Latch Type Hall Sensor AH4158

◆ Features

Rated working voltage 4.5 V ~ 24 V, the limit voltages as low as 3.5 V;

Operating temperature range: -55℃ ~ 150℃;

Rated output current (sink) : 300 mA, it can directy drive the coils of DC motor (Fan );

Special design make the sensor owns imunity to logic race condition, short switch time and good switch sensitivity;

No mechanical contact, no spark, switch signal stability, no shaking moment, high reliability and safety;

Products meet the EU RoHS instruction 2011/65 / EU and REACH regulations 1907/2006 / EU requirements.

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PRODUCTS DETAILS

◆ Outline

AH4158 unipolar two ends complementary output switch type Hall Sensor, when the “S” pole faces the sensor’s mark surface and is closed to sensor (B≥Bop），output terminal VO1 outputs low level, and the output terminal VO2 outputs high level; when the magnet is far away from the sensor （B≤Brp），output terminal VO1 outputs high level, the output terminal VO2 output low level. Stable hysteresis （Bh= Bop- Brp） ensures stable switch status, The magnetic and electric transfer characteristic curve of AH4158 is shown as the figure:

◆ Block Diagram

AH4158 Hall Sensor is a kind of unipolar field excitation two ends complementary output switch type Hall IC. Complementary output Hall sensor is particularly suitable for double coil DC motor, double coil DC fan, speed measurement and rotation control. The sensor chip intergrated bandgap reference voltage source, Hall voltage generator, signal amplifier, hysteresis controller, reverse voltage protection diode, and two way complementary output open collector output driver which sink current reaches 300mA and so on circuit unit. Excellent bandgap reference voltage source ensures the sensor can keep concordant sensitivity in a wide temperature range. Reverse voltage protection diode can avoid reverse power failure.

◆ Limit Parameter

Parameter	Symbol	Min.	Max.	Unit
Storage Temp.	Ts	-55	150	℃
Supply Voltage	VCC	3.5	28	V
Output Cut-off Voltage	VO（off）	—	25	V
Magnetic Induction	B	unlimited	unlimited	mT
Output Current	IO	—	500	mA

◆ Electrostatic Grade

Under human being mode, the Electrostatic compression is large than ±6kV.

◆ Operating Condition

Parameter	Symbol	Min.	Max.	Unit
Supply Voltage	VCC	4.5	24	V
Operating Temp.	Ta	-25	85	℃
Output Current	IO	—	300	mA

◆ Electrical Characteristc

Paramater	Symbol	Test Condition	Typ.	Max	Unit
Output Low Level	VOL	VCC1=4.5， VCC2=24V， IO=25mA，B≥BOP	0.2	0.4	V
Output High Level	VOH	VCC1=4.5， VCC2=24V， IO=25mA，B≤BRP	23.5	24	V
Output Leakage Current	IOH	VCC2=24V，VCC1 open circuit	0.1	10	μA
Supply Current	ICC	VCC1=24V，Vo open circuit	6	12	mA
Output Rise Edge Time	tR	VCC1=VCC2=12V， RL=1.2kΩ， CL=20pF	125	150	ns
Output Fall Edge Time	tF	VCC1=VCC2=12V， RL=1.2kΩ， CL=20pF	60	80	ns

◆ Magnetic Characteristic

Test condition：VCC1 = VCC2 =24V，IO = 50mA

Parameter	Symbol	Min.	Typ.	Max.
Operate Point	BOP	—	10	20
Release Point	BRP	3	5	—
Hysteresis ∣Operate point-Release point∣	BH ∣BOP-BRP∣	3	-	16

Note 1: Unit is mT, 1mT=10Gs.

Note 2: When the “S” Pole of the magnetic field is vertical to the front mark of product, we call the magnetic field B＞0.

◆ Package Outline

TO-92UA/TO-92S Package outline（unit: mm）

Note: In the above package outline figure, Pin 1: Vcc, Pin 2: GND, Pin 3: Output terminal.

Mark

Mark “XX” or “AHXX” are abbreviation form of the parts No.

Hall Effect Sensor Manufacturer-Nanjing AH Electronic Science & Technology Co., Ltd.

Latch Type Hall Sensor AH4158