Rainbow-electronics MAX6670 Instrukcja Użytkownika Pobierz pdf (Strona 6)

MAX6668/MAX6670

other traces carrying high-frequency noise signals

does not help reduce EMI.

The MAX6668/MAX6670s’ PGND is the ground return

for the fan driver. Bypass V

to GND with a 1µF

capacitor located as close to V

as possible. Add

additional bypass capacitors for long V

and GND

lines.

Chip Information

TRANSISTOR COUNT: 8113

PROCESS: BiCMOS

Remote Temperature Switches with Integrated

Fan Controller/Driver

6 _______________________________________________________________________________________

GND

DXP

DXN

GND

10MILS

MINIMUM

10MILS

Figure 2. Recommended DXP/DXN PC Traces

TRIP TEMPERATURE

– HYSTERESIS

TIME

MAX6668

MAX6670

FANOUT

Figure 1. Temperature Trip Threshold Hysteresis

DXP

GND

PGND

HYST

+4.5V TO +12V

MAX6670

FORCEON

FANOUT

WARN

DXN

+3V TO +3.6V

CPU

Typical Operating Circuit

GNDDXN

FANOUT

GNDFORCEON

DXP

PGND

µMAX

TOP VIEW

MAX6668

FANOUT

HYST

GNDDXN

DXP

PGND

MAX6670

µMAX

OTFORCEON

WARN

Pin Configurations

1 2 3 4 5 6 7 8

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