LM56 National Semiconductor, LM56 Datasheet - Page 2
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LM56
Manufacturer Part Number
LM56
Description
Dual Output Low Power Thermostat
Manufacturer
National Semiconductor
Datasheet
1.LM56.pdf
(13 pages)
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Typical Application
V
V
where:
(R1 + R2 + R3) = 27 k
V
R1 = V
R2 = (V
R3 = 27 k
T1
T2
T1 or T2
= 1.250V x (R1)/(R1 + R2 + R3)
= 1.250V x (R1 + R2)/(R1 + R2 + R3)
T1
T2
/(1.25V) x 27 k
= [6.20 mV/˚C x T] + 395 mV therefore:
/(1.25V) x 27 k ) − R1
− R1 − R2
and
FIGURE 1. Microprocessor Thermal Management
2
DS012893-3