CXAS42258 CXAS42258B和CXAS42258C超小型低导通电阻Ron负载开关可控制开启含P沟道MOSFET在1.2V到3.6V的输入电压范围内工作开关由开/关输入EN控制输入能够直接与低压控制信号连接

CXAS42258 CXAS42258B和CXAS42258C是超小型、低导通电阻（Ron）负载开关，可控制开启。该器件包含一个P沟道MOSFET，在1.2V到3.6V的输入电压范围内工作。开关由一个开/关输入（EN）控制，该输入能够直接与低压控制信号连接。在CXAS42258B和CXAS42258C中，增加了一个120Ω片上负载电阻器，用于在开关断开时快速放电输出。CXAS42258A CXAS42258和CXAS42258可在一个节省空间的4端WLCSP中使用，间距为0.4毫米。这些装置的特点是在-40°C至85°C的自由空气温度范围内运行。
低输入电压1.0V至3.6V
“超低RON
-在VIN=3.6V时，RON=78mΩ
-在VIN=2.5V时，RON=93mΩ
-在VIN=1.8V时，RON=109mΩ
-在VIN=1.2V时，RON=146mΩ
最大持续工作电流为500毫安。
·超低静态电流：VIN=1.8V时为82nA
·超低日落电流：VIN为1.8V时为44nA

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 CXAS42258A CXAS42258B and CXAS42258C are .ultra-small, low ON resistance (Ron) load switches with controlled turn on. The devices contain a P-channel MOSFET that operates over an input voltage range 1.2V to 3.6V. The switch is controlled by an on/off input (EN), which is capable of in interfacing directly with low-voltage control signals. In CXAS42258B and CXAS42258C a 120Ω on-chip load resistor is added for output quick discharge when the switch is turned off. CXAS42258A CXAS42258 and CXAS42258 are available in a space-saving 4-terminal WLCSP with 0.4mm pitch. The devices are characterized for operation over the free-air temperature range for -40°C to 85°C.

   产品特点 返回TOP

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„ Low input voltage 1.0V to 3.6V 

„ Ultra low RON 

 - RON =78mΩ at VIN=3.6V 

 - RON =93mΩ at VIN=2.5V 

 - RON =109mΩ at VIN=1.8V 

- RON =146mΩ at VIN=1.2V 

„ 500mA maximum continuous operating current. 

„ Ultra low quiescent current : 82nA at VIN=1.8V 

„ Ultra low sundown current : 44nA at VIN=1.8V 

„ Low Control Input Thresholds Enable Use of 1.2V/1.8V/2.5V/3.3V Logic „ Controlled Slew Rate to Avoid Inrush Currents CXAS42258A and CXAS42258: 40-us tr CXAS42258: 220-us tr 

„ Micro-power shutdown current 

„ 0.8mmX0.8mm 4-pin, pin pitch 0.4mm WLCSP Package 

„ RoHS Compliant

   应用范围 返回TOP

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„ Cellular phones. 

„ Personal Digital Assistants (PDAs) 

„ GPS Devices 

„ MP3 Players 

„ Digital Cameras 

„ RF Modules 

„ Peripheral Ports 

„ Portable Instrumentation

   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