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MAX6379

更新时间： 2024-11-07 22:58:07
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3-Pin, Ultra-Low-Power SC70/SOT23 Voltage Detectors

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19-1721; Rev 2; 2/03  
3-Pin, Ultra-Low-Power SC70/SOT23  
Voltage Detectors  
General Description  
Features  
The MAX6375–MAX6380 are ultra-low-power circuits  
used for monitoring battery, power-supply, and regulat-  
ed system voltages. Each detector contains a precision  
bandgap reference, comparator, and internally trimmed  
resistors that set specified trip threshold voltages.  
These devices provide excellent circuit reliability and  
low cost by eliminating external components and  
adjustments when monitoring nominal system voltages  
from 2.5V to 5V.  
o Ultra-Low 500nA Supply Current  
(MAX6375/MAX6376/MAX6377)  
o Thresholds Available from 2.20V to 4.63V in  
Approximately 100mV Increments  
o
2.5% Threshold Accuracy Over Temperature  
o Low Cost  
o Available in Three Versions: Push-Pull OUT,  
Push-Pull OUT, and Open-Drain OUT  
These circuits perform a single function: they assert an  
o Power-Supply Transient Immunity  
o No External Components  
output signal whenever the V  
supply voltage falls  
CC  
below a preset threshold. The devices are differentiated  
by their output logic configurations and preset thresh-  
old voltages. The MAX6375/MAX6378 (push-pull) and  
MAX6377/MAX6380 (open-drain) have an active-low  
o Available in Either a 3-Pin SC70  
or 3-Pin SOT23 Package  
output (OUT is logic low when V  
is below V ). The  
TH  
CC  
Ordering Information  
MAX6376/MAX6379 have an active-high push-pull out-  
put (OUT is logic high when V is below V ). All  
CC  
TH  
PART*  
TEMP RANGE  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
3 SOT23-3  
3 SC70-3  
parts are guaranteed to be in the correct output logic  
MAX6375UR _ _ -T  
MAX6375XR _ _ -T  
MAX6376UR _ _ -T  
MAX6376XR _ _ -T  
state for V  
down to 1V. The detector is designed to  
CC  
ignore fast transients on V . The MAX6375/MAX6376/  
CC  
3 SOT23-3  
3 SC70-3  
MAX6377 have voltage thresholds between 2.20V and  
3.08V in approximately 100mV increments. The  
MAX6378/MAX6379/MAX6380 have voltage thresholds  
between 3.30V and 4.63V in approximately 100mV  
increments.  
*
The MAX6375/MAX6376/MAX6377 are available in factory-pre-  
set thresholds from 2.20V to 3.08V, in approximately 0.1V incre-  
ments. The MAX6378/MAX6379/MAX6380 are available in  
factory-preset thresholds from 3.30V to 4.63V, in approximately  
0.1V increments. Choose the desired threshold suffix from  
Table 1 and insert it in the blank spaces following R. There are  
21 standard versions, with a required order increment of 2500  
pieces. Sample stock is generally held on the standard versions  
only (see the Selector Guide). The required order increment is  
10,000 pieces for nonstandard versions (Table 2). Contact facto-  
ry for availability. All devices available in tape-and-reel only.  
Ultra-low supply current of 500nA (MAX6375/MAX6376/  
MAX6377) makes these parts ideal for use in portable  
equipment. All six devices are available in a space-sav-  
ing SC70 package or in a tiny SOT23 package.  
Applications  
Precision Battery Monitoring  
Load Switching/Power Sequencing  
Ordering information continued at end of data sheet  
Power-Supply Monitoring in Digital/Analog Systems  
Portable/Battery-Powered Equipment  
Pin Configuration  
TOP VIEW  
GND  
1
2
OUT(OUT)  
CC  
1
2
MAX6375XR–  
MAX6380XR  
MAX6375UR–  
MAX6380UR  
V
V
3
3
CC  
Selector Guide appears at end of data sheet.  
OUT(OUT)  
GND  
SC70-3  
SOT23-3  
( ) ARE FOR MAX6376/MAX6379 ONLY.  
________________________________________________________________ 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

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