F75373S datasheet(13/49 Pages) FINTEK

Part #	F75373S

Description	Fintek Hardware Monitor IC Datasheet

Download	49 Pages

Scroll/Zoom	100%

Manufacturer	FINTEK [Feature Integration Technology Inc.]

Direct Link	http://www.fintek.com.tw/eng

Logo

13 / 49 page

Fintek

Feature Integration Technology Inc.

V0.25P

8

F75373

FAN Out

+5V

GND

Pull-up resister

4.7K Ohms

+5V

Fan Input

FANIN1

F75373S

1K~2.7K

10K

FAN

Connector

FAN Out

+5V

GND

Pull-up resister < 1K

or totem-pole output

+5V

Fan Input

FANIN1

F75373S

> 1K

.Figure 5-8 Fan with Tach Pull-Up to +5V, or

Totem-Pole Putput and Zener Clamp

3.3V Zener

Figure 5-7. Fan with Tach Pull-Up to +5V, or Totern-Pole

Output and Register Attenuator

Determine the fan counter according to:

RPM

Count

6

10

5

.

1

×

=

In other words, the fan speed counter has been read from register, the fan speed can be evaluated by the following equation. As

for fan, it would be best to use 2 pulses tachmeter output per round.

Count

RPM

6

10

5

.

1

×

=

5.4.2

Fan speed control

The F75373S provides 2 fan PWM speed control. The duty cycle of PWM can be programmed by a 8-bit register which are

defined in the CR76h and CR86h. The default duty cycle is set to 100%, that is, the default 8-bit registers is set to FFh. The

expression of duty can be represented as follows.

%

100

255

Value

Register

bit

-

8

Programmed

(%)

Duty_cycle

×

=

+12V

FAN

R1

R2

NMOS

PNP Transistor

C

+

-

PWM Clock Input

D

S

G

+5V

FAN

R1

R2

NMOS

PNP Transistor

C

+

-

PWM Clock Input

D

S

G

Figure 5-9

Figure 5-10

Similar Part No. - F75373S

Manufacturer	Part #	Datasheet	Description
Feature Integration Tec...	F75375S	1Mb / 55P	Fintek Hardware Monitor IC Datasheet
	F75375SG	1Mb / 55P	Fintek Hardware Monitor IC Datasheet
	F75377	1Mb / 66P	H/W Monitor IC with Automatic Fan Speed Control
	F75377R	1Mb / 66P	H/W Monitor IC with Automatic Fan Speed Control

More results

Similar Description - F75373S

Manufacturer	Part #	Datasheet	Description
Feature Integration Tec...	F75375S	1Mb / 55P	Fintek Hardware Monitor IC Datasheet
Feature Integration Tec...	F72603R	196Kb / 22P	Fintek ACPI Controller IC Datasheet
Nuvoton Technology Corp...	NCT6686D	4Mb / 287P	HARDWARE DATASHEET(External Architecture)
Texas Instruments	LM96194	1Mb / 102P	[Old version datasheet] TruTherm Hardware Monitor
SMSC Corporation	EMC1103	331Kb / 3P	SST Compliant Hardware Monitor
ADL Embedded Solutions	ADLQM67PC-3517UE	877Kb / 3P	Hardware monitor with api
ADL Embedded Solutions	ADLQM67PC	829Kb / 3P	hardware monitor with api
National Semiconductor ...	LM79	481Kb / 31P	Microprocessor System Hardware Monitor
National Semiconductor ...	LM78	424Kb / 31P	Microprocessor System Hardware Monitor
SMSC Corporation	EMC1102	231Kb / 3P	SST Compliant Hardware Monitor

More results

F75373S Datasheet(PDF) 13 Page - Feature Integration Technology Inc.

F75373S Datasheet(HTML) 13 Page - Feature Integration Technology Inc.

Similar Part No. - F75373S

Similar Description - F75373S

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49

Datasheet Download

Link URL