3A输出负载电流输入电压高达45VCXSD62247低功耗待机模式IQ为80μA固定和可调降压（buck）开关式稳压器固定52KHz频率内部振荡器

CXSD62247是一系列易于使用的固定和可调降压（buck）开关式稳压器。这些设备有3.3V、5V的固定输出电压和可调输出版本。这两个版本都能够驱动一个3A负载与优良的线路和负载调节。这些调节器需要最少数量的外部元件，使用简单，包括内部频率补偿和固定频率振荡器

目录

1.产品概述       2.产品特点     

3.应用范围       4.技术规格书下载（PDF文档）

5.产品封装       6.电路原理图  

7.相关产品

   产品概述 返回TOP

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The CXSD62247 is a series of easy to use fixed and adjustable step-down (buck) switch-mode voltage regulators. These devices are available in fixed output voltage of 3.3V, 5V, and an adjustable output version. Both versions are capable of driving a 3A load with excellent line and load regulation. Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation, and a fixed-frequency oscillator. The output voltage is guaranteed to ±3% tolerance under specified input voltage and output load conditions. The oscillator frequency is guaranteed to ±15%. External shutdown is included, featuring typically 80 μA standby current. Self protection features include a two stage frequency reducing current limit for the output switch and an over temperature shutdown for complete protection under fault conditions. The CXSD62247 is available in TO-220B-5L TO220-5L and TO-263-5L packages.

   产品特点 返回TOP

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* 3.3V, 5V and adjustable output versions

* Output adjustable from 1.23v to 43V

* Fixed 52KHz frequency internal oscillator

* Guaranteed 3A output load current

* Input voltage range up to 45V

* Low power standby mode, I_Q typically 80 μA

* TTL shutdown capability

* Excellent line and load regulation

* Requires only 4 external components

* High efficiency

* Thermal shutdown and current limit protection

* Available in TO-220B/TO220 and TO-263 packages

   应用范围 返回TOP

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* Simple High-efficiency step-down regulator

* On-card switching regulators

* Positive to negative converter

* LCD monitor and LCD TV

* DVD recorder and PDP TV

* Battery charger

* Step-down to 3.3V for microprocessors

   技术规格书（产品PDF) 返回TOP 

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产品封装图 返回TOP

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电路原理图 返回TOP

 

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PWM Buck Converter(Non-synchronous)
Part No.	Input Voltage	Output Voltage	Current MAX	Frequency	Efficiency	Package	Precision	OCP	OTP	SP
CXSD62239	20V	ADJ	2A	380KHZ	95%	SOP8	3%	Y	Y	Y
CXSD62240	45V	3.3V/5V/ADJ	3A	150KHZ	90%	TO220/263	3%	Y	Y	Y
CXSD62240H	56V	5V/ADJ	3A	150KHZ	90%	TO220/263	3%	Y	Y	Y
CXSD62241	45V	ADJ	3A	150KHZ	90%	TO252	3%	Y	Y	Y
CXSD62242	45V	ADJ	2A	150KHZ	90%	SOP8	3%	Y	Y	Y
CXSD62243	20V	ADJ	2A	380KHZ	95%	SOP8	3%	Y	Y	Y
CXSD62244	28V	ADJ	3A	380KHZ	95%	SOP8	3%	Y	Y	Y
CXSD62245	32V	ADJ	2A	380KHZ	95%	SOP8	3%	Y	Y	Y
CXSD62246	40V	ADJ	1.8A	150KHZ	90%	SOP8	3%	Y	Y	Y
CXSD62247	45V	3.3V/5V/ADJ	3A	52KHZ	75%	TO220/263	3%	Y	Y	Y
CXSD62248	32V	ADJ	2.5A	52KHZ	95%	SOP8	3%	Y	Y	Y
CXSD62249	32V	ADJ	2.2A	52KHZ	95%	SOP8	3%	Y	Y	Y
CXSD62250	32V	ADJ	2.2A	380KHZ	95%	SOP8	3%	Y	Y	Y
CXSD62251	23V	ADJ	5A	240KHZ	95%	TO263	3%	Y	Y	Y