CXSD61019 180 KHz fixed frequency PWM buck (step-down) DC/DC converter, capable of driving a 3.5A load with high efficiency, low ripple and excellent line and load regulation
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目录
产品概述 返回TOP
The CXSD61019 is a 180 KHz fixed frequency PWM buck (step-down) DC/DC converter, capable of driving a 3.5A load with high efficiency, low ripple and excellent line and load regulation. Requiring a minimum number 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
产品特点 返回TOP
Wide 8V to 36V Input Voltage Range
Output Adjustable from 1.25V to 32V
Maximum Duty Cycle 100%
Minimum Drop Out 0.3V
Fixed 180KHz Switching Frequency
Maximum 3.5A Switching Current
Internal Optimize Power MOSFET
High efficiency
Excellent line and load regulation
With output constant current loop
Built in thermal shutdown function
Built in current limit function
Built in output short protection function
SOP8-EP package
应用范围 返回TOP
Car Charger
Battery Charger
LCD Monitor and LCD TV
Portable instrument power supply
Telecom / Networking Equipment
技术规格书（产品PDF) 返回TOP
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产品封装图 返回TOP
| Pin Number | Pin Name | Description |
| 1 | NC | No Connected. |
| 2 | SW | Power Switch Output Pin (SW). SW is the switch node that supplies power to the output. (Note: Connected the back exposed PAD to SW.) |
| 3 | GND | Ground Pin. Care must be taken in layout. This pin should be placed outside of the Schottky Diode to output capacitor ground path to prevent switching current spikes from inducing voltage noise into CXSD61019. |
| 4 | FB | Feedack Pin (FB). Through an external resistor divider network, FB senses the output voltage and regulates it. The feedback threshold voltage is 1.25V. |
| 5 | EN | Enable Pin. Drive EN pin low to turn off the device, drive it high to turn it on. |
| 6 | OCSET | Output Constant Current Set Pin. |
| 7 | VC | Internal Voltage Regulator Bypass Capacity. In typical system application, The VC pin connect a 1uf capacity to VIN. |
| 8 | VIN | Supply Voltage Input Pin. CXSD61019 operates from a 8V to 36V DC voltage. Bypass Vin to GND with a suitably large capacitor to eliminate noise on the input. |
电路原理图 返回TOP
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DC-DC降压IC |
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型号 |
输入耐压 |
输出电压 |
输出电流 |
反馈电压 |
工作频率 |
静态工作电流 |
|
|
CXSD61023A |
42V |
可调输出/带CC/cv模式 恒流模式保护 |
3.5A |
0.8V |
125K |
94% |
3mA |
|
CXSD61021A |
42V |
可调输出/带CC/cv模式 恒流模式保护 |
3A |
0.8V |
125K |
94% |
3mA |
|
CXSD61022A |
42V |
可调输出/带CC/cv模式 恒流模式保护 |
2.5A |
0.8V |
125K |
94% |
3mA |
|
40V |
可调输出/带CC/cv模式 |
3A |
0.8V |
225K |
92% |
2.84mA |
|
|
50V |
5V固定输出 |
3.2A |
150K |
87% |
4.7mA |
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|
50V |
5V固定输出 |
2.4A |
150K |
89% |
4.7mA |
||
|
50V |
5V固定输出 |
2.1A |
150K |
90% |
4.7mA |
||
|
50V |
5V固定输出 |
1.8A |
150K |
90% |
4.7mA |
||
|
40V |
可调输出/带CC/CV模式带线损补偿 |
3A |
0.8V |
125K |
94% |
4mA |
|
|
40V |
5V固定输出 |
3.5A |
150K |
93% |
2mA |
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|
45V |
可调输出/ |
2A |
1.23V |
150K |
93% |
2mA |
|
|
40V |
可调输出/带CC/CV模式 |
2A |
1.18V |
110K |
93% |
10mA |
|
|
42V |
可调输出 |
3A |
0.8V |
50-500K |
91% |
3mA |
|
|
40V |
可调输出/带CC/cv模式 |
3A |
1.25V |
180K |
89% |
2.1mA |
|
|
40V |
可调输出/带CC/cv模式 |
3.5A |
1.25V |
180K |
87% |
2.1mA |
|
|
45V |
可调输出/带CC模式 |
3A |
1.25V |
150K |
89% |
2.0mA |
|
|
45V |
可调输出/带CC模式 |
2A |
1.235V |
150K |
83% |
2.0mA |
|
|
4.75V-40V |
可调输出 |
0.8A |
0.8V |
550K |
90% |
10uA |
|
|
4.0-42V |
可调输出 |
1.5A |
0.8V |
650K |
91% |
600uA |
|
|
4.5-25V |
可调输出 |
1.8A |
0.8V |
1.4M |
92% |
1.8mA |
|
|
20V |
可调输出 |
3.5A |
1.2V |
400K |
89% |
700uA |
|
|
28V |
可调输出 |
3A |
1.22V |
380K |
89% |
3mA |
|
|
20V |
可调输出 |
3A |
0.8V |
380K |
88% |
3mA |
|
|
20V |
可调输出 |
2A |
0.8V |
380K |
89% |
2mA |
|
|
45V |
5.0V/可调输出/3.3/12V |
2A |
1.23V |
150K |
82% |
2mA |
|
|
45V |
5.0V/可调输出 |
3A |
1.23V |
380K |
73% |
2mA |
|
|
27V |
可调输出 |
2A |
1.22V |
420K |
95% |
1mA |
|
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