The 2.5V to 5.5V input voltage range makes the CXSD61040B ideally suited for single Li-Ion battery powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems
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目录
产品概述 返回TOP
The CXSD61040B is a high-efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. The device is available in an adjustable version. Supply current with no load is 40uA and drops to<1uA in shutdown. The 2.5V to 5.5V input voltage range makes the CXSD61040B ideally suited for single Li-Ion battery powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems. PWM/PFM mode operation provides very low output ripple voltage for noise sensitive applications.Switching frequency is internally set at 1.2/2.4MHz, allowing the use of small surface mount inductors and capacitors. Low output voltages are easily supported with the 0.6V feedback reference voltage.
The CXSD61040B is offered in a low profile (1mm) 5-pin, thin SOT package, and is available in an adjustable version.
产品特点 返回TOP
High Efficiency: Up to 96%
2.5V to 5.5V Input Voltage Range
1.2/2.4MHz Constant Frequency Operation
No Schottky Diode Required
Low Dropout Operation:100% Duty Cycle
PFM Mode for High Efficiency in Light Load
Over temperature Protected
Low Quiescent Current: 40μA
Short Circuit Protection
Over Voltage Protection
Inrush Current Limit and Soft Start
Available in SOT23-5 Package
Max Output Current:2A
应用范围 返回TOP
Cellular and Smart Phones
Wireless and DSL Modems
PDAs
Portable Instruments
Digital Still and Video Cameras
PC Cards
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产品封装图 返回TOP
电路原理图 返回TOP
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低压同步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 |
效率 |
静态工作电流 |
待机电流 |
封装 |
|
2.0-6.0V |
1.2V/1.8V/3.3V/可调输出 |
0.7A |
0.6V |
1.5MHz |
96% |
20uA |
SOT-25 |
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|
2.5-6.0V |
可调输出 |
1A |
0.6V |
1.5MHz |
96% |
20uA |
SOT-25 |
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|
2.0-6.0V |
可调输出 |
1.0A |
0.6V |
1.5M |
96% |
20uA |
1uA |
SOT-25 |
|
|
2.3-6.0V |
可调输出 |
1.2A |
0.6V |
1.5M |
96% |
35uA |
1uA |
SOT-25 |
|
|
2.3-6.0V |
可调输出 |
1.5A |
0.6V |
1.5M |
96% |
35uA |
1uA |
SOT-25 |
|
|
2.3-6.0V |
可调输出 |
1.5A |
0.6V |
1.5M |
96% |
35uA |
1uA |
SOT-25 |
|
|
2.0-6.5V |
可调输出 |
2.0A |
0.6V |
1.5M |
96% |
40uA |
1uA |
SOT-26 |
|
|
2.6-6.0V |
可调输出 |
2.0A |
0.6V |
3M |
96% |
30uA |
0.1uA |
SOT-25 |
|
|
2.3-6.5V |
可调输出 |
2.0A |
0.6V |
1.5M |
96% |
40uA |
40uA |
SOP-8 |
|
|
2.3-6.5V |
可调输出 |
3.0A |
0.6V |
1.5M |
95% |
40uA |
40uA |
ESOP-8 |
|
|
2.3V-6.5V |
可调输出 |
1.3A |
0.6V |
1.5M |
96% |
35uA |
35uA |
DFN2*2-6 |
|
|
2.3V-6.5V |
可调输出 |
2A |
0.6V |
1.5M |
95% |
40uA |
40uA |
DFN3*3-10 |
|
|
2.5-6.0V |
可调输出 |
3.0A |
0.6V |
1MHz |
95% |
40uA |
0.1uA |
SOT-25 |
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