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 CXSD61009 is a 380KHz fixed frequency PWM buck (step-down) DC/DC converter,capable of driving a 3A load with high efficiency, low ripple and excellent line and load regulation. Requiring a 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 enable function, an over current protection function is built inside. When short protection function happens, the operation frequency will be reduced from 380KHz to 80KHz. An internal compensation block is built in to minimize external component count.minimum
二.产品特点(Features)
Wide 3.6V to 18V Input Voltage Range
Output Adjustable from 0.8V to 16V
Maximum Duty Cycle 100%
Minimum Drop Out 0.6V
Fixed 380KHz Switching Frequency
3A Constant Output Current Capability
Internal Optimize Power MOSFET
High efficiency
Excellent line and load regulation
frequency compensation
fixed-frequency oscillator.
TTL shutdown capability
EN pin with hysteresis function
Built in thermal shutdown function
Built in current limit function
Built in output short protection function
Available in SOP8 package
三,应用范围 (Applications)
LCD Monitor and LCD TV
Digital Photo Frame
Set-up Box
ADSL Modem
Telecom / Networking Equipment
四.下载产品资料PDF文档
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|
Pin Number |
Pin Name |
Description |
|
3 |
NC |
No Connected. |
|
4 |
VIN |
Supply Voltage Input Pin. CXSD61009 operates from a 3.6V to 18V DC voltage. Bypass Vin to GND with a suitably large capacitor to eliminate noise on the input. |
|
5,6 |
SW |
Power Switch Output Pin (SW). Output is the switch node that supplies power to the output. |
|
7,8 |
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 CXSD61009. |
|
1 |
FB |
Feedback Pin (FB). Through an external resistor divider network, Feedback senses the output voltage and regulates it.The feedback threshold voltage is 0.8V. |
|
2 |
EN |
Enable Pin. Drive EN pin low to turn off the device, drive it high to turn it on. Floating is default high. |
六.电路原理图
七,功能概述
|
Parameter |
Symbol |
Value |
Unit |
|
Input Voltage |
Vin |
-0.3 to 20 |
V |
|
Feedback Pin Voltage |
VFB |
-0.3 to Vin |
V |
|
EN Pin Voltage |
VEN |
-0.3 to Vin |
V |
|
Output Switch Pin Voltage |
VOutput |
-0.3 to Vin |
V |
|
Power Dissipation |
PD |
Internally limited |
mW |
|
Thermal Resistance (SOP8) |
RJA |
100 |
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......
|
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 |
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 |
||
|
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 |
||
|
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 |
|
