Datasheet 搜索 > 湿度传感器 > TI（德州仪器） > TMP300BIDCKR 数据手册 > TMP300BIDCKR 用户编程技术手册 6/14 页
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TMP300BIDCKR 用户编程技术手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
湿度传感器
封装:
SC-70-6
描述:
1.8V ，电阻可编程温度开关与模拟输出温度传感器，SC70 1.8V, Resistor-Programmable TEMPERATURE SWITCH and ANALOG OUT TEMPERATURE SENSOR in SC70
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TMP300BIDCKR数据手册
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APPLICATIONS INFORMATION
R =
SET
(T 0.01+0.5)´
SET
3e
-6
(1)
CALCULATING R
SET
R ink =W
SET
10(50+T )
SET
3
(2)
USING V
TEMP
TO TRIP THE DIGITAL OUTPUT
R
INT
210kW
R
SET
T
SET
OUT
V+
HYST
SET
V
TEMP
TMP300
3 Am
Proportional
toT
A
Open-DrainControl
Voltagesource
totesttrippoint.
TMP300
SBOS335A – JUNE 2005 – REVISED SEPTEMBER 2007
To set the TMP300 to trip at a preset value, calculate
The TMP300 is a thermal sensor designed for
the R
SET
resistor value according to Equation 1 or
over-temperature protection circuits in electronic
Equation 2 :
systems. The TMP300 uses a set resistor to program
the trip temperature of the digital output. An additional
high-impedance (210k Ω ) analog voltage output
provides the temperature reading.
Where T
SET
is in ° C; or
The set resistor (R
SET
) provides a threshold voltage
for the comparator input. The TMP300 trips when the
Where T
SET
is in ° C.
V
TEMP
pin exceeds the T
SET
voltage. The value of the
set resistor is determined by the analog output
function and the 3 μ A internal bias current.
The analog voltage output can also serve as a
voltage input that forces a trip of the digital output to
simulate a thermal event. This simulation facilitates
easy system design and test of thermal safety
circuits, as shown in Figure 8 .
Figure 8. Applying Voltage to Trip Digital Output
6 Submit Documentation Feedback Copyright © 2005 – 2007, Texas Instruments Incorporated
Product Folder Link(s): TMP300
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