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首页 > 产品中心 > 电源管理 > DC降压型转换器 > Buck降压型芯片 >CXSD6261 固定180kHz开关频率8V至40V输入电压低纹波驱动8A负载
CXSD6261 固定180kHz开关频率8V至40V输入电压低纹波驱动8A负载
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CXSD6261是一个180 kHz固定频率的脉冲宽度调制(降压)
DC/DC变换器,能高效、低纹波驱动8A负载
以及良好的线路和负载调节。要求最少的数量
对于外部组件,调节器使用简单,包括内部组件
频率补偿和固定频率振荡器。
脉宽调制控制电路能够从
0到100%。内置过电流保护功能

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

目录0tm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) 0tm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0tm嘉泰姆

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一,产品概述(General Description)      0tm嘉泰姆
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         The CXSD6261 is a 180 KHz fixed frequency PWM buck (step-down)0tm嘉泰姆
DC/DC converter,capable of driving a 8A load with high efficiency, low ripple0tm嘉泰姆
and excellent line and load regulation.Requiring a minimum number 0tm嘉泰姆

of external components, the regulator is simple to use and include internal 0tm嘉泰姆

frequency compensation and a fixed-frequency oscillator.0tm嘉泰姆
        The PWM control circuit is able to adjust the duty ratio linearly from0tm嘉泰姆

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

short protection function happens, the operation frequency 0tm嘉泰姆

will be reduced from 180KHz to 48KHz. An internal compensation0tm嘉泰姆

 block is built in to minimize external component count.0tm嘉泰姆
二.产品特点(Features)0tm嘉泰姆
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Wide 8V to 40V Input Voltage Range0tm嘉泰姆
Output Adjustable from 1.25V to 36V0tm嘉泰姆
Maximum Duty Cycle 100%0tm嘉泰姆
Minimum Drop Out 0.3V0tm嘉泰姆
Fixed 180KHz Switching Frequency0tm嘉泰姆
8A Constant Output Current Capability0tm嘉泰姆
Internal Optimize Power MOSFET0tm嘉泰姆
High efficiency up to 96%0tm嘉泰姆
Excellent line and load regulation0tm嘉泰姆
Built in thermal shutdown function0tm嘉泰姆
Built in current limit function0tm嘉泰姆
Built in output short protection function0tm嘉泰姆
Built in input over voltage protection0tm嘉泰姆
Available in TO220-5L package0tm嘉泰姆
三,应用范围 (Applications)0tm嘉泰姆
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LCD Monitor and LCD TV0tm嘉泰姆
Portable instrument power supply0tm嘉泰姆
Telecom / Networking Equipment0tm嘉泰姆
四.技术规格书下载(产品PDF)0tm嘉泰姆
0tm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0tm嘉泰姆

 QQ截图20160419174301.jpg0tm嘉泰姆

五,产品封装图 (Package)0tm嘉泰姆
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Pin Number0tm嘉泰姆

Pin Name0tm嘉泰姆

Description0tm嘉泰姆

10tm嘉泰姆

GND0tm嘉泰姆

Ground Pin. Care must be taken in layout. This pin should be0tm嘉泰姆
placed outside of the Schottky Diode to output capacitor0tm嘉泰姆
ground path to prevent switching current spikes from inducing0tm嘉泰姆
voltage noise into CXSD6261.0tm嘉泰姆

20tm嘉泰姆

FB0tm嘉泰姆

Feedback Pin (FB). Through an external resistor divider0tm嘉泰姆
network, FB senses the output voltage and regulates it. The0tm嘉泰姆
feedback threshold voltage is 1.25V.0tm嘉泰姆

30tm嘉泰姆

SW0tm嘉泰姆

Power Switch Output Pin (SW). SW is the switch node that0tm嘉泰姆
supplies power to the output.0tm嘉泰姆

40tm嘉泰姆

VC0tm嘉泰姆

Internal Voltage Regulator Bypass Capacity. In typical system0tm嘉泰姆
application, The VC pin connect a 1uf capacity to VIN.0tm嘉泰姆

50tm嘉泰姆

VIN0tm嘉泰姆

Supply Voltage Input Pin. CXSD6261 operates from a 8V to 40V0tm嘉泰姆
DC voltage. Bypass Vin to GND with a suitably large0tm嘉泰姆
capacitor to eliminate noise on the input.0tm嘉泰姆

六.电路原理图0tm嘉泰姆
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blob.png0tm嘉泰姆

七,功能概述0tm嘉泰姆
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Parameter0tm嘉泰姆

Symbol0tm嘉泰姆

Value0tm嘉泰姆

Unit0tm嘉泰姆

Input Voltage0tm嘉泰姆

Vin0tm嘉泰姆

-0.3 to 450tm嘉泰姆

V0tm嘉泰姆

Feedback Pin Voltage0tm嘉泰姆

VFB0tm嘉泰姆

-0.3 to Vin0tm嘉泰姆

V0tm嘉泰姆

Output Switch Pin Voltage0tm嘉泰姆

VOutput0tm嘉泰姆

-0.3 to Vin0tm嘉泰姆

V0tm嘉泰姆

Power Dissipation0tm嘉泰姆

PD0tm嘉泰姆

Internally limited0tm嘉泰姆

mW0tm嘉泰姆

Thermal Resistance (TO220-5L)0tm嘉泰姆
(Junction to Ambient, No Heatsink, Free Air)0tm嘉泰姆

RJA0tm嘉泰姆

300tm嘉泰姆

oC/W0tm嘉泰姆

Operating Junction Temperature0tm嘉泰姆

TJ0tm嘉泰姆

-40 to 1250tm嘉泰姆

oC0tm嘉泰姆

Storage Temperature0tm嘉泰姆

TSTG0tm嘉泰姆

-65 to 1500tm嘉泰姆

oC0tm嘉泰姆

Lead Temperature (Soldering, 10 sec)0tm嘉泰姆

TLEAD0tm嘉泰姆

2600tm嘉泰姆

oC0tm嘉泰姆

ESD (HBM)0tm嘉泰姆

 

>20000tm嘉泰姆

V0tm嘉泰姆

八,相关芯片选择指南0tm嘉泰姆
0tm嘉泰姆

降压型直流电源变换器芯片(大功率型)0tm嘉泰姆

产品型号0tm嘉泰姆

输入电压0tm嘉泰姆

开关电流0tm嘉泰姆

开关频率0tm嘉泰姆

电压版本0tm嘉泰姆

封装类型0tm嘉泰姆

CXSD62570tm嘉泰姆

5V ~ 32V0tm嘉泰姆

4A0tm嘉泰姆

300KHz0tm嘉泰姆

Adj   (0.8V)0tm嘉泰姆

TO252-5L0tm嘉泰姆

CXSD62580tm嘉泰姆

5V ~ 32V0tm嘉泰姆

5A0tm嘉泰姆

300KHz0tm嘉泰姆

Adj   (0.8V)0tm嘉泰姆

TO263-5L0tm嘉泰姆

CXSD62590tm嘉泰姆

8V ~ 36V0tm嘉泰姆

4A0tm嘉泰姆

180KHz0tm嘉泰姆

Adj   (1.25V)0tm嘉泰姆

TO252-5L0tm嘉泰姆

CXSD62600tm嘉泰姆

8V ~ 36V0tm嘉泰姆

5A0tm嘉泰姆

180KHz0tm嘉泰姆

Adj   (1.25V)0tm嘉泰姆

TO263-5L0tm嘉泰姆

CXSD62610tm嘉泰姆

8V ~ 40V0tm嘉泰姆

8A0tm嘉泰姆

180KHz0tm嘉泰姆

Adj   (1.25V)0tm嘉泰姆

TO220-5L0tm嘉泰姆

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