參數(shù)資料
型號(hào): MAX6519UKN015+T
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: 溫度/濕度傳感器
英文描述: Low-Cost, 2.7V to 5.5V, Analog Temperature Sensor Switches in a SOT23
中文描述: DIGITAL TEMP SENSOR-SINGLE TRIP POINT, 1.50Cel, RECTANGULAR, SURFACE MOUNT
封裝: MO-178-AA, SOT-23, 5 PIN
文件頁數(shù): 19/22頁
文件大?。?/td> 561K
代理商: MAX6519UKN015+T
MAX6516–MAX6519
Low-Cost, Fail-Safe Temperature
In high-performance/high-reliability applications, multi-
ple temperature monitoring is important. The high-level
integration and low cost of the MAX6516 and MAX6518
facilitate the use of multiple temperature monitors to
increase system reliability. The application in Figure 3
uses two MAX6516s with different hot temperature
thresholds to ensure that fault conditions that can
overheat the monitored device cause no permanent
damage. The first temperature monitor activates the fan
when the die temperature exceeds +45°C. The second
MAX6516 triggers a system shutdown if the die
temperature reaches +75°C, preventing damage from
a wide variety of destructive fault conditions, including
latchups, short circuits, and cooling-system failures.
PC Board Testing
The MAX6516–MAX6519 temp sensor devices can be
tested after PC board assembly using OUT. Testing
can be used to verify proper assembly and functionality
of the temperature protection circuitry. Since OUT has
a weak drive capability, the voltage at OUT can be
forced to cause the digital outputs to change states,
thereby verifying that the internal comparators and out-
put circuitry function properly after assembly. Below is
a test procedure that can be used to test the
MAX6516–MAX6519:
Power up the device, measure OUT, and observe the
state of the logic output.
Low-Cost, 2.7V to 5.5V, Analog Temperature
Sensor Switches in a SOT23
6
_______________________________________________________________________________________
MAX6516UKP075
VCC
HYST
GND
TOVER
TUNDER
MAX6516UKN005
VCC
HYST
GND
5V
OVERTEMP
UNDERTEMP
OUT OF RANGE
OUT
Figure 1. Temperature-Window Alarms Using the MAX6516
MAX6517UKP075
MAX6517UKN005
VCC
GND
TUNDER
VCC
5V
GND
HYST
OUT
TOVER
OUT
100k
OUT OF RANGE
Figure 2. Temperature Window Alarm Using the MAX6517
MAX6516UKP075
GND
5V
HYST
OUT
TOVER
SYSTEM
SHUTDOWN
VCC
MAX6516UKP045
GND
OUT
TOVER
FAN CONTROL
VCC
HYST
GND
P
HEAT
Figure 3. Low-Power, High-Reliability, Fail-Safe Temperature
Monitor
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