CXAS42271是一款集成电源开关，用于自供电和总线供电的通用串行总线（USB）应用。RDS（开）为70mΩ。一些保护功能包括限流和热关机，以防止在连续重负载或短路发生时，由于增加功耗而导致灾难性开关故障。内置电荷泵用于驱动无寄生体二极管的N沟道MOSFET，以消除开关断电时的反向电流。当输出电压高于输入电压时，由内部输出反向电压比较器切断电源开关。OC是开路漏极输出报告过流或过温事件，具有典型的9ms脱胶超时时间。此外，OC还报告输出反向电压情况，典型的5ms脱胶超时时间。
70mΩ高边MOSFET
MHL电源开关的电流限制
工作范围：2.7V至5.5V
·典型上升时间为1毫秒
快速过电流响应-3μs（典型）
“欠压锁定
·130μA静态电源电流
·1μA最大关闭电源电流
逻辑电平启用引脚，可用于高电平或低电平
·断电时无反向电流
·电流标志输出（OC）上的脱胶开路漏极
输出反向电压保护
[ CXAS42271 ]
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产品概述 返回TOP
产品特点 返回TOP
„ 70mΩ High-Side MOSFET
„ Current Limit for MHL Power Switch
„ Operating Range:2.7V to 5.5V
„ 1mS Typical Rise Time
„ Fast Overcurrent Response -3μs (TYPICAL)
„ Under voltage Lockout
„ 130μA Quiescent Supply Current
„ 1μA Maximum Shutdown Supply Current
„ Logic Level Enable Pin, Available with Active-High or Active-Low Version
„ No Reverse Current when Power Off
„ Deglitched Open-Drain Over-Current Flag Output ( OC )
„ Output Reverse-Voltage Protection
„ SOT-23-6 Packages
应用范围 返回TOP
„ MHL Power Switch
„ High-Side Power Protection Switch
„ USB Power Management
„ USB Host and Self-Powered Bubs
„ USB Bus-Powered Hubs
„ Hot Plug-In Power Supplies
„ Battery-Charger Circuits
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产品封装图 返回TOP
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Single Power Switch |
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|
Part NO. |
Vin(V) min. |
Vin(V) max. |
RON (Ohm) |
VOUT rising (μs) |
Ilimit (A) |
OC Flag |
Discharge (Ohm) |
Note |
Package |
|
1 |
3.6 |
25 |
140 |
1 |
N |
80 |
RON = 56m ohm@VIN = 1.2V |
WLCSP2X2-4 |
|
|
1 |
3.6 |
78 |
48/220 |
0.5 |
N |
88/N |
RON = 146m ohm@VIN = 1.2V |
WLCSP2X2-4 |
|
|
1.5 |
5 |
25 |
130 |
3 |
N |
250 |
RON = 68m ohm@VIN = 1.5V |
WLCSP2X2-4 |
|
|
1.5 |
5.5 |
20 |
3300 |
3 |
N |
N |
RON = 48m ohm@VIN = 1.5V |
WLCSP2X3-6 |
|
|
0.6 |
5.5 |
12 |
ADJ |
12 |
N |
150 |
HV Vbias Needs |
ADFN2X2-8 |
|
|
2.7 |
5.5 |
120 |
150 |
2 |
N |
75 |
N/A |
SOT-23-5 |
|
|
2.7 |
5.5 |
120 |
1900 |
2 |
N |
75 |
SS |
SOT-23-5 |
|
|
2.7 |
5.5 |
120 |
1900 |
2.5 |
N |
R |
SS,External discharging |
SOT-23-5/ADFN1.5X1.5-6 |
|
|
2.7 |
5.5 |
70 |
1400 |
1 |
Y |
130 |
N/A |
SOT-23-5 |
|
|
2.7 |
5.5 |
90 |
1200 |
ADJ |
-- |
-- |
-- |
SOT-23-5 |
|
|
2.7 |
5.5 |
90 |
1500 |
ADJ |
Y |
N |
SS, OC Setting by a R |
SOP-8/TDFN2X2-6/ MSOP-8 |
|
|
2 |
5.5 |
80 |
2500 |
2.5 |
N |
153 |
Turn on delay 800us |
TDFN2X2-8 |
|
|
2 |
5.5 |
85 |
1500 |
2.5 |
N |
153 |
Turn on delay 800us |
SOT-23-5 |
|
|
1.5 |
5.5 |
80 |
1000 |
-- |
N |
R |
External discharging |
TDFN1.6X1.6-6 |
|
|
2.7 |
5.5 |
70 |
1000 |
1.2 |
Y |
N |
SS, Fast SCP, HML 2.0 VOUT Reverse-Voltage Protection |
SOT-23-6 |
|
|
2.7 |
5.5 |
70 |
1000 |
3.3 |
Y |
N |
N/A |
MSOP-8 |
|
|
2.7 |
5.5 |
70 |
1000 |
1.5 |
Y |
N |
N/A |
SOP-8 |
|
|
2.7 |
5.5 |
125 |
1500 |
0.45 |
Y |
75 |
N/A |
SOP-8 |
|
|
2.7 |
5.5 |
70 |
1500 |
2.5 |
Y |
70 |
N/A |
SOP-8/MSOP-8/ TDFN3X3-8 |
|
|
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 |
|
|
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