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參數(shù)資料
| 型號： | L4620 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDIP8 |
| 封裝： | MINI, DIP-8 |
| 文件頁數(shù)： | 1/9頁 |
| 文件大小： | 185K |
| 代理商： | L4620 |
December 1999
L4620
LIQUID LEVEL ALARM
.
DRIVES DIRECTLY 300 mA ALARM LOAD
.
PROGRAMMABLE INPUT POLARITY TO
ACTIVATE THE OUTPUT STAGE
.
PROGRAMMABLE DELAY TIME
.
PROGRAMMABLE OUTPUT DUTY CYCLE
.
OUTPUT SHORT CIRCUIT PROTECTION
.
OVERVOLTAGE AND THERMAL
PROTECTION
DESCRIPTION
The L4620 is an integrated circuit, designed for the
liquid level control in automotive applications. The
liquid level is indicated by an attenuation between
transmitted and received signal across a sensor tip
in the lquid. If the attenuation exceedes an internal
threshold - sensor tip outside the liquid or liquid tem-
perature higher than a determined value - a square-
wave alarm output indicates an unsufficient liquid
condition. If the liquid level is restored before the end
of a delay time the alarm is not activated.
Through two pins it is possible to program : the delay
time to activate the alarm, the duty cycle of the
output squarewave, the polarity of the input thre-
shold of the sensor for alarm activation.
The above features make the L4620 particularly ver-
satile for many applications and give the possibility
to use various sensor types.
Internal circuits prevent spurious indications from
the liquid sensor and a latch keeps the alarm acti-
vated until the supply voltage is switched off. The de-
vice includes thermal shutdown protections.
Minidip
ORDERING NUMBER : L4620
BLOCK DIAGRAM
1/9
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
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| L-466 | 制造商:RHOMBUS-IND 制造商全稱:Rhombus Industries Inc. 功能描述:TOROID INDUCTOR |
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