MCP9509C MICROCHIP [Microchip Technology], MCP9509C Datasheet - Page 17

• Manufacturer Part Number: MCP9509C
• Description: Resistor-Programmable Temperature Switches
• Manufacturer: MICROCHIP [Microchip Technology]

For example, at room temperature, when output
asserts Active-Low and maximum I
V
cation table), the self heating due to power dissipation
(T
4.6.2
The OUTSET pin can be controlled using a Microcon-
troller input/output (I/O) pin. I/O levels HIGH and LOW
provide push-pull configuration with Active-High and
Active-Low outputs, respectively. The Open-Drain
output with internal pull-up resistor can be selected by
configuring the I/O pin as a High-Impedance Input. The
Open-Drain output can also be selected by forcing volt-
age level V
this configuration, there maybe some leakage current
due to impedance mismatch, (See
© 2008 Microchip Technology Inc.
DD
J
- T
= 5.5V, V
A
) is ~0.4°C.
OSET
DRIVING OUTSET WITH A
MICROCONTROLLER I/O PIN
OL
= 0.3V and I
from a low impedance source. With
OUT
= 5 mA (see specifi-
Figure
DD
4-2).
= 50 µA,
4.6.3
The MCP9509/10 family of sensors are designed to
prevent false output trigger due to high frequency
power supply or system noise.
device performance with a high frequency signal added
on V
added on V
recommended to add a bypass capacitor of 0.1 µF to
1 µF.
FIGURE 4-7:
(PSR).
DD
6
5
4
3
2
1
0
10
. The output is not triggered due to the signal
No False Trigger
MCP9509/10 Power Supply Rejection
V
V
DD
DD
POWER SUPPLY REJECTION
= 5V + 400mV
= 5V + 400mV
100
DD
. With some applications, it is
10 00
AC
SQR
MCP9509/10
Frequency (Hz)
Power Supply Rejection
10 000
10 000 0
Figure 4-7
DS22114A-page 17
10 000 00
shows
10 000 000