CXAS42264是一个120mΩ电源开关，用于自供电和总线供电的通用串行总线（USB）应用程序。包括一些保护功能，如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N沟道MOSFET，使其不受寄生体二极管的影响，从而在开关断电时消除通过开关的反向电流。当电源开关关闭时，CXAS42264具有关闭放电功能。用户可以通过在OUT引脚和DSG引脚之间增加一个外部电阻来实现关机放电功能。它的低静态供电电流和小封装SOT-23-5和ADFN1.5X1.5-6特别适用于PDA、手机等电池供电设备。
120mΩ高侧MOSFET
2.5A电流限制，带折叠
工作范围：2.7V至5.5V
1.9ms典型VOUT开启上升时间
欠压闭锁
65μA静态电源电流
1μA最大备用电源电流
高激活引脚
断电时无反向电流
DSG引脚的关闭放电功能
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[ CXAS42264 ]
目录
7.相关产品
产品概述 返回TOP
The CXAS42264 is an 120mΩ power switch for self-powered and bus-powered Universal Serial Bus (USB) applications. Several Protection features such as current limiting with foldback, and thermal shutdown are included to prevent catastrophic switch failure caused by increasing power dissipation when continuous heavy loads or short circuit occurs. A built-in charge pump is used to drive the N-channel MOSFET that makes it free of parasitic body diode to eliminate any reversed current flow across the switch when it is powered off. The CXAS42264 has a shutdown discharge function when power switch is turned off. User could realize the shutdown discharge function by adding an external resistor between OUT PIN and DSG PIN. Its low quiescent supply current and small package SOT-23-5 and ADFN1.5X1.5-6 is particularly suitable in battery-powered equipment, like PDA, mobile phone.
产品特点 返回TOP
120mΩ High-Side MOSFET
2.5A of Current Limits with Foldback
Operating Range:2.7V to 5.5V
1.9ms Typical VOUT Turn-On Rise Time
Under voltage Lockout
65μA Quiescent Supply Current
1μA Maximum Standby Supply Current
Active-High Enable Pin
No Reverse Current when Power Off
Shutdown Discharge Function at DSG Pin
SOT-23-5 and ADFN1.5X1.5-6 Package Available
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
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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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◀ 上一篇:CXAS42263集成的120mΩ电源开关用于自供电和总线供电的通用串行总线USB应用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电源开关关闭时具有关机放电功能
下一篇▶:CXAS42265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70mΩ高边MOSFET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断电时无反向电流
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