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MAX4926ELT+

更新时间： 2024-09-16 04:41:55
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美信 - MAXIM /
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Overvoltage Protectors with External pFET

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MAX4926ELT+ 数据手册

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19-0810; Rev 0; 4/07  
Overvoltage Protectors with  
External pFET  
3–MAX4926  
General Description  
Features  
The MAX4923–MAX4926 overvoltage protection  
(OVP) controllers protect low-voltage systems against  
high-voltage faults of up to +28V with an appropriate  
external pFET. When the input voltage exceeds the over-  
voltage lockout (OVLO) threshold, or falls below the  
undervoltage lockout (UVLO) threshold, these devices  
turn off the pFET to prevent damage to protected compo-  
nents and issue a flag to notify the processor of a fault  
condition.  
o Overvoltage Protection Up to +28V  
o Preset 7.18V, 6.16V, 5.65V, and 4.46V Typical  
Overvoltage Trip Levels  
o Preset 2.44V Typical Undervoltage Trip Level  
o
2.5ꢀ ꢁccꢂrate OvervoltageꢃUndervoltage  
Trip Levels  
o Low 13µꢁ (typ) Sꢂpply Cꢂrrent  
o Drives External pFET  
The typical overvoltage trip level is set to 7.18V  
(MAX4923), 6.16V (MAX4924), 5.65V (MAX4925), and  
4.46V (MAX4926). The undervoltage trip level is set to  
2.44V (typ) for all devices.  
o 20ms ꢁdapter Deboꢂnce Time  
o Faꢂlt Flag Indicator  
The input (IN) is ESD protected to 15kV ꢀHM when  
bypassed to ground with a 1µF ceramic capacitor. All  
devices are offered in a small, 6-pin (1.5mm x 1.0mm)  
µDFN package and are specified over the extended  
-40°C to +85°C temperature range.  
o 6-Pin (1.5mm x 1.0mm) µDFN Package  
Typical Operating Circuit  
Applications  
Cell Phones  
Digital Still Cameras  
PDAs and Palmtop Devices  
INPUT  
+1.8V TO 28V  
OUTPUT  
P
MP3 Players  
Pin Configuration  
1
4
IN  
GATE  
1μF  
TOP VIEW  
N.C  
6
N.C  
5
GATE  
4
V
MAX4923–MAX4926  
IO  
3
2
GND  
FLAG  
MA4923–MAX4926  
2
1
3
IN  
GND  
FLAG  
μDFN  
Ordering Information/Selector Guide  
PART  
PIN-PACKAGE  
6 μDFN  
OVLO (V)  
7.18  
UVLO (V)  
2.44  
TOP MARK  
PKG CODE  
L611-1  
MAX4923ELT+*  
MAX4924ELT+  
MAX4925ELT+  
MAX4926ELT+  
LB  
LC  
LD  
LE  
6 μDFN  
6.16  
2.44  
L611-1  
6 μDFN  
5.65  
2.44  
L611-1  
6 μDFN  
4.46  
2.44  
L611-1  
Note: All devices are specified over the -40°C to +85°C operating temperature range.  
+Denotes lead-free package.  
*Future Product—contact factory for availability.  
________________________________________________________________ Maxim Integrated Prodꢂcts  
1
For pricing, delivery, and ordering information, please contact MaximꢃDallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  
1234567

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