Model Number

OH3144

OH3144 Hall-effect switch integrated circuits

General Description

OH3144 Hall-effect switch integrated circuits for high temperature operating based on Hall-effectprinciple, apply the semiconductor monolithic technology, which includes a voltage regulator, Hall voltage generator, differential amplifier, Schmitt trigger and an open-collector output on a single silicon chip. ICs can convert the input magnetic field signal into digital voltage output

Features
Small size
High Sensitivity
Quick Response
Good Temperature Performance
High Accuracy
Excellent Reliability

Typical applications
Non-contact Switch
Automotive Ignition
Brake ICs
Position control
Revolution detection
Safe alarm device
Textile control system

Absolute Maximum Rating
Supply Voltag
V_{CC렁렁렁렁렁렁렁�} 28V
Quiescent Output Voltage
Vo_{렁렁렁렁렁렁렁렁}28V
Output Current
I_{O렁렁렁렁렁렁렁렁}25mA
Operating Temperature Range
T_{A렁렁렁렁렁렁} -20～85 °C
Storage Temperature Range
T_{S 렁렁렁렁렁렁렁}-65～150°C

Electrical Characteristics

Parameter	Test Condition	Symbol	＆#118alue			Unit
			Min	Typ	Max
Supply Voltage	Vcc=4.5V ～ 24V	V CC	4.5	-	24	V
Output Low Voltage	Vcc=4.5v, Vo=24V Io=20mA, B ≥ B OP	V OL	-	175	400	mV
Output Leakage Current	Vo=24V, B<B RP	I OH	-	<1.0	10	µ A
Supply Current	Vcc=24V Vo open-collector output	Icc	-	3.0	9.0	mA
Output Rise time	Vcc=12V R L =820 Ω C L =20pF	tr	-	0.2	2.0	µ S
Output Fall time		tf	-	0.18	2.0	µ S

Magnetic Characteristics (Unit: mT)

Parameter	symbol	＆#118alue			Unit
		Min	Typ	Max
Operate Point (B OP )	BOP	1.0	-	20.0	mT
Release Point (B RP )	BRP	3.0	-	14.0
Hysteresis (B H )	Bhys	4.0	8.0	-