MCP9701T-E/LT Microchip Technology, MCP9701T-E/LT Datasheet - Page 10

• Manufacturer Part Number: MCP9701T-E/LT
• Description: IC SENSOR THERMAL 3.1V SC70-5
• Manufacturer: Microchip Technology
• Series: Linear Active Thermistor™r

Specifications of MCP9701T-E/LT

• Package / Case: 6-TSSOP (5 lead), SC-88A, SOT-353
• Output Type: Voltage
• Sensing Temperature: -40°C ~ 125°C
• Voltage - Supply: 3.1 V ~ 5.5 V
• Accuracy: ±2°C
• Full Temp Accuracy: 6 C
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 3.1 V
• Description/function: Tiny 19.53 mV/deg C Analog
• Gain: 19.5 mV / C
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 10 C
• Supply Current: 12 uA
• Ic Output Type: Voltage
• Sensing Accuracy Range: ± 2°C
• Supply Voltage Range: 3.1V To 5.5V
• Sensor Case Style: SC-70
• No. Of Pins: 5
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Temperature Sensing Range: -40°C To +125°C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: MCP9701T-E/LTTR

MCP9700/01
4.4
The MCP9700/01 measures temperature by monitor-
ing the voltage of a diode located in the die. A low
impedance thermal path between the die and the PCB
is provided by the pins. Therefore, the MCP9700/01
effectively monitors the temperature of the PCB.
However, the thermal path for the ambient air is not as
efficient because the plastic device package functions
as a thermal insulator from the die. This limitation
applies
sensors. If the application requires measuring ambient
air, the PCB needs to be designed with proper thermal
conduction to the sensor pins.
The MCP9700/01 is designed to source/sink 100 µA
(max.). The power dissipation due to the output current
is relatively insignificant. The effect of the output
current can be described using Equation 4-2.
EQUATION 4-2:
At T
tion of I
the self-heating due to power dissipation (T
0.179°C.
DS21942A-page 10
Where:
T
T
θ
V
I
I
V
OUT
DD
A
JA
J
OUT
DD
A
T
= +25°C (V
J
–
DD
= Junction Temperature
= Ambient Temperature
= Package Thermal Resistance (331°C/W)
= Sensor Output Voltage
= Sensor Output Current
= Operating Current
= Operating Voltage
Thermal Considerations
T
to
A
= 12 µA, V
=
plastic-packaged
θ
JA
OUT
(
V
= 0.75V) and maximum specifica-
DD
DD
EFFECT OF SELF-
HEATING
I
DD
= 5.5V and I
+
(
V
DD
silicon
–
V
OUT
OUT
temperature
)
= +100 µA,
I
OUT
J
– T
)
A
) is
© 2005 Microchip Technology Inc.