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：73

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6fB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） 6fB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6fB嘉泰姆

6fB嘉泰姆

一,产品概述(General Description) 6fB嘉泰姆
6fB嘉泰姆
The CXSD6259 is a 180 KHz fixed frequency PWM buck (step-down)6fB嘉泰姆
DC/DC converter,capable of driving a 4A load with high efficiency, low ripple6fB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 efficiency6fB嘉泰姆
frequency compensation and a fixed-frequency oscillator.6fB嘉泰姆
The PWM control circuit is able to adjust the duty ratio linearly from 0 to 100%.6fB嘉泰姆
An over current protection function is built inside.When short protection function6fB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.6fB嘉泰姆
二.产品特点(Features)6fB嘉泰姆
6fB嘉泰姆
Wide 8V to 36V Input Voltage Range6fB嘉泰姆
Output Adjustable from 1.25V to 32V6fB嘉泰姆
Maximum Duty Cycle 100%6fB嘉泰姆
Minimum Drop Out 0.3V6fB嘉泰姆
Fixed 180KHz Switching Frequency6fB嘉泰姆
4A Constant Output Current Capability6fB嘉泰姆
Internal Optimize Power MOSFET6fB嘉泰姆
High efficiency6fB嘉泰姆
Excellent line and load regulation6fB嘉泰姆
Built in thermal shutdown function6fB嘉泰姆
Built in current limit function6fB嘉泰姆
Built in output short protection function6fB嘉泰姆
Available in TO-252 package6fB嘉泰姆
三,应用范围 (Applications)6fB嘉泰姆
6fB嘉泰姆
LCD Monitor and LCD TV6fB嘉泰姆
Portable instrument power supply6fB嘉泰姆
Telecom / Networking Equipment6fB嘉泰姆
四.技术规格书下载（产品PDF）6fB嘉泰姆
6fB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！6fB嘉泰姆

QQ截图20160419174301.jpg 6fB嘉泰姆

五,产品封装图 (Package)6fB嘉泰姆
6fB嘉泰姆
6fB嘉泰姆

Pin Number6fB嘉泰姆	Pin Name6fB嘉泰姆	Description6fB嘉泰姆
16fB嘉泰姆	GND6fB嘉泰姆	Ground Pin. Care must be taken in layout. This pin should be6fB嘉泰姆 placed outside of the Schottky Diode to output capacitor6fB嘉泰姆 ground path to prevent switching current spikes from inducing6fB嘉泰姆 voltage noise into CXSD6259.6fB嘉泰姆
26fB嘉泰姆	FB6fB嘉泰姆	Feedback Pin (FB). Through an external resistor divider6fB嘉泰姆 network, FB senses the output voltage and regulates it. The6fB嘉泰姆 feedback threshold voltage is 1.25V.6fB嘉泰姆
36fB嘉泰姆	SW6fB嘉泰姆	Power Switch Output Pin (SW). SW is the switch node that6fB嘉泰姆 supplies power to the output.6fB嘉泰姆
46fB嘉泰姆	VC6fB嘉泰姆	Internal Voltage Regulator Bypass Capacity. In typical system6fB嘉泰姆 application, The VC pin connect a 1uf capacity to VIN.6fB嘉泰姆
56fB嘉泰姆	VIN6fB嘉泰姆	Supply Voltage Input Pin. CXSD6259 operates from a 8V to 36V6fB嘉泰姆 DC voltage. Bypass Vin to GND with a suitably large6fB嘉泰姆 capacitor to eliminate noise on the input.6fB嘉泰姆

六.电路原理图6fB嘉泰姆
6fB嘉泰姆
6fB嘉泰姆
七,功能概述6fB嘉泰姆
6fB嘉泰姆

Parameter6fB嘉泰姆	Symbol6fB嘉泰姆	Value6fB嘉泰姆	Unit6fB嘉泰姆
Input Voltage6fB嘉泰姆	Vin6fB嘉泰姆	-0.3 to 406fB嘉泰姆	V6fB嘉泰姆
Feedback Pin Voltage6fB嘉泰姆	VFB6fB嘉泰姆	-0.3 to Vin6fB嘉泰姆	V6fB嘉泰姆
Output Switch Pin Voltage6fB嘉泰姆	VOutput6fB嘉泰姆	-0.3 to Vin6fB嘉泰姆	V6fB嘉泰姆
Power Dissipation6fB嘉泰姆	PD6fB嘉泰姆	Internally limited6fB嘉泰姆	mW6fB嘉泰姆
Thermal Resistance (TO252)6fB嘉泰姆 (Junction to Ambient, No Heatsink, Free Air)6fB嘉泰姆	RJA6fB嘉泰姆	506fB嘉泰姆	oC/W6fB嘉泰姆
Operating Junction Temperature6fB嘉泰姆	TJ6fB嘉泰姆	-40 to 1256fB嘉泰姆	oC6fB嘉泰姆
Storage Temperature6fB嘉泰姆	TSTG6fB嘉泰姆	-65 to 1506fB嘉泰姆	oC6fB嘉泰姆
Lead Temperature (Soldering, 10 sec)6fB嘉泰姆	TLEAD6fB嘉泰姆	2606fB嘉泰姆	oC6fB嘉泰姆
ESD (HBM)6fB嘉泰姆		>20006fB嘉泰姆	V6fB嘉泰姆

八,相关芯片选择指南6fB嘉泰姆
6fB嘉泰姆

降压型直流电源变换器芯片(大功率型)6fB嘉泰姆
产品型号6fB嘉泰姆	输入电压6fB嘉泰姆	开关电流6fB嘉泰姆	开关频率6fB嘉泰姆	电压版本6fB嘉泰姆	封装类型6fB嘉泰姆
CXSD62576fB嘉泰姆	5V ~ 32V6fB嘉泰姆	4A6fB嘉泰姆	300KHz6fB嘉泰姆	Adj (0.8V)6fB嘉泰姆	TO252-5L6fB嘉泰姆
CXSD62586fB嘉泰姆	5V ~ 32V6fB嘉泰姆	5A6fB嘉泰姆	300KHz6fB嘉泰姆	Adj (0.8V)6fB嘉泰姆	TO263-5L6fB嘉泰姆
CXSD62596fB嘉泰姆	8V ~ 36V6fB嘉泰姆	4A6fB嘉泰姆	180KHz6fB嘉泰姆	Adj (1.25V)6fB嘉泰姆	TO252-5L6fB嘉泰姆
CXSD62606fB嘉泰姆	8V ~ 36V6fB嘉泰姆	5A6fB嘉泰姆	180KHz6fB嘉泰姆	Adj (1.25V)6fB嘉泰姆	TO263-5L6fB嘉泰姆
CXSD62616fB嘉泰姆	8V ~ 40V6fB嘉泰姆	8A6fB嘉泰姆	180KHz6fB嘉泰姆	Adj (1.25V)6fB嘉泰姆	TO220-5L6fB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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