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：112

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JIo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） JIo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JIo嘉泰姆

JIo嘉泰姆

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

QQ截图20160419174301.jpg JIo嘉泰姆

五,产品封装图 (Package)JIo嘉泰姆
JIo嘉泰姆
JIo嘉泰姆

Pin NumberJIo嘉泰姆	Pin NameJIo嘉泰姆	DescriptionJIo嘉泰姆
1JIo嘉泰姆	GNDJIo嘉泰姆	Ground Pin. Care must be taken in layout. This pin should beJIo嘉泰姆 placed outside of the Schottky Diode to output capacitorJIo嘉泰姆 ground path to prevent switching current spikes from inducingJIo嘉泰姆 voltage noise into CXSD6259.JIo嘉泰姆
2JIo嘉泰姆	FBJIo嘉泰姆	Feedback Pin (FB). Through an external resistor dividerJIo嘉泰姆 network, FB senses the output voltage and regulates it. TheJIo嘉泰姆 feedback threshold voltage is 1.25V.JIo嘉泰姆
3JIo嘉泰姆	SWJIo嘉泰姆	Power Switch Output Pin (SW). SW is the switch node thatJIo嘉泰姆 supplies power to the output.JIo嘉泰姆
4JIo嘉泰姆	VCJIo嘉泰姆	Internal Voltage Regulator Bypass Capacity. In typical systemJIo嘉泰姆 application, The VC pin connect a 1uf capacity to VIN.JIo嘉泰姆
5JIo嘉泰姆	VINJIo嘉泰姆	Supply Voltage Input Pin. CXSD6259 operates from a 8V to 36VJIo嘉泰姆 DC voltage. Bypass Vin to GND with a suitably largeJIo嘉泰姆 capacitor to eliminate noise on the input.JIo嘉泰姆

六.电路原理图JIo嘉泰姆
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JIo嘉泰姆
七,功能概述JIo嘉泰姆
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ParameterJIo嘉泰姆	SymbolJIo嘉泰姆	ValueJIo嘉泰姆	UnitJIo嘉泰姆
Input VoltageJIo嘉泰姆	VinJIo嘉泰姆	-0.3 to 40JIo嘉泰姆	VJIo嘉泰姆
Feedback Pin VoltageJIo嘉泰姆	VFBJIo嘉泰姆	-0.3 to VinJIo嘉泰姆	VJIo嘉泰姆
Output Switch Pin VoltageJIo嘉泰姆	VOutputJIo嘉泰姆	-0.3 to VinJIo嘉泰姆	VJIo嘉泰姆
Power DissipationJIo嘉泰姆	PDJIo嘉泰姆	Internally limitedJIo嘉泰姆	mWJIo嘉泰姆
Thermal Resistance (TO252)JIo嘉泰姆 (Junction to Ambient, No Heatsink, Free Air)JIo嘉泰姆	RJAJIo嘉泰姆	50JIo嘉泰姆	oC/WJIo嘉泰姆
Operating Junction TemperatureJIo嘉泰姆	TJJIo嘉泰姆	-40 to 125JIo嘉泰姆	oCJIo嘉泰姆
Storage TemperatureJIo嘉泰姆	TSTGJIo嘉泰姆	-65 to 150JIo嘉泰姆	oCJIo嘉泰姆
Lead Temperature (Soldering, 10 sec)JIo嘉泰姆	TLEADJIo嘉泰姆	260JIo嘉泰姆	oCJIo嘉泰姆
ESD (HBM)JIo嘉泰姆		>2000JIo嘉泰姆	VJIo嘉泰姆

八,相关芯片选择指南JIo嘉泰姆
JIo嘉泰姆

降压型直流电源变换器芯片(大功率型)JIo嘉泰姆
产品型号JIo嘉泰姆	输入电压JIo嘉泰姆	开关电流JIo嘉泰姆	开关频率JIo嘉泰姆	电压版本JIo嘉泰姆	封装类型JIo嘉泰姆
CXSD6257JIo嘉泰姆	5V ~ 32VJIo嘉泰姆	4AJIo嘉泰姆	300KHzJIo嘉泰姆	Adj (0.8V)JIo嘉泰姆	TO252-5LJIo嘉泰姆
CXSD6258JIo嘉泰姆	5V ~ 32VJIo嘉泰姆	5AJIo嘉泰姆	300KHzJIo嘉泰姆	Adj (0.8V)JIo嘉泰姆	TO263-5LJIo嘉泰姆
CXSD6259JIo嘉泰姆	8V ~ 36VJIo嘉泰姆	4AJIo嘉泰姆	180KHzJIo嘉泰姆	Adj (1.25V)JIo嘉泰姆	TO252-5LJIo嘉泰姆
CXSD6260JIo嘉泰姆	8V ~ 36VJIo嘉泰姆	5AJIo嘉泰姆	180KHzJIo嘉泰姆	Adj (1.25V)JIo嘉泰姆	TO263-5LJIo嘉泰姆
CXSD6261JIo嘉泰姆	8V ~ 40VJIo嘉泰姆	8AJIo嘉泰姆	180KHzJIo嘉泰姆	Adj (1.25V)JIo嘉泰姆	TO220-5LJIo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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