CXSD62234是一种采用恒定频率、电流模式架构的高效单片同步降压稳压器。该装置可调，固定输出电压为1.5V和1.8V，运行时供电电流仅为20mA，停机时降至≤1mA。
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产品概述 返回TOP
The CXSD62234 is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. The device is available in an adjustable version and fixed output voltages of 1.5V and 1.8V. Supply current during operation is only 20mA and drops to ≤1mA in shutdown. The 2.5V to 5.5V input voltage range makes the CXSD62234 ideally suited for single Li-Ion battery-powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems.Automatic Burst Mode operation increases efficiency at light loads, further extending battery life. Switching frequency is internally set at 1.5MHz, allowing the use of small surface mount inductors and capacitors. The internal synchronous switch increases efficiency and eliminates the need for an external Schottky diode. Low output voltages are easily supported with the 0.6V feedback reference voltage. The CXSD62234 is available in a low profile (1mm) TSOT23-5 package.
产品特点 返回TOP
* High Efficiency: Up to 96%
* High Efficiency at light loads
* Very Low Quiescent Current: Only 20uA During Operation
* 800mA Output Current
* 2.5V to 5.5V Input Voltage Range
* 1.5MHz Constant Frequency Operation
* No Schottky Diode Required
* Low Dropout Operation: 100% Duty Cycle
* 0.6V Reference Allows Low Output Voltages
* Shutdown Mode Draws ≤1uA Supply Current
* Current Mode Operation for Excellent Line and Load Transient Response
* Overtemperature Protected
* Low Profile (1mm) TSOT23-5 Package
应用范围 返回TOP
* Cellular Telephones
* Personal Information Appliances
* Wireless and DSL Modems
* Digital Still Cameras
* MP3 Players
* Portable Instruments
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产品封装图 返回TOP
电路原理图 返回TOP
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PWM Buck Converter（synchronous) |
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Part No. |
Input |
Output Voltage |
Current |
Frequency |
Efficiency |
Package |
Precision |
OCP |
OTP |
SP |
|
Voltage |
MAX |
|||||||||
|
40V |
ADJ |
600mA |
1/2MHZ |
85% |
SOT23-6 |
2% |
Y |
Y |
Y |
|
|
23V |
ADJ |
2A |
340KHZ |
93% |
SOP8 |
2% |
Y |
Y |
Y |
|
|
23V |
ADJ |
2.2A |
340KHZ |
93% |
SOP8-PP |
2% |
Y |
Y |
Y |
|
|
23V |
ADJ |
3.2A |
340KHZ |
93% |
SOP8-PP |
2% |
Y |
Y |
Y |
|
|
23V |
ADJ(PSM) |
3.2A |
340KHZ |
93% |
SOP8-PP |
2% |
Y |
Y |
Y |
|
|
32V |
ADJ |
2A |
340KHZ |
93% |
SOP8-PP |
2% |
Y |
Y |
Y |
|
|
32V |
ADJ |
2A |
600KHZ |
93% |
SOP8-PP |
2% |
Y |
Y |
Y |
|
|
32V |
ADJ |
1.6A |
340KHZ |
93% |
SOP8 |
2% |
Y |
Y |
Y |
|
|
32V |
ADJ |
2.2A |
340KHZ |
93% |
SOP8-PP |
2% |
Y |
Y |
Y |
|
|
32V |
ADJ |
2.2A |
600KHZ |
93% |
SOP8-PP |
2% |
Y |
Y |
Y |
|
|
22V |
ADJ |
3A |
600KHZ |
93% |
SOP8-PP |
2% |
Y |
Y |
Y |
|
|
32V |
ADJ |
2.2A |
200KHZ |
93% |
SOP8-PP |
2% |
Y |
Y |
Y |
|
|
32V |
ADJ |
3A |
340KHZ |
93% |
SOP8-PP |
2% |
Y |
Y |
Y |
|
|
5.5V |
1.2/.15/1.8/ADJ |
800mA |
1.5MHZ |
96% |
SOT23-5 |
2% |
Y |
Y |
Y |
|
|
5.5V |
1.2/.15/1.8/ADJ |
1.2A |
1.5MHZ |
96% |
SOT23-5 |
2% |
Y |
Y |
Y |
|
|
5.5V |
1.2/.15/1.8/ADJ |
1.2A |
1.5MHZ |
96% |
SOT23-5 |
2% |
Y |
Y |
Y |
|
|
5.5V |
1.2/.15/1.8/ADJ |
1.2A |
1.5MHZ |
96% |
SOT23-5 |
2% |
Y |
Y |
Y |
|
|
5.5V |
1.2/.15/1.8/ADJ |
2A |
1.5MHZ |
96% |
SOT23-5 |
2% |
Y |
Y |
Y |
|
|
5.5V |
1.2/.15/1.8/ADJ |
1.5A*2 |
1.5MHZ |
96% |
SOP8 |
2% |
Y |
Y |
Y |
|
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