CXAS42278集成双通道负载开关双超低导通电阻每个通道的6A连续开关电流低阈值控制输入可调回转率控制每个开关都由开/关输入（EN1，EN2）独立控制直接与低压GPIO控制信号接口

在CXAS42278中，当开关断开时，为快速输出放电（QOD）添加250Ω片上负载电阻器。装置的上升时间由内部控制，以避免涌入电流，并可使用CTx引脚上的陶瓷电容器进行调整。CXAS42278有14针TDFN封装。CXAS42278是为高压侧负载开关应用而设计的双N沟道MOSFET电源开关，设备的典型RDS（ON）为16mΩ，输出电流限制为6A。每个开关都由开/关输入（EN1，EN2）独立控制，它能够直接与低压GPIO控制信号接口。
集成双通道负载开关
·输入电压范围：0.8V至5.5V
双超低导通电阻（16mΩ）
每个通道的6A连续开关电流
低阈值控制输入
可调回转率控制
快速输出放电晶体管

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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In the CXAS42278, a 250Ω on-chip load resistor is added for quick output discharge (QOD) when the switch is turned off. The rise time of the device is internally controlled in order to avoid in-rush current and can be adjusted using a ceramic capacitor on the CTx pins. The CXAS42278 is available in 14 pin TDFN package.The CXAS42278 is dual N-channel MOSFET power switch designed for high-side load-switching applications, and the device has a typical RDS(ON) of 16mΩ and the output current is limited to 6A. Each switch is independently controlled by an on/off input (EN1, EN2), which is capable of interfacing directly with low-voltage GPIO control signals.

   产品特点 返回TOP

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„ Integrated Dual Channel Load Switch 

„ Input Voltage Range: 0.8V to 5.5V 

„ Dual Ultra-low ON-Resistance (16mΩ) 

„ 6A Continuous Switch Current per channel 

„ Low Threshold Control Inputs 

„ Adjustable Slew-rate Control 

„ Quick Output Discharge Transistor 

„ 14 Pin TDFN Package with Thermal Pad

   应用范围 返回TOP

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„ Notebooks / Netbooks 

„ Tablet PCs 

„ Consumer Electronics 

„ Set-Top-Boxes 

„ Industrial Systems 

„ Telecom Systems

   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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Dual Power Switch
Part NO.	Vin(V) min.	Vin(V) max.	RON (Ohm)	VOUT rising   (μs)	Ilimit (A)	OC Flag	Discharge (Ohm)	Note	Package
CXAS42277	0.8	5.5	10	ADJ	6	N	220	3V ~ 5V Vbias  Needs	AQFN2X2-10
CXAS42278	0.8	5.5	16	ADJ	6	N	220	3V   ~ 5V Vbias Needs	TDFN2X3-14
CXAS42279	2	5.5	87	400	2	Y	200	UL,CB,A/B/C/D/ ILimit=2A/1.5A/1A/0.75A	SOP-8
CXAS42280	2.7	5.5	100	400	1	Y	N	UL,   CB	SOP-8
CXAS42281	2.7	5.5	74	1000	2	Y	N	SS	TDFN2X2-8
CXAS42282	2.7	5.5	72	400	2	Y	N	UL,CB,EOUT1/2 ILimit=2A/1A, A/B/C/D/ ILimit=2A/1.5A/1A/0.75A	TDFN3X3-10
CXAS42283	2.7	5.5	118	400	0.45	Y	N	N/A	SOP-8
CXAS42284	2.7	5.5	118	400	2	Y	N	N/A	SOP-8
CXAS42285/6	2.3	5.5	200	--	0.27	Y	N	A/B/C/D ILimit=0.27A/0.17A/0.25A/0.15A	TSOT-23-5