CXAS42259 CXAS42259C CXAS42259D高侧负载开关用于从1.5V到5V的输入电压负载开关通过元件是内部的25欧姆RON P沟道MOSFET使器件能够支持3A的连续电流有反向电压闭锁功能CMOS/TTL控制逻辑的内部电平偏移

CXAS42259 CXAS42259C CXAS42259D是一系列高侧负载开关，设计用于从1.5V到5V的输入电压。负载开关通过元件是一个内部的25欧姆RON P沟道MOSFET，使器件能够支持高达3A的连续电流。此外，负荷开关支持1.5V。逻辑电平控制和关闭功能在一个小的1毫米X 1毫米4针WLCSP封装。CXAS42259C/D提供100μs的转换范围控制软启动。软启动功能可防止冲击电流事件拉低输入电源电压。CXAS42259C/D具有一个有源负载放电电路，当开关被禁用时，该电路在200Ω负载中切换，以自动放电电容性负载。启用输入上的活动下拉使CXAS42259C/D保持默认断开状态，直到启用引脚被拉到1.2V以上。内部电平移位电路允许低压逻辑信号切换更高的电源电压。启用电压可高达5.5V，不受输入电压的限制。带反向电压块功能的CXAS42259/D，如果车辆识别号消失或车辆识别号小于VOUT；设备将在无泄漏电流的情况下启动。CXAS42259/D工作电压范围使其成为锂离子和NMH/NiCad/碱性电池供电系统以及非电池供电应用的理想选择。该设备提供低静态电流和低关机电流，以最大限度地延长电池寿命。

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 CXAS42259C/D is a family of high-side load switches designed to operation from 1.5V to 5V input voltage. The load switch pass element is an internal 25 ohm RON P-channel MOSFET which enable the device to support up to 3A of continuous current. Additionally, the load switch supports 1.5V. Logic level control and shutdown features in a tiny 1mm X 1mm 4 pin WLCSP package. The CXAS42259C/D provide a slew rage controlled soft-start turn on of 100μs. The soft-start feature is provided to prevent an in-rush current event from pulling down the input supply voltage. The CXAS42259C/D feature an active load discharge circuit which switches in a 200Ω load when the switch is disabled to automatically discharge a capacitive load. An active pull-down on the enable input keeps the CXAS42259C/D in a default OFF state until the enable pin is pulled above 1.2V. Internal level shift circuitry allows low voltage logic signal to switch higher supply voltages. The enable voltage can be as high as 5.5V and is not limited by the input voltage. The CXAS42259/D with reverse voltage block function, if the VIN disappears or VIN is less than VOUT; device will turn of without leakage current. The CXAS42259/D operating voltage range makes them ideal for Lithium ion and NMH/NiCad/Alkaline battery powered systems as well as non-battery powered applications. The device provides low quiescent current and low shutdown current to maximize battery life.

   产品特点 返回TOP

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„ 25m ohm RON 

„ 3A continuous operating current 

„ 1mm X 1mm 4-pin,pin pitch 0.5mm WLCSP package 

„ Input voltage range 1.5V to 5.5V 

„ Internal level shift for CMOS/TTL control logic 

„ Ultra low quiescent current 

„ Micro-power shutdown current 

„ Soft-start. 

„ Load discharge circuit.. 

„ Ultra fast turn off time 

„ With reverse voltage block function.

   应用范围 返回TOP

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„ Cellular phones 

„ Portable Navigation Devices(PND) 

„ Personal Media Players (PMP) 

„ Ultra Mobile PCs 

„ Portable instrumentation 

„ Other Portable applications 

„ PDAs 

„ Industrial and DataComm equirment

   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