Datasheet > A5219

A5219

更新时间： 2024-10-28 22:26:43

品牌	Logo	应用领域
其他 - ETC		风扇监控
页数	文件大小	规格书
1页	62K
描述
Supervisor IC indicates fan failure

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A5219 数据手册

DESIGN SHOWCASE

Supervisor IC indicates

fan failure

The brushless DC fans found in many types of

change state within a watchdog timeout period, U1

lights the LED by asserting its reset output. As a

result, the LED pulses on and off as the supervisor

goes through its watchdog/reset cycle. The LED in

this example has a 200ms on-time and flashes with a

period of 1.6s, which is suitable for most purposes.

equipment can be crucial to the performance and

longevity of that equipment. A quick indication of fan

failure, moreover, can be essential in preventing major

damage. Among the many approaches for identifying

and indicating stalled fans, the circuit of Figure 1 is

very simple and reliable.

The fan’s tachometer output connects to the watchdog

input of a µP supervisor (U1). The LED remains off

during normal operation. If the tachometer does not

A similar article appeared in the November, 2003

issue of EET.

+5V

20kΩ

300Ω

MAX6316

RES

GND

WDI

TACH

Figure 1. The MAX6316 µP supervisor monitors a fan’s tachometer output.

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型号	品牌	获取价格	描述	数据表
A-5219-09B	MOLEX	获取价格	2.36mm (.093") Diameter Standard .093" Pin and Socket Header, Vertical, with Beveled Plast
A-521E	ETC	获取价格	SINGLE DIGIT DISPLAY
A-521E-N-EP-A	PARALIGHT	获取价格	0.52 INCH SINGLE DIGIT DISPLAY
A-521G	ETC	获取价格	SINGLE DIGIT DISPLAY
A-521H	ETC	获取价格	SINGLE DIGIT DISPLAY
A521RHI	MPD	获取价格	Very High Isolation, 5W Single & Dual Output DC/DC Converters
A521RW	MPD	获取价格	Wide Input Range, 5W Single & Dual Output DC/DC Converters
A-521SR	ETC	获取价格	SINGLE DIGIT DISPLAY
A-521SR-A	PARALIGHT	获取价格	0.52 INCH SINGLE DIGIT DISPLAY
A-521Y	ETC	获取价格	SINGLE DIGIT DISPLAY