CXSD62303是一个恒定频率、电流模式的PWM降压转换器。该装置集成了一个主开关和一个同步整流器不需要外部肖特基二极管的高效率。非常适合为使用单电池锂离子（Li+）的便携式设备供电电池。输出电压可调低至0.6V。CXSD62303也可在100%工作循环下运行，以实现低损耗运行，延长电池寿命便携式系统中的生命。
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产品概述 返回TOP
The CXSD62303 is a constant frequency, current mode PWM step-down
converter. The device integrates a main switch and a synchronous rectifier
for high efficiency without an external Schottky diode. It is ideal for
powering portable equipment that runs from a single cell Lithium-Ion (Li+)
battery. The output voltage can be regulated as low as 0.6V. The CXSD62303
can also run at 100% duty cycle for low dropout operation, extending battery
life in portable system. This device offers two operation modes, PWM control
and PFM Mode switching control, which allows a high efficiency over the
wider range of the load.The CXSD62303 is offered in a low profile 5-pin,SOT
package, and is available in an adjustable version and fixed output voltage
of 1.2V,1.5V, 1.8V,2.5V and 3.3V.
产品特点 返回TOP
High Efficiency: Up to 96%
1.5MHz Constant Frequency Operation
800mA Output Current
No Schottky Diode Required
2V to 6V Input Voltage Range
Output Voltage as Low as 0.6V
PFM Mode for High Efficiency in Light Load
100% Duty Cycle in Dropout Operation
Low Quiescent Current: 20μA
Slope Compensated Current Mode Control for
Excellent Line and Load Transient Response
Short Circuit Protection
Thermal Fault Protection
Inrush Current Limit and Soft Start
<1μA Shutdown Current
SOT23-5 package
应用范围 返回TOP
Cellular and Smart Phones
Wireless and DSL Modems
PDAs
Portable Instruments
Digital Still and Video Cameras
MP3 Players
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产品封装图 返回TOP
电路原理图 返回TOP
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DC/DC降压转换器 |
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|
型号 |
输入电压 |
输出电压 |
输出电流 |
效率 |
封装 |
|
8V~30V |
1.2-16V |
2A |
93% |
SOP8 |
|
|
2.5 v |
0.6~5.5 v |
800mA |
94% |
DFN3*3-10L |
|
|
5V~16V |
1.2V~16V |
2A |
92% |
SOP-8L |
|
|
2.3V~6V |
0.6V~6 |
1300MA |
96% |
SOT23-5 |
|
|
2.3V~5.5V |
0.6V~5.5 |
600mA |
96% |
SOT23-5 |
|
|
4.5 v~21 v |
0.8V~17.85V |
2A |
94% |
SOT-23-6 |
|
|
2~6v |
0.6V |
800mA |
96% |
SOT23-5 |
|
|
6.5 |
1.5V~5.0V |
300mA |
96% |
SOT23-3、SOT89-3 |
|
◀ 上一篇:2A输出电流同步降压DC/DC转换器CXSD62302效率高达94%内部补偿功能固定600KHz开关频率逐周期电流限制
下一篇▶:高纹波抑制率低功耗低压差过流和短路保护的CMOS降压型电压稳压器CXSD62304输出电压1.5V~5.0V 300mA输出电流
