CXSU6345系列是一种采用CMOS工艺的低电源电流PFM升压DC/DC变换器集成电路。采用先进的电路设计，降低了开关过程中产生的高频噪声，输出电压可编程为0.1V级，在1.8～6.0V之间，用构成一个低纹波、高效率的升压型DC/DC变换器
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目录
7.相关产品
产品概述
CXSU6345 Series is a PFM Step-up DC/DC converter IC with low supply current by CMOS process. High frequency noise that occurs during switching is reduced by using advanced circuit designed, output voltage is programmable in 0.1V steps between 1.8~6.0V.A low ripple, high efficiency step-up DC/DC converter can be constructed of CXSU6345Xxx with only three external components. Also available is a CE (chip enable) function that reduce power dissipation during shut-down mode. CXSU6345Xxx is suitable for use with battery-powered instruments with low noise and low supply current.
产品特点
Low ripple and low noise
Operating voltage range：0.9V~6.0V
Output voltage range：1.8V~6.0V(step 0.1V)
Output voltage accuracy：±2%
Output Current：If VIN=1.2V and VOUT=1.9V,then IOUT=100mA
Low start voltage：≤0.9V(at IOUT =1mA)
Maximum oscillator frequency ： 360KHz
High Efficiency：85% (TYP.)
Package： SOT89-3，SOT23-5，SOT23-3
应用范围
Power source for battery-powered equipment
Power source for wireless mouse, wireless keyboard, toys, cameras, camcorders,
VCRs, PDAs, and hand-held communication equipment
Power source for appliances which require higher cell voltage than that of
batteries used in the appliances
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产品封装图
电路原理图
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Step-Up DC/DC Converter（升压DC/DC转换器） |
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Part |
MODE |
VIN |
VOUT |
Accu |
FOSC |
Eff. |
Application |
Package |
|
PFM |
0.9-6.5V |
3.0-5.0V |
±2.5% |
100K |
85% |
①②③④⑤⑥⑧ |
SOT23-3/SOT23-5/SOT89-3 |
|
|
PWM |
0.9-6.5V |
3.0-5.0V |
±2.5% |
100K |
87% |
①②③④⑤⑥⑧ |
SOT23-3/SOT23-5/SOT89-3 |
|
|
PFM |
0.9-6.5V |
2.7-5.6V |
±2.5% |
180K |
85% |
①②③④⑤⑥⑦ |
SOT23-5/SOT89-3/SOT23-3/TO92 |
|
|
PFM/PWM |
0.9-6.5V |
<20V |
±2% |
300K |
88% |
⑥⑦⑨⑩ |
SOT23-5 |
|
|
PFM |
0.9-6.5V |
1.8-6.0V |
±2% |
150K/ |
85% |
①②③④⑤⑥ |
SOT89-3//SOT23-5/SOT23-3 |
|
|
PFM/PWM |
0.9-6.5V |
<20V |
±2% |
300K |
88% |
⑥⑦⑨⑩ |
SOT23-5 |
|
|
CHARGE |
2.7-5.5V |
5.0V |
±3% |
650K |
81% |
①②④⑦⑧ |
SOT23-6 |
|
|
PFM/PWM |
0.9-6.5V |
<20V |
±2% |
1M |
85% |
⑥⑦⑨⑩ |
SOT23-5/ |
|
|
PFM/PWM |
0.9-6.5V |
<20V |
±2% |
1M |
85% |
⑥⑦⑨⑩ |
SOT23-5/SOT89-5 |
|
|
PFM/PWM |
2.5-5.0V |
<12V |
±2% |
1M |
85% |
⑥⑦⑨⑩ |
SOT23-6 |
|
|
PFM/PWM |
2.5-5.0V |
<20V |
±2% |
1M |
88% |
①⑥⑦⑨⑩ |
SOT23-6 |
|
|
PFM/PWM |
0.9-6.5V |
<20V |
±2% |
1.2M |
85% |
⑥⑦⑨⑩ |
SOT23-6 |
|
|
PFM/PWM, Synchronous |
2.9-4.4V |
<5.5V |
±2% |
1M |
94% |
①②④⑦ |
ESOP8 |
|
|
PFM, Synchronous |
0.9-6.5V |
1.8-6.0V |
±2% |
330K |
85% |
①②③④⑤⑥ |
SOT89-3/ SOT23-5/SOT23-3 |
|
|
PFM, Synchronous |
0.9-5.0V |
1.8-5.0V |
± 2% |
400K |
95% |
①②④⑥⑦ |
SOT89/SOT23/SOT23-5/TO92 |
|
|
PFM, Synchronous |
0.9-6.0V |
1.8-6.0V |
±2% |
140K |
81% |
①②③④⑤⑥ |
SOT89/SOT23-3 |
|
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Applications： ①Battery powered equipment②Wireless mouse, Wireless keyboard③Toys④Camera, Video camera⑤VCR⑥PDA⑦LED Lighting⑧Wireless communication equipment⑨MID⑩Audio equipment |
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◀ 上一篇:CMOS升压开关稳压器由参考电压源振荡电路误差放大器相位补偿电路PWM/PFM开关组成CXSU6344占空比为15%的功率因数调制
下一篇▶:低噪声电荷泵升压DC转换器CXSU6347输入电压2.7V-5.5V输出电压5V恒定频率 650KHz负载电流300mA效率高达81%
