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MAX6826TUT+

更新时间： 2024-11-30 04:55:19
品牌 Logo 应用领域
美信 - MAXIM 信息通信管理光电二极管
页数 文件大小 规格书
12页 590K
描述
Power Supply Management Circuit, BICMOS, PDSO6,

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MAX6826TUT+ 数据手册

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19-1867; Rev 2; 12/05  
Dual Ultra-Low-Voltage SOT23 µP Supervisors  
with Manual Reset and Watchdog Timer  
General Description  
Features  
The MAX6826–MAX6831 are ultra-low-voltage micro-  
processor (µP) supervisory circuits designed to monitor  
two power supplies and have manual reset and watch-  
dog input functions. These devices assert a system reset  
if any of the monitored supplies fall below the prepro-  
grammed thresholds, and maintain reset for a minimum  
timeout period after the supplies rise above the threshold.  
Microprocessor supervisors significantly improve system  
reliability and accuracy compared to separate ICs or dis-  
crete components. These devices monitor primary volt-  
ages from +1.8V to +5.0V and secondary voltages from  
+0.9V to +2.5V. These devices are guaranteed to be in  
♦ Monitor Primary V  
Supplies from +1.8V  
CC  
to +5.0V and Secondary V  
from +0.9V to +2.5V  
♦ User Adjustable RESET IN Down to +0.63V  
(MAX6826/MAX6827/MAX6828)  
Supplies  
CC2  
♦ 140ms (min) Reset Timeout Delay  
♦ 1.6s Watchdog Timeout Period  
♦ Manual Reset Input  
♦ Three Reset Output Options  
Push-Pull RESET  
Push-Pull RESET  
Open-Drain RESET  
the correct state for V down to +1.0V.  
CC  
A variety of preprogrammed reset threshold voltages  
are available (see the Threshold Suffix Guide). The  
devices include manual reset and watchdog inputs. The  
MAX6829/MAX6830/MAX6831 provide a factory-  
trimmed threshold to monitor a 2nd voltage down to  
+0.9V. The MAX6826/MAX6829 have a push-pull  
RESET, the MAX6827/MAX6830 have a push-pull  
RESET and the MAX6828/MAX6831 have an open-drain  
RESET. The MAX6826/MAX6827/MAX6828 have an aux-  
iliary monitor that allows user adjustable input to monitor  
voltages down to +0.6V. See Selector Guide for func-  
tions available.  
♦ Guaranteed Reset Valid Down to V  
= +1.0V  
CC  
♦ Immune to Short Negative V  
♦ No External Components  
Transients  
CC  
♦ Small 6-pin SOT23 Packages  
Ordering Information  
†
PART  
TEMP RANGE  
-40°C to +125°C  
-40°C to +125°C  
-40°C to +125°C  
-40°C to +125°C  
-40°C to +125°C  
-40°C to +125°C  
PIN-PACKAGE  
6 SOT23-6  
6 SOT23-6  
6 SOT23-6  
6 SOT23-6  
6 SOT23-6  
6 SOT23-6  
MAX6826_UT-T  
MAX6827_UT-T  
MAX6828_UT-T  
MAX6829_ _UT-T  
MAX6830_ _UT-T  
MAX6831_ _UT-T  
________________________Applications  
Portable/Battery-  
Powered Equipment  
Automotive Systems  
Critical µP Monitoring  
Multivoltage Systems  
Embedded Controllers  
Intelligent Instruments  
†
Insert the desired suffix letter (from Standard Versions table) into  
the blanks to complete the part number.  
Pin Configuration  
Devices are available in both leaded and lead-free packaging.  
Specify lead-free by replacing “-T” with “+T” when ordering.  
TOP VIEW  
Standard Versions Table*  
RESET(RESET)  
1
2
3
6
5
4
V
CC  
MAX6826–  
MAX6831  
MAX6826/MAX6827/MAX6828  
GND  
MR  
RESET IN/V  
WDI  
L
S
R
Z
V
CC2  
SOT23-6  
(RESET) MAX6827/MAX6830 ONLY  
RESET IN FOR MAX6826/MAX6827/MAX6828 ONLY  
*Samples are typically available for standard versions only.  
The MAX6826/MAX6827/MAX6828 require a 2.5k minimum  
order increment for all versions. Contact factory for availability.  
V
FOR MAX6829/MAX6830/MAX6831 ONLY  
CC2  
Typical Operating Circuit, Threshold Suffix Guide, and  
Selector Guide appear at end of data sheet.  
Standard Versions Table continued at end of data sheet.  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  
1234567...12

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