LM88 National Semiconductor, LM88 Datasheet - Page 8

• Manufacturer Part Number: LM88
• Description: Factory Programmable Dual Remote-Diode Thermostat
• Manufacturer: National Semiconductor

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2.0 Application Hints
8. The ideal place to connect the LM88’s GND pin is as
9. Leakage current between D+ and GND should be kept
3.0 Applications Circuits
close as possible to the processor GND associated with
the sense diode.
to a minimum. One nano-ampere of leakage can cause
FIGURE 5. Pentium processor Thermal Management with Fan Control
(Continued)
FIGURE 6. Card Bus Thermal Management
FIGURE 4. Ideal Diode Trace Layout
8
as much as 1˚C of error in the diode temperature read-
ing. Keeping the printed circuit board as clean as pos-
sible will minimize leakage current.
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