se98pw NXP Semiconductors, se98pw Datasheet - Page 21

• Manufacturer Part Number: se98pw
• Description: Se98 So-dimm Smbus/i2c-bus Temperature Sensor
• Manufacturer: NXP Semiconductors

NXP Semiconductors
10. Limiting values
SE98_2
Product data sheet
9.2 Layout consideration
9.3 Thermal considerations
T
The SE98 does not require any additional components other than the host controller to
measure temperature. A 0.1 F bypass capacitor between the V
located as close as possible to the power and ground pins for noise protection.
In general, self-heating is the result of power consumption and not a concern, especially
with the SE98, which consumes very low power. In the event the SDA and EVENT pins
are heavily loaded with small pull-up resistor values, self-heating affects temperature
accuracy by approximately 0.5 C.
Equation 1
where:
Table 22.
In accordance with the Absolute Maximum Rating System (IEC 60134).
[1]
Symbol
V
V
V
I
V
T
T
sink
j(max)
stg
DD
n
A0
esd
T = T
T
T
R
V
V
I
I
OL1
OL2
=
j
amb
OL1
OL2
th(j-a)
In general, application of 10 V on the A0 pin would not damage the pin, but NXP Semiconductors does not
guarantee the overvoltage for this pin.
= junction temperature
R
= SDA output current LOW
= EVENT output current LOW.
th j-a
= ambient temperature
= SDA output low voltage
= EVENT output low voltage
= package thermal resistance
j
Parameter
supply voltage
voltage on any other pin
voltage on pin A0
sink current
electrostatic discharge
voltage
maximum junction
temperature
storage temperature
Limiting values
is the formula to calculate the effect of self-heating:
T
amb
V
DD
Rev. 02 — 7 January 2008
I
DD
+
V
OL1
Conditions
SDA, SCL, EVENT pins
overvoltage input; A0 pin
at SDA, SCL, EVENT pins
HBM
MM
CDM
I
OL1
SO-DIMM SMBus/I
+
V
OL2
I
OL2
2
C-bus temperature sensor
DD
Min
-
-
-
-
0.3
0.3
0.3
1
65
and V
© NXP B.V. 2008. All rights reserved.
SS
Max
+4.2
+4.2
+10
+50.0
2500
250
1000
150
+165
pins is
SE98
21 of 32
Unit
V
V
V
mA
V
V
V
C
C
(1)