CXSD6261 固定180kHz开关频率8V至40V输入电压低纹波驱动8A负载

发表时间：2020-04-19浏览次数：7

目录Iyd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） Iyd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Iyd嘉泰姆

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一,产品概述(General Description) Iyd嘉泰姆
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The CXSD6261 is a 180 KHz fixed frequency PWM buck (step-down)Iyd嘉泰姆
DC/DC converter,capable of driving a 8A load with high efficiency, low rippleIyd嘉泰姆
and excellent line and load regulation.Requiring a minimum number Iyd嘉泰姆

of external components, the regulator is simple to use and include internal Iyd嘉泰姆

frequency compensation and a fixed-frequency oscillator.Iyd嘉泰姆
The PWM control circuit is able to adjust the duty ratio linearly fromIyd嘉泰姆

0 to 100%.An over current protection function is built inside.When Iyd嘉泰姆

short protection function happens, the operation frequency Iyd嘉泰姆

will be reduced from 180KHz to 48KHz. An internal compensationIyd嘉泰姆

block is built in to minimize external component count.Iyd嘉泰姆
二.产品特点(Features)Iyd嘉泰姆
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Wide 8V to 40V Input Voltage RangeIyd嘉泰姆
Output Adjustable from 1.25V to 36VIyd嘉泰姆
Maximum Duty Cycle 100%Iyd嘉泰姆
Minimum Drop Out 0.3VIyd嘉泰姆
Fixed 180KHz Switching FrequencyIyd嘉泰姆
8A Constant Output Current CapabilityIyd嘉泰姆
Internal Optimize Power MOSFETIyd嘉泰姆
High efficiency up to 96%Iyd嘉泰姆
Excellent line and load regulationIyd嘉泰姆
Built in thermal shutdown functionIyd嘉泰姆
Built in current limit functionIyd嘉泰姆
Built in output short protection functionIyd嘉泰姆
Built in input over voltage protectionIyd嘉泰姆
Available in TO220-5L packageIyd嘉泰姆
三,应用范围 (Applications)Iyd嘉泰姆
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LCD Monitor and LCD TVIyd嘉泰姆
Portable instrument power supplyIyd嘉泰姆
Telecom / Networking EquipmentIyd嘉泰姆
四.技术规格书下载（产品PDF）Iyd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！Iyd嘉泰姆

QQ截图20160419174301.jpg Iyd嘉泰姆

五,产品封装图 (Package)Iyd嘉泰姆
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Pin NumberIyd嘉泰姆	Pin NameIyd嘉泰姆	DescriptionIyd嘉泰姆
1Iyd嘉泰姆	GNDIyd嘉泰姆	Ground Pin. Care must be taken in layout. This pin should beIyd嘉泰姆 placed outside of the Schottky Diode to output capacitorIyd嘉泰姆 ground path to prevent switching current spikes from inducingIyd嘉泰姆 voltage noise into CXSD6261.Iyd嘉泰姆
2Iyd嘉泰姆	FBIyd嘉泰姆	Feedback Pin (FB). Through an external resistor dividerIyd嘉泰姆 network, FB senses the output voltage and regulates it. TheIyd嘉泰姆 feedback threshold voltage is 1.25V.Iyd嘉泰姆
3Iyd嘉泰姆	SWIyd嘉泰姆	Power Switch Output Pin (SW). SW is the switch node thatIyd嘉泰姆 supplies power to the output.Iyd嘉泰姆
4Iyd嘉泰姆	VCIyd嘉泰姆	Internal Voltage Regulator Bypass Capacity. In typical systemIyd嘉泰姆 application, The VC pin connect a 1uf capacity to VIN.Iyd嘉泰姆
5Iyd嘉泰姆	VINIyd嘉泰姆	Supply Voltage Input Pin. CXSD6261 operates from a 8V to 40VIyd嘉泰姆 DC voltage. Bypass Vin to GND with a suitably largeIyd嘉泰姆 capacitor to eliminate noise on the input.Iyd嘉泰姆

六.电路原理图Iyd嘉泰姆
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七,功能概述Iyd嘉泰姆
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ParameterIyd嘉泰姆	SymbolIyd嘉泰姆	ValueIyd嘉泰姆	UnitIyd嘉泰姆
Input VoltageIyd嘉泰姆	VinIyd嘉泰姆	-0.3 to 45Iyd嘉泰姆	VIyd嘉泰姆
Feedback Pin VoltageIyd嘉泰姆	VFBIyd嘉泰姆	-0.3 to VinIyd嘉泰姆	VIyd嘉泰姆
Output Switch Pin VoltageIyd嘉泰姆	VOutputIyd嘉泰姆	-0.3 to VinIyd嘉泰姆	VIyd嘉泰姆
Power DissipationIyd嘉泰姆	PDIyd嘉泰姆	Internally limitedIyd嘉泰姆	mWIyd嘉泰姆
Thermal Resistance (TO220-5L)Iyd嘉泰姆 (Junction to Ambient, No Heatsink, Free Air)Iyd嘉泰姆	RJAIyd嘉泰姆	30Iyd嘉泰姆	oC/WIyd嘉泰姆
Operating Junction TemperatureIyd嘉泰姆	TJIyd嘉泰姆	-40 to 125Iyd嘉泰姆	oCIyd嘉泰姆
Storage TemperatureIyd嘉泰姆	TSTGIyd嘉泰姆	-65 to 150Iyd嘉泰姆	oCIyd嘉泰姆
Lead Temperature (Soldering, 10 sec)Iyd嘉泰姆	TLEADIyd嘉泰姆	260Iyd嘉泰姆	oCIyd嘉泰姆
ESD (HBM)Iyd嘉泰姆		>2000Iyd嘉泰姆	VIyd嘉泰姆

八,相关芯片选择指南Iyd嘉泰姆
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降压型直流电源变换器芯片(大功率型)Iyd嘉泰姆
产品型号Iyd嘉泰姆	输入电压Iyd嘉泰姆	开关电流Iyd嘉泰姆	开关频率Iyd嘉泰姆	电压版本Iyd嘉泰姆	封装类型Iyd嘉泰姆
CXSD6257Iyd嘉泰姆	5V ~ 32VIyd嘉泰姆	4AIyd嘉泰姆	300KHzIyd嘉泰姆	Adj (0.8V)Iyd嘉泰姆	TO252-5LIyd嘉泰姆
CXSD6258Iyd嘉泰姆	5V ~ 32VIyd嘉泰姆	5AIyd嘉泰姆	300KHzIyd嘉泰姆	Adj (0.8V)Iyd嘉泰姆	TO263-5LIyd嘉泰姆
CXSD6259Iyd嘉泰姆	8V ~ 36VIyd嘉泰姆	4AIyd嘉泰姆	180KHzIyd嘉泰姆	Adj (1.25V)Iyd嘉泰姆	TO252-5LIyd嘉泰姆
CXSD6260Iyd嘉泰姆	8V ~ 36VIyd嘉泰姆	5AIyd嘉泰姆	180KHzIyd嘉泰姆	Adj (1.25V)Iyd嘉泰姆	TO263-5LIyd嘉泰姆
CXSD6261Iyd嘉泰姆	8V ~ 40VIyd嘉泰姆	8AIyd嘉泰姆	180KHzIyd嘉泰姆	Adj (1.25V)Iyd嘉泰姆	TO220-5LIyd嘉泰姆

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