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
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[ CXAS42264 ]"
目录
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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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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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