CXAS42266可编程过电流阈值电流受限的N沟道MOSFET功率开关高端负载开关应用而设计低RDS（ON）N沟道功率MOSFET由内置电荷泵驱动电荷泵产生高于电源电压的电压以完全增强开关

CXAS42266是一种电流受限的N沟道MOSFET功率开关，专为高端负载开关应用而设计。低RDS（ON）N沟道功率MOSFET由内置电荷泵驱动，该电荷泵产生高于电源电压的电压以完全增强开关。此开关的输入范围为2.7伏至5.5伏，非常适合3.3伏和5伏系统。集成限流电路保护输入电源不受可能导致电源失去调节的大电流的影响。CXAS42266还可以防止热过载，从而限制功耗和结温。电流限制阈值由一个电阻从设定到接地进行编程。在关机模式下，电源电流减小到小于1μA。反向泄漏电流也小于1μA。
·输入电压范围：2.7V至5.5V
可编程过电流阈值
·90mΩ，车辆识别号=5V时，典型的无线电数据系统（打开）
·开/关控制只需2.5V
“欠压锁定
热关机
无反向泄漏电流

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 CXAS42266 is a current limited N-channel MOSFET power switch designed for highside load switching applications. The low RDS(ON) N-channel power MOSFET is driven by a built-in charge pump which generates a voltage higher than the supply voltage to fully enhance the switch. This switch operates with inputs ranging from 2.7V to 5.5V, making it ideal for both 3.3V and 5V systems. An integrated current-limiting circuit protects the input supply against large current which may cause the supply to fall out of regulation. The CXAS42266 is also protected from thermal overload which limits power dissipation and junction temperatures. Current limit threshold is programmed with a resistor from SET to ground. In shutdown mode, the supply current decreases to less than 1μA. The reverse leakage current is also less than 1μA. The GCXAS42266is available in a SOT-23-5 package

   产品特点 返回TOP

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„ Input Voltage Range: 2.7V to 5.5V 

„ Programmable Over-Current Threshold 

„ 90mΩ Typical RDS(ON) at VIN=5V 

„ Only 2.5V Needed for ON/OFF Control 

„ Under-Voltage Lockout 

„ Thermal Shutdown 

„ No Reverse Leakage Current 

„ 5-Pin SOT-23 Package

   应用范围 返回TOP

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„ Hot Swap Supplies 

„ Notebook Computers 

„ Peripheral Ports 

„ Personal Communication Devices

   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