L4620 STMicroelectronics, L4620 Datasheet
L4620
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L4620 Summary of contents
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... 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 ...
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... L4620 ABSOLUTE MAXIMUM RATINGS Symbol I Supply Current (V > Sensor Input Voltage (V High Output Current out P Power Dissipation at T tot amb Junction and Storage Temperature Range j stg PIN CONNECTION (top view) THERMAL DATA Symbol R Thermal Resistance Junction-ambient th j-amb 2/9 Parameter = 70 C Parameter ...
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... If the input voltage becomes higher than the above 0.22V (typ), providing an hysteresis available with SENSL 2 and C . Using the recommended values of block diagram th osc osc . When the voltage at this pin is high the output SENS L4620 connected to pin 5 (supply osc = 0.693 osc , the SENSH 3/9 ...
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... L4620 ELECTRICAL CHARACTERISTICS (T for external component values) Symbol Parameter V Internal Zener Voltage (pin Supply Current (pin Oscillator Frequency (pin 1) osc Programming Pins Input 7 8 Voltage (pin Programming Pins Input Current 7 8 (pin Sensor Drive Output Voltage, (*) Sensor Driver Output Current Sensor Input High Threshold ...
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... CIRCUIT OPERATION The L4620 liquid level alarm is designed to operate with a variety of sensor types which change imped- ance depending on whether the sensor is above or below the level of a liquid. If the impedancevariation of ther liquid itself is sensed, a very simple sensor (two electrodes) can be used. The output stage ...
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... L4620 SENSOR INPUT WAVEFORM Figure 1a : Pin 8 Low ; Alarm with Input Voltage > Threshold. Figure 1b : Pin 8 High ; Alarm with Input Voltage < Threshold. 6/9 ...
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... Figure 2a : OutputAlarm Waveform with Pin 8 High : t = Figure 2b : OutputAlarm Waveform with Pin 8 Low : L4620 7/9 ...
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... L4620 mm DIM. MIN. TYP. MAX. MIN. A 3.32 a1 0.51 0.020 B 1.15 1.65 0.045 b 0.356 0.55 0.014 b1 0.204 0.304 0.008 D 10.92 E 7.95 9.75 0.313 e 2.54 e3 7.62 e4 7.62 F 6.6 I 5.08 L 3.18 3.81 0.125 Z 1.52 8/9 inch OUTLINE AND MECHANICAL DATA TYP. MAX. 0.131 0.065 ...
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... The ST logo is a registered trademark of STMicroelectronics 1999 STMicroelectronics – Printed in Italy – All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A. http://www.st.com L4620 9/9 ...