CXSD6225耐压高至42V输出电流1.5A的异步降压转换器12V转5V效率高达91%轻载高效

CXSD6225是一颗耐压高至42V，输出电流1.5A的异步降压转换器.。CXSD6225是专为车载设备的需求特别优化设计。其采用特别的PWM控制技术，在实现上述要求的同时保持输出纹波最小，对行车记录仪的摄像模组，车载音响设备影响最小

                          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

一.产品概述

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   CXSD6225是一颗耐压高至42V，输出电流1.5A的异步降压转换器.。CXSD6225是专为车载设备的需求特别优化设计。其采用特别的PWM控制技术，在实现上述要求的同时保持输出纹波最小，对行车记录仪的摄像模组，车载音响设备影响最小。为了防止汽车电源的波，CXSD6225增加了输入过压保护，当输入电压大于38V后，把输出关掉，保护后端用电设备。 

  The CXSD6225 is a wide input range, high-efficiency, and high frequency DC-to-DC step-down switching regulator, capable of delivering up to 1.5A of output current. With a fixed switching frequencyof 650KHz, this current mode PWM controlled converter allows the use of small external components, such as ceramic input and output caps, as well as small inductors.CXSD6225also employs a proprietary control scheme that switches the device into a power save mode during light load, thereby extending the range of high efficiency operation. An OVP function protects the IC itself and its downstream system against input voltage surges. With this OVP function, the IC can stand off input voltage as high as 42V, making it an ideal solution for industrial applications such as smart meters as well as automotive applications. In automotive systems, power comes from the battery, with its voltage typicallybetween 9Vand 24V. Including cold crank and double battery jump-starts, the minimum input voltage may be as low as 4Vand the maximum up to 36V, with even higher transient voltages. With these high input voltages, linear regulators cannotbe used for high supply currents withoutoverheating the regulator. Instead, high efficiencyswitching regulators such as CXSD6225 must be used to minimize thermal dissipation. CXSD6225 is available SOT23-6 Packages 

二.产品特点

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◆宽输入电压4.2-42V
◆1.5A输出电流
◆12V转5V效率高达91%
◆轻载高效，待机电流0.6mA
◆38V输入过压保护

◆耐受输入峰值电压达45V
◆基准电压0.80V

◆Wide Input Operating Range from 4V to 38V 

◆ Standoff Input Voltage: 42V 

◆ High Efficiency at 12V In 5V Out: Up to 91%: 

◆ High Efficiency PFM mode at light load 

◆ Capable of Delivering 1.5A 

◆ No External Compensation Needed 

◆Current Mode control 

◆Logic Control Shutdown 

◆ Thermal shutdown and UVLO 

◆ Available in SOT23-6 Package

三.应用范围

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◆车载充电器
◆行车记录仪
◆三相智能电表
◆监控摄像模组
◆家庭网关

◆车载智能系统
◆安防设备    

四.技术规格书（产品PDF)

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五.产品封装图

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六.电路原理图

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七.相关芯片选择指南

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DC-DC>同步降压
Device	Device	Architecture	VIN	VIN	VOUT	VOUT	IOUT
	Description		(min)	(max)	(min)	(max)	(max)
			(V)	(V)	(V)	(V)	(A)
CXSD62018	I2C 18V/2.5A同步降压	I2C控制	4.2	18	0.7	12	2.5
CXSD6219	18V/2A同步降压	外部补偿	4.2	18	0.923	6	2
CXSD6219B	18V/2.5A同步降压	外部补偿	4.2	18	0.923	6	2
CXSD6220	18V/3A同步降压	外部补偿	4.2	18	0.923	6	3
CXSD6221	18V/4A同步降压	外部补偿	4.2	18	0.923	9	4
CXSD6222	18V/2A同步降压	内部补偿	4.2	18	0.8	6	2
CXSD6223	24V/1.2A异步降压	内部补偿	4.2	24	0.81	6	1.2
CXSD6224	24V/0.3A异步降压	内部补偿	4.2	24	0.81	6	0.3
CXSD6225	42V/1.5A异步降压	内部补偿	4.2	38	0.8	6	1.5
CXSD6226	36V/3A异步降压	内部补偿	4.2	36	0.85	12	3
CXSD6227	36V/3.5A异步降压	内部补偿	4.2	36	0.8	12	3.5
CXSD6228	42V/0.6A异步降压	内部补偿	4.2	38	0.8	12	0.6
CXSD6229	42V/0.6A异步降压	内部补偿	4.2	38	0.8	12	0.6
CXSD6230	42V/0.4A异步降压	内部补偿	4.2	38	0.8	6	0.4
CXSD6231	7V/1.2A同步降压	内部补偿	2.6	7	0.6	5	1.2
CXSD6232	6V/1.2A同步降压	内部补偿	2.6	6	0.6	5	1
CXSD6233	6V/2A 3MHz同步降压	内部补偿	2.6	5.5	0.6	5	2
CXSD6234	6V/2A 3MHz同步降压	内部补偿	2.6	5.5	0.6	5	2
CXSD6235	6V/3A同步降压	外部补偿	3.6	6	0.8	5	3
CXSD6235A	6V/3A同步降压	外部补偿	2.5	6	0.8	5	3
CXSD6235B	6V/3A同步降压	外部补偿	2.5	6	0.8	5	3
CXSD6236	6V/3.5A快速响应同步降压	内部补偿	2.6	5.5	0.45	5	3.5
CXSD6237	6V/1.2A同步降压	内部补偿	2.6	6	0.6	5	1
CXSD6238	I2C控制5A快速响应同步降压	内部补偿	2.5	5.5	0.6	1.23	3.5
CXSD6239	6V/1.2A同步降压	内部补偿	2.6	6	0.6	5	1