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MAX14528 PDF预览

MAX14528

更新时间: 2024-11-05 05:48:59
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描述
Adjustable Overvoltage Protector with High Accuracy

MAX14528 数据手册

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19-4357; Rev 0; 10/08  
Adjustable Overvoltage Protector  
with High Accuracy  
7/MAX14528  
General Description  
Features  
The MAX14527/MAX14528 overvoltage protection  
Input Voltage Protection Up to +28V  
devices feature a low 100mΩ (typ) R  
internal FET  
ON  
Preset Internal 2ꢀ.5 ꢁccurate ꢂVꢃꢂ ꢄTresTolꢅs  
.ꢀ7.V (MꢁX14.27)  
and protect low-voltage systems against voltage faults  
up to +28V. When the input voltage exceeds the over-  
voltage threshold, the internal FET is turned off to pre-  
vent damage to the protected components.  
6ꢀ76V (MꢁX14.28)  
ꢁꢅjustable ꢂvervoltage Protection ꢄrip ꢃevel  
The overvoltage protection threshold can be adjusted  
with optional external resistors to any voltage between  
4V and 8V. With the OVLO input set below the external  
OVLO select voltage, the MAX14527/MAX14528 auto-  
matically choose the internal 2.5ꢀ accurate trip  
thresholds. The internal overvoltage thresholds (OVLO)  
are preset to 5.75V typical (MAX14527) or 6.76V typical  
(MAX14528). The MAX14527/MAX14528 are also  
protected against overcurrent events with an internal  
thermal shutdown.  
Integrateꢅ 100mΩ (typ) n-CTannel MꢂSFEꢄ  
SwitcT  
Soft-Start to Minimize In-RusT Current  
ꢁutomatic ꢂvervoltage Protection ꢄrip-ꢃevel  
Selection  
Internal 1.ms Startup Delay  
ꢄTermal STutꢅown Protection  
8-Pin ꢄDFN (2mm x 2mm) Package  
-40°C to +8.°C ꢂperating ꢄemperature Range  
The MAX14527/MAX14528 are offered in a small, 8-pin  
TDFN-EP package and operate over the -40°C to  
+85°C extended temperature range.  
Ordering Information  
Applications  
Cell Phones  
ꢄꢂP  
MꢁRK  
ꢂVꢃꢂ  
(V)  
PꢁRꢄ  
PIN-PꢁCKꢁGE  
Media Players  
MꢁX14.27ETA+T 8 TDFN-EP*  
MꢁX14.28ETA+T 8 TDFN-EP*  
ACR  
ACS  
5.75  
6.76  
PDAs and Palmtop Devices  
Note: Devices are specified over the -40°C to +85°C tempera-  
ture range.  
+Denotes a lead-free/RoHS-compliant package.  
T = Tape and reel.  
*EP = Exposed pad.  
Pin Configuration appears at enꢅ of ꢅata sTeetꢀ  
Typical Application Circuit  
VBUS  
USB  
CONNECTOR  
CHARGER  
INPUT  
IN  
IN  
OUT  
1µF  
OUT  
PMIC  
MAX14527  
MAX14528  
R1  
R2  
OVLO  
GND  
*
*R1 AND R2 ARE REQUIRED ONLY FOR ADJUSTABLE OVLO; OTHERWISE, CONNECT OVLO TO GND.  
________________________________________________________________ Maxim Integrateꢅ Proꢅucts  
1
For pricing, ꢅelivery, anꢅ orꢅering information, please contact Maxim Direct at 1-888-629-4642,  
or visit Maxim's website at wwwꢀmaxim-icꢀcomꢀ  

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