Datasheet > F75387SG

F75387SG

更新时间： 2022-12-18 12:31:49

品牌	Logo	应用领域
精拓 - FINTEK		风扇监控
页数	文件大小	规格书
48页	1165K
描述
±1oC Accuracy H/W Monitor IC with Automatic Fan Speed Control

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F75387SG 数据手册

F75387

1. General Description

F75387 is a system hardware monitoring and automatic fan speed controlling IC specific designed

for graphic cards and PC etc. The F75387 can monitor several critical hardware parameters of the

system, including voltages, temperatures and fan speeds which are very important for the system

to work stably and properly.

An 11-bit analog-to-digital converter (ADC) was built inside F75387. The chip can monitor up to 4

analog voltage inputs, 2 fan tachometer inputs and 3 temperature inputs (2 remote and 1 local

sensor). The remote temperature sensor can be performed by thermistor, transistor 2N3906 and

CPU/GPU thermal diode. The F75387 can provide automatic fan speed control so that the system

can operate at the minimum acoustic noise. This chip supports not only PWM duty mode

(PWMOUT) but also linear mode (DACOUT 0 ~ 3.3V) for fan speed control. Internal oscillator was

built in this chip and user can use external clock input if users need accurate fan speed count. Also

the users can set up the upper and lower limits (alarm thresholds) of all monitored parameters and

the F75387 can also issue warning messages for system protection when there is something

wrong with monitored items.

Through the BIOS or application software, the users can read all the monitored parameters of

system all the time. And a pop-up warning can be also activated when the monitored item was out of the

proper/pre-setting range. The F75387 is in the package of 16-pin SOP/SSOP and powered by 3.3V

2. Features

4 voltage inputs

Provide 2 remote and 1 on-chip local temperature sensor

Up to 2 fan speed monitoring inputs and 2 automatic fan speed control

Power on fan speed configuration

100% or 60% PWM duty cycle output on initial

3.3V or 1.98V DAC linear voltage output on initial

Provide up to 4 system protection signals

OVT#, SMI#, FAN_FAULT#, VOLT_FAULT# signals

Programmable limited and setting points(alert threshold) for all monitored items

2-wire SMBus interface

V_CC3V operation and 16-SOP/SSOP package(150mil)

Noted: Patented TW207103 TW207104 TW220442 US6788131 B1 TW235231 TWI263788

July, 2007

0.27P

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