The CXSD61066 is a 180 KHz fixed frequency PWM buck (step-down) DC/DC
converter,capable of driving a 4A load with high efficiency, low ripple and excellent line and load regulation.Requiring a minimumnumber of external components, the regulator is simple to use and include internal frequency compensation and a fixed-frequency oscillator.
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目录
1.产品概述 2.产品特点
3.应用范围 4.下载产品资料PDF文档
5.产品封装图 6.电路原理图
7.功能概述 8.相关产品
一,产品概述(General Description)
The CXSD61066 is a 180 KHz fixed frequency PWM buck (step-down) DC/DC
converter,capable of driving a 4A load with high efficiency, low ripple and excellent line and load regulation.Requiring a minimumnumber of external components, the regulator is simple to use and include internal frequency compensation and a fixed-frequency oscillator.
The PWM control circuit is able to adjust the duty ratio linearly from
0 to 100%.An over current protection function is built inside.When
short protection function happens, the operation frequency will
be reduced from 180KHz to 48KHz. An internal compensation block
is built in to minimize external component count.
二.产品特点(Features)
1.)Wide 8V to 36V Input Voltage Range
2.)Output Adjustable from 1.25V to 32V
3.)Maximum Duty Cycle 100%
4.)Minimum Drop Out 0.3V
5.)Fixed 180KHz Switching Frequency
6.)4A Constant Output Current Capability
7.)Internal Optimize Power MOSFET
8.)High efficiency
9.)Excellent line and load regulation
10.)Built in thermal shutdown function
11.)Built in current limit function
12.)Built in output short protection function
13.)Available in TO-252 package
三,应用范围 (Applications)
LCD Monitor and LCD TV
Portable instrument power supply
Telecom / Networking Equipment
四.下载产品资料PDF文档
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|
Pin Number |
Pin Name |
Description |
|
1 |
GND |
Ground Pin. Care must be taken in layout. This pin should be |
|
2 |
FB |
Feed CXSD61057 n (FB). Through an external resistor divider |
|
3 |
SW |
Power Switch Output Pin (SW). SW is the switch node that |
|
4 |
VC |
Internal Voltage Regulator Bypass Capacity. In typical system |
|
5 |
VIN |
Supply Voltage Input Pin. CXSD61057 operates from a 8V to 36V |
六.电路原理图
七,功能概述
|
Parameter |
Symbol |
Value |
Unit |
|
Input Voltage |
Vin |
-0.3 to 40 |
V |
|
Feedback Pin Voltage |
VFB |
-0.3 to Vin |
V |
|
Output Switch Pin Voltage |
VOutput |
-0.3 to Vin |
V |
|
Power Dissipation |
PD |
Internally limited |
mW |
|
Thermal Resistance (TO252)(Junction to Ambient, No Heatsink, Free Air) |
RJA |
50 |
oC/W |
|
Operating Junction Temperature |
TJ |
-40 to 125 |
oC |
|
Storage Temperature |
TSTG |
-65 to 150 |
oC |
|
Lead Temperature (Soldering, 10 sec) |
TLEAD |
260 |
oC |
|
ESD (HBM) |
>2000 |
V |
八,相关产品 更多同类产品......
|
大电流DC-DC降压IC |
||||||||
|
型号 |
输入耐压 |
输出电压 |
输出电流 |
反馈电压 |
工作频率 |
效率 |
静态工作电流 |
封装 |
|
40V |
可调输出 |
4A |
1.25V |
180K |
94% |
2.1mA |
TO-252-5L |
|
|
36V |
可调输出 |
5A |
1.22V |
240K |
95% |
3.6mA |
TO-263-5L |
|
|
40V |
可调输出 |
5A |
1.25V |
180K |
96% |
2.1mA |
TO-263-5L |
|
|
45V |
可调输出 |
8A |
1.25V |
180K |
96% |
2.1mA |
TO-220-5L |
|
|
40V |
可调输出带CC/CV模式 |
5A |
1.25V |
150K |
86% |
2mA |
TO-263-5L |
|
|
耐高压DC-DC降压IC |
||||||||
|
型号 |
输入耐压 |
输出电压 |
输出电流 |
反馈电压 |
工作频率 |
效率 |
静态工作电流 |
封装 |
|
75V |
1.25-50V可调输出 |
1.2A/5V |
1.25V |
180K |
92% |
3mA |
SOP8 |
|
|
85V |
1.25-20V可调输出 |
0.4A/5V |
1.25V |
150K |
85% |
2.5mA |
ESOP8 |
|
|
100V |
1.25-88V可调输出 |
0.5A/5V,0.3A/15V |
1.25V |
150K |
85% |
3mA |
ESOP8 |
|
|
100V |
1.25-20V可调输出 |
0.6A/5V,0.3A/15V |
1.25V |
150K |
85% |
2.5mA |
ESOP8 |
|
|
65V |
1.35-50V可调输出 |
0.5A/5V,0.35A/15V |
1.35V |
75K |
94% |
5mA |
SOP8 |
|
|
85V |
1.25-20V可调输出 |
0.8A/5V |
1.25V |
150K |
85% |
2.5mA |
TO252-5L |
|
|
85V |
1.25-20V可调输出 |
0.6A/5V,0.3A/15V |
1.25V |
150K |
85% |
2.5mA |
TO-252-5L |
|
|
85V |
1.25-20V可调输出 |
1A/5V,0.6A/15V |
1.25V |
150K |
85% |
2.5mA |
TO-263-5L |
|
|
90V |
1.25-20V可调输出 |
2.1A/5V,1A/15V |
1.25V |
150K |
90% |
2.5mA |
TO-220-7 |
|
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