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：175

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Kkp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） Kkp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Kkp嘉泰姆

Kkp嘉泰姆

一,产品概述(General Description) Kkp嘉泰姆
Kkp嘉泰姆
The CXSD6259 is a 180 KHz fixed frequency PWM buck (step-down)Kkp嘉泰姆
DC/DC converter,capable of driving a 4A load with high efficiency, low rippleKkp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 efficiencyKkp嘉泰姆
frequency compensation and a fixed-frequency oscillator.Kkp嘉泰姆
The PWM control circuit is able to adjust the duty ratio linearly from 0 to 100%.Kkp嘉泰姆
An over current protection function is built inside.When short protection functionKkp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.Kkp嘉泰姆
二.产品特点(Features)Kkp嘉泰姆
Kkp嘉泰姆
Wide 8V to 36V Input Voltage RangeKkp嘉泰姆
Output Adjustable from 1.25V to 32VKkp嘉泰姆
Maximum Duty Cycle 100%Kkp嘉泰姆
Minimum Drop Out 0.3VKkp嘉泰姆
Fixed 180KHz Switching FrequencyKkp嘉泰姆
4A Constant Output Current CapabilityKkp嘉泰姆
Internal Optimize Power MOSFETKkp嘉泰姆
High efficiencyKkp嘉泰姆
Excellent line and load regulationKkp嘉泰姆
Built in thermal shutdown functionKkp嘉泰姆
Built in current limit functionKkp嘉泰姆
Built in output short protection functionKkp嘉泰姆
Available in TO-252 packageKkp嘉泰姆
三,应用范围 (Applications)Kkp嘉泰姆
Kkp嘉泰姆
LCD Monitor and LCD TVKkp嘉泰姆
Portable instrument power supplyKkp嘉泰姆
Telecom / Networking EquipmentKkp嘉泰姆
四.技术规格书下载（产品PDF）Kkp嘉泰姆
Kkp嘉泰姆

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！Kkp嘉泰姆

QQ截图20160419174301.jpg Kkp嘉泰姆

五,产品封装图 (Package)Kkp嘉泰姆
Kkp嘉泰姆
Kkp嘉泰姆

Pin NumberKkp嘉泰姆	Pin NameKkp嘉泰姆	DescriptionKkp嘉泰姆
1Kkp嘉泰姆	GNDKkp嘉泰姆	Ground Pin. Care must be taken in layout. This pin should beKkp嘉泰姆 placed outside of the Schottky Diode to output capacitorKkp嘉泰姆 ground path to prevent switching current spikes from inducingKkp嘉泰姆 voltage noise into CXSD6259.Kkp嘉泰姆
2Kkp嘉泰姆	FBKkp嘉泰姆	Feedback Pin (FB). Through an external resistor dividerKkp嘉泰姆 network, FB senses the output voltage and regulates it. TheKkp嘉泰姆 feedback threshold voltage is 1.25V.Kkp嘉泰姆
3Kkp嘉泰姆	SWKkp嘉泰姆	Power Switch Output Pin (SW). SW is the switch node thatKkp嘉泰姆 supplies power to the output.Kkp嘉泰姆
4Kkp嘉泰姆	VCKkp嘉泰姆	Internal Voltage Regulator Bypass Capacity. In typical systemKkp嘉泰姆 application, The VC pin connect a 1uf capacity to VIN.Kkp嘉泰姆
5Kkp嘉泰姆	VINKkp嘉泰姆	Supply Voltage Input Pin. CXSD6259 operates from a 8V to 36VKkp嘉泰姆 DC voltage. Bypass Vin to GND with a suitably largeKkp嘉泰姆 capacitor to eliminate noise on the input.Kkp嘉泰姆

六.电路原理图Kkp嘉泰姆
Kkp嘉泰姆
Kkp嘉泰姆
七,功能概述Kkp嘉泰姆
Kkp嘉泰姆

ParameterKkp嘉泰姆	SymbolKkp嘉泰姆	ValueKkp嘉泰姆	UnitKkp嘉泰姆
Input VoltageKkp嘉泰姆	VinKkp嘉泰姆	-0.3 to 40Kkp嘉泰姆	VKkp嘉泰姆
Feedback Pin VoltageKkp嘉泰姆	VFBKkp嘉泰姆	-0.3 to VinKkp嘉泰姆	VKkp嘉泰姆
Output Switch Pin VoltageKkp嘉泰姆	VOutputKkp嘉泰姆	-0.3 to VinKkp嘉泰姆	VKkp嘉泰姆
Power DissipationKkp嘉泰姆	PDKkp嘉泰姆	Internally limitedKkp嘉泰姆	mWKkp嘉泰姆
Thermal Resistance (TO252)Kkp嘉泰姆 (Junction to Ambient, No Heatsink, Free Air)Kkp嘉泰姆	RJAKkp嘉泰姆	50Kkp嘉泰姆	oC/WKkp嘉泰姆
Operating Junction TemperatureKkp嘉泰姆	TJKkp嘉泰姆	-40 to 125Kkp嘉泰姆	oCKkp嘉泰姆
Storage TemperatureKkp嘉泰姆	TSTGKkp嘉泰姆	-65 to 150Kkp嘉泰姆	oCKkp嘉泰姆
Lead Temperature (Soldering, 10 sec)Kkp嘉泰姆	TLEADKkp嘉泰姆	260Kkp嘉泰姆	oCKkp嘉泰姆
ESD (HBM)Kkp嘉泰姆		>2000Kkp嘉泰姆	VKkp嘉泰姆

八,相关芯片选择指南Kkp嘉泰姆
Kkp嘉泰姆

降压型直流电源变换器芯片(大功率型)Kkp嘉泰姆
产品型号Kkp嘉泰姆	输入电压Kkp嘉泰姆	开关电流Kkp嘉泰姆	开关频率Kkp嘉泰姆	电压版本Kkp嘉泰姆	封装类型Kkp嘉泰姆
CXSD6257Kkp嘉泰姆	5V ~ 32VKkp嘉泰姆	4AKkp嘉泰姆	300KHzKkp嘉泰姆	Adj (0.8V)Kkp嘉泰姆	TO252-5LKkp嘉泰姆
CXSD6258Kkp嘉泰姆	5V ~ 32VKkp嘉泰姆	5AKkp嘉泰姆	300KHzKkp嘉泰姆	Adj (0.8V)Kkp嘉泰姆	TO263-5LKkp嘉泰姆
CXSD6259Kkp嘉泰姆	8V ~ 36VKkp嘉泰姆	4AKkp嘉泰姆	180KHzKkp嘉泰姆	Adj (1.25V)Kkp嘉泰姆	TO252-5LKkp嘉泰姆
CXSD6260Kkp嘉泰姆	8V ~ 36VKkp嘉泰姆	5AKkp嘉泰姆	180KHzKkp嘉泰姆	Adj (1.25V)Kkp嘉泰姆	TO263-5LKkp嘉泰姆
CXSD6261Kkp嘉泰姆	8V ~ 40VKkp嘉泰姆	8AKkp嘉泰姆	180KHzKkp嘉泰姆	Adj (1.25V)Kkp嘉泰姆	TO220-5LKkp嘉泰姆

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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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