CXAS42283有几种保护功能，包括带折叠的限流和热关机，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。OC是开漏输出报告过流或过温事件，具有典型的9ms脱胶超时时间。CXAS42283是一个集成的双通道118mΩ电源开关，用于自供电和总线供电的通用串行总线（USB）应用。
118mΩ高侧MOSFET
带折叠箱的450mA典型电流限制
工作范围：2.7V至5.5V
·400μS典型上升时间
“欠压锁定
·65μA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
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[ CXAS42283 ]"
目录
7.相关产品
产品概述 返回TOP
Several Protection features include current limiting with foldback, and thermal shutdown to prevent catastrophic switch failure caused by increasing power dissipation when continuous heavy loads or short circuit occurs. And a built-in charge pump is used to drive the N-channel MOSFET that is free of parasitic body diode to eliminate any reversed current flow across the switch when it is powered off. OC is open-drain output report over-current or over-temperature event and has typical 9ms deglitch timeout period.The CXAS42283 is an integrated dual channel 118mΩ power switch for self-powered and bus-powered Universal Serial Bus (USB) applications.
产品特点 返回TOP
„ 118mΩ High-Side MOSFET
„ 450mA Typical Current Limit with Foldback
„ Operating Range:2.7V to 5.5V
„ 400μS Typical Rise Time
„ Under voltage Lockout
„ 65μA 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 )
„ SOP-8 Package
应用范围 返回TOP
„ 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
电路原理图 返回TOP
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Dual Power Switch |
|||||||||
|
Part NO. |
Vin(V) min. |
Vin(V) max. |
RON (Ohm) |
VOUT rising (μs) |
Ilimit (A) |
OC Flag |
Discharge (Ohm) |
Note |
Package |
|
0.8 |
5.5 |
10 |
ADJ |
6 |
N |
220 |
3V ~ 5V Vbias Needs |
AQFN2X2-10 |
|
|
0.8 |
5.5 |
16 |
ADJ |
6 |
N |
220 |
3V ~ 5V Vbias Needs |
TDFN2X3-14 |
|
|
2 |
5.5 |
87 |
400 |
2 |
Y |
200 |
UL,CB,A/B/C/D/ ILimit=2A/1.5A/1A/0.75A |
SOP-8 |
|
|
2.7 |
5.5 |
100 |
400 |
1 |
Y |
N |
UL, CB |
SOP-8 |
|
|
2.7 |
5.5 |
74 |
1000 |
2 |
Y |
N |
SS |
TDFN2X2-8 |
|
|
2.7 |
5.5 |
72 |
400 |
2 |
Y |
N |
UL,CB,EOUT1/2 ILimit=2A/1A, A/B/C/D/ ILimit=2A/1.5A/1A/0.75A |
TDFN3X3-10 |
|
|
2.7 |
5.5 |
118 |
400 |
0.45 |
Y |
N |
N/A |
SOP-8 |
|
|
2.7 |
5.5 |
118 |
400 |
2 |
Y |
N |
N/A |
SOP-8 |
|
|
2.3 |
5.5 |
200 |
-- |
0.27 |
Y |
N |
A/B/C/D ILimit=0.27A/0.17A/0.25A/0.15A |
TSOT-23-5 |
|
