LM60BIM3 National Semiconductor, LM60BIM3 Datasheet - Page 7

• Manufacturer Part Number: LM60BIM3
• Description: Temperature Sensor IC
• Manufacturer: National Semiconductor

Specifications of LM60BIM3

• Peak Reflow Compatible (260 C): No
• Ic Function: Temperature Sensor IC
• Supply Voltage: 2.7V
• Supply Voltage Max: 10V
• Leaded Process Compatible: No
• Mounting Type: Surface Mount
• Supply Voltage Min: 2.7V
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

1.0 Mounting
*-Part soldered to 30 gauge wire.
**-Heat sink used is
***-Part glued or leads soldered to 1” square of 1/16” printed circuit board with 2 oz. foil or similar.
2.0 Capacitive Loads
The LM60 handles capacitive loading well. Without any spe-
cial precautions, the LM60 can drive any capacitive load as
shown in Figure 4. Over the specified temperature range the
LM60 has a maximum output impedance of 800Ω. In an
extremely noisy environment it may be necessary to add
some filtering to minimize noise pickup. It is recommended
that 0.1 µF be added from +V
supply voltage, as shown in Figure 5. In a noisy environment
it may be necessary to add a capacitor from the output to
ground. A 1 µF output capacitor with the 800Ω output imped-
ance will form a 199 Hz lowpass filter. Since the thermal time
constant of the LM60 is much slower than the 6.3 ms time
constant formed by the RC, the overall response time of the
LM60 will not be significantly affected. For much larger ca-
pacitors this additional time lag will increase the overall
response time of the LM60.
FIGURE 4. LM60 No Decoupling Required for
Still air
Moving air
1
Capacitive Load
⁄
2
" square printed circuit board with 2 oz. foil with part attached as shown in Figure 2 .
(Continued)
(˚C/W)
θ
450
no heat sink
JA
SOT-23*
S
to GND to bypass the power
T
0.17
J
(˚C)
− T
FIGURE 3. Temperature Rise of LM60 Due to
Self-Heating and Thermal Resistance (θ
A
(˚C/W)
θ
260
180
small heat fin
JA
SOT-23**
01268115
T
J
0.07
(˚C)
0.1
− T
7
A
FIGURE 5. LM60 with Filter for Noisy Environment
θ
180
90
JA
no heat fin
TO-92*
T
JA
0.034
J
0.07
)
− T
A
θ
140
small heat fin
70
JA
TO-92***
T
0.026
J
0.05
− T
A
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01268116