is the switch node thatfee嘉泰姆 supplies power to the output.fee嘉泰姆
4fee嘉泰姆	VCfee嘉泰姆	Internal Voltage Regulator Bypass Capacity. In typical systemfee嘉泰姆 application, The VC pin connect a 1uf capacity to VIN.fee嘉泰姆
5fee嘉泰姆	VINfee嘉泰姆	Supply Voltage Input Pin. CXSD6259 operates from a 8V to 36Vfee嘉泰姆 DC voltage. Bypass Vin to GND with a suitably largefee嘉泰姆 capacitor to eliminate noise on the input.fee嘉泰姆

六.电路原理图fee嘉泰姆
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七,功能概述fee嘉泰姆
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Parameterfee嘉泰姆	Symbolfee嘉泰姆	Valuefee嘉泰姆	Unitfee嘉泰姆
Input Voltagefee嘉泰姆	Vinfee嘉泰姆	-0.3 to 40fee嘉泰姆	Vfee嘉泰姆
Feedback Pin Voltagefee嘉泰姆	VFBfee嘉泰姆	-0.3 to Vinfee嘉泰姆	Vfee嘉泰姆
Output Switch Pin Voltagefee嘉泰姆	VOutputfee嘉泰姆	-0.3 to Vinfee嘉泰姆	Vfee嘉泰姆
Power Dissipationfee嘉泰姆	PDfee嘉泰姆	Internally limitedfee嘉泰姆	mWfee嘉泰姆
Thermal Resistance (TO252)fee嘉泰姆 (Junction to Ambient, No Heatsink, Free Air)fee嘉泰姆	RJAfee嘉泰姆	50fee嘉泰姆	oC/Wfee嘉泰姆
Operating Junction Temperaturefee嘉泰姆	TJfee嘉泰姆	-40 to 125fee嘉泰姆	oCfee嘉泰姆
Storage Temperaturefee嘉泰姆	TSTGfee嘉泰姆	-65 to 150fee嘉泰姆	oCfee嘉泰姆
Lead Temperature (Soldering, 10 sec)fee嘉泰姆	TLEADfee嘉泰姆	260fee嘉泰姆	oCfee嘉泰姆
ESD (HBM)fee嘉泰姆		>2000fee嘉泰姆	Vfee嘉泰姆

八,相关芯片选择指南fee嘉泰姆
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降压型直流电源变换器芯片(大功率型)fee嘉泰姆
产品型号fee嘉泰姆	输入电压fee嘉泰姆	开关电流fee嘉泰姆	开关频率fee嘉泰姆	电压版本fee嘉泰姆	封装类型fee嘉泰姆
CXSD6257fee嘉泰姆	5V ~ 32Vfee嘉泰姆	4Afee嘉泰姆	300KHzfee嘉泰姆	Adj (0.8V)fee嘉泰姆	TO252-5Lfee嘉泰姆
CXSD6258fee嘉泰姆	5V ~ 32Vfee嘉泰姆	5Afee嘉泰姆	300KHzfee嘉泰姆	Adj (0.8V)fee嘉泰姆	TO263-5Lfee嘉泰姆
CXSD6259fee嘉泰姆	8V ~ 36Vfee嘉泰姆	4Afee嘉泰姆	180KHzfee嘉泰姆	Adj (1.25V)fee嘉泰姆	TO252-5Lfee嘉泰姆
CXSD6260fee嘉泰姆	8V ~ 36Vfee嘉泰姆	5Afee嘉泰姆	180KHzfee嘉泰姆	Adj (1.25V)fee嘉泰姆	TO263-5Lfee嘉泰姆
CXSD6261fee嘉泰姆	8V ~ 40Vfee嘉泰姆	8Afee嘉泰姆	180KHzfee嘉泰姆	Adj (1.25V)fee嘉泰姆	TO220-5Lfee嘉泰姆

使用手机扫描二维码访问 fee嘉泰姆

上一篇：CXSD6209A current mode monolithic buck switching regulator. Operating with an input range of 3.6-40V 2A of continuous output current with two integrated N-Channel MOSFETs

下一篇：CXSD6260 5A恒定输出电流宽8V至36V输入电压优化功率MOSFET短路保护pwm控制

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