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CXSD62253 150 KHz fixed frequency PWM buck (step-down) DC/DC converter 2A load with high efficiency low ripple excellent line and load regulation | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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目录7.相关产品 产品概述 返回TOP The CXSD62253 is a 150 KHz fixed frequency PWM buck (step-down) DC/DC converter, capable of driving a 2A load with high efficiency, low ripple and excellent line and load regulation. Requiring a minimum 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 second current limit function happens, the operation frequency will be reduced from 150KHz to 50KHz. An internal compensation block is built in to minimize external component count.产品特点 返回TOP „ Wide 4.5V to 40V Input Voltage Range „ 3.3V,5V,12V, and adjustable versions „ Output Adjustable from 1.23V to 37V „ Maximum Duty Cycle 100% „ Minimum Drop Out 1.5V „ Fixed 150KHz Switching Frequency „ 2A Constant Output Current Capability „ Internal Optimize Power Transistor „ High efficiency „ Excellent line and load regulation „ TTL shutdown capability „ ON/OFF pin with hysteresis function „ Built in thermal shutdown function „ Built in current limit function „ Built in second current limit function „ Available in SOP8L package 应用范围 返回TOP „ LCD Monitor and LCD TV „ Digital Photo Frame „ Set-up Box „ ADSL Modem „ Telecom / Networking Equipment 技术规格书（产品PDF) 返回TOP 需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持！ 产品封装图 返回TOP
电路原理图 返回TOP
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| 降压型直流电源变换器芯片(高效率型) | |||||
| 产品型号 | 输入电压 | 开关电流 | 开关频率 | 电压版本 | 封装类型 |
| CXSD6253 | 3.6V ~ 18V | 2A | 380KHz | Adj (1.222V) | SOP8L |
| CXSD6254 | 3.6V ~ 23V | 3A | 380KHz | Adj (1.222V) | SOP8L |
| CXSD6255 | 3.6V ~ 18V | 2A | 380KHz | Adj (0.8V) | SOP8L |
| CXSD6256 | 3.6V ~ 18V | 3A | 380KHz | Adj (0.8V) | SOP8L |
| CXSD62253 | 4.5V ~ 40V | 2A | 150KHz | Adj (1.23V)/3.3V/5V/12V | SOP8L |
| CXSD62252 | 4.5V ~ 40V | 3A | 150KHz | Adj (1.23V)/5V | TO252-5L |
| CXSD62555 | 4.5V ~ 40V | 3A | 150KHz | Adj (1.23V)/3.3V/5V/12V | TO263-5L/TO220-5L |
| CXSD62556 | 4.5V ~ 40V | 3A | 52KHz | Adj (1.23V)/5V/12V | TO263-5L/TO220-5L |
