CXAS42268输入电压范围为2V到5.5V欠压锁定功能当存在输入欠压情况时该功能将关闭开关输入逻辑电平与TTL和2.5V至5V CMOS兼容在关机模式下电源电流降低到小于1μA输出电流限制在2AN通道MOSFET电源开关

CXAS42268的输入电压范围为2V到5.5V，适用于3V和5V系统。CXAS42268还具有欠压锁定功能，当存在输入欠压情况时，该功能将关闭开关。输入逻辑电平与TTL和2.5V至5V CMOS兼容。在关机模式下，电源电流降低到小于1μA。CXAS42268可在8针TDFN封装中使用。CXAS42268是一个N通道MOSFET电源开关，专为高压侧负载切换应用而设计，设备具有典型的80m的RDS（ON），输出电流限制在2A。CXAS42268has是一个转换率限制的接通负载开关，并提供一个关闭负载放电电路，以便在开关被禁用时快速关闭负载电路。
2.0V至5.5V输入电压范围
·非常低的RDS（开），通常为80米（5伏）
·VCC=5V时，典型电流限制为2.5A
·回转率限制开启时间1.5毫秒（5伏）
快速关闭负载释放
TTL/CMOS输入逻辑电平
无反向输出电流

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 CXAS42268 operates with an input voltage ranging from 2V to 5.5V. It is suitable for both 3V and 5V systems. The CXAS42268 also features an under voltage lock out which turns the switch off when an input under-voltage condition exists. Input logic levels are TTL and 2.5V to 5V CMOS compatible. In shutdown mode, the supply current decreases to less than 1μA.The CXAS42268 is available in a 8 pin TDFN package.The CXAS42268is a N-channel MOSFET power switch designed for high-side load-switching applications, and the device has a typical RDS(ON) of 80m and the output current is limited to 2A.The CXAS42268has a slew rate limited turnon load switch and offers a shutdown load discharge circuit to rapidly turn off a load circuit when the switch is disabled.

   产品特点 返回TOP

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„ 2.0V to 5.5V Input Voltage Range 

„ Very Low RDS(ON) , Typically 80m. (5V) 

„ Typical Current Limited is 2.5A at VCC=5V

„ Slew Rate Limited Turn-On Time 1.5ms (5V) 

„ Fast Shutdown Load Discharge 

„ TTL/CMOS Input Logic Level 

„ No Reverse Output Current 

„ 8 Pin TDFN Package

   应用范围 返回TOP

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„ Cellular Telephones 

„ Digital Still Cameras 

„ Hot Swap Supplies 

„ Notebook Computers 

„ Personal Communication Devices 

„ Personal Digital Assistants (PDAs)

   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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Single Power Switch
Part NO.	Vin(V) min.	Vin(V) max.	RON  (Ohm)	VOUT  rising  (μs)	Ilimit  (A)	OC  Flag	Discharge (Ohm)	Note	Package
CXAS42257	1	3.6	25	140	1	N	80	RON = 56m ohm@VIN = 1.2V	WLCSP2X2-4
CXAS42258	1	3.6	78	48/220	0.5	N	88/N	RON = 146m ohm@VIN = 1.2V	WLCSP2X2-4
CXAS42259	1.5	5	25	130	3	N	250	RON   = 68m ohm@VIN = 1.5V	WLCSP2X2-4
CXAS42260	1.5	5.5	20	3300	3	N	N	RON   = 48m ohm@VIN = 1.5V	WLCSP2X3-6
CXAS42261	0.6	5.5	12	ADJ	12	N	150	HV   Vbias Needs	ADFN2X2-8
CXAS42262	2.7	5.5	120	150	2	N	75	N/A	SOT-23-5
CXAS42263	2.7	5.5	120	1900	2	N	75	SS	SOT-23-5
CXAS42264	2.7	5.5	120	1900	2.5	N	R	SS,External discharging	SOT-23-5/ADFN1.5X1.5-6
CXAS42265	2.7	5.5	70	1400	1	Y	130	N/A	SOT-23-5
CXAS42266	2.7	5.5	90	1200	ADJ	--	--	--	SOT-23-5
CXAS42267	2.7	5.5	90	1500	ADJ	Y	N	SS,   OC Setting by a R	SOP-8/TDFN2X2-6/ MSOP-8
CXAS42268	2	5.5	80	2500	2.5	N	153	Turn   on delay 800us	TDFN2X2-8
CXAS42269	2	5.5	85	1500	2.5	N	153	Turn on delay   800us	SOT-23-5
CXAS42270	1.5	5.5	80	1000	--	N	R	External   discharging	TDFN1.6X1.6-6
CXAS42271	2.7	5.5	70	1000	1.2	Y	N	SS, Fast SCP, HML 2.0 VOUT Reverse-Voltage Protection	SOT-23-6
CXAS42272	2.7	5.5	70	1000	3.3	Y	N	N/A	MSOP-8
CXAS42273	2.7	5.5	70	1000	1.5	Y	N	N/A	SOP-8
CXAS42274	2.7	5.5	125	1500	0.45	Y	75	N/A	SOP-8
CXAS42275	2.7	5.5	70	1500	2.5	Y	70	N/A	SOP-8/MSOP-8/ TDFN3X3-8
CXAS42276	0.6	5.5	5.5	ADJ	10	N	150	Need a 5V Bbias, A/B/C = 5.5/11/22 m ohm; 10A/6A/4A	TDFN3X3-8/MSOP-8(FD)/SOT-23-6