Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details. SIP-3 (Ammo)

Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details. SIP-3 (Bulk)

Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details. SOT23 (Type S)

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AH3524A

High-Voltage High-Sensitivity Hall-Effect Omnipolar Switch With Internal Pullup Resistor

Datasheet

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Description

The AH3524A is a high-voltage high-sensitivity Hall-effect Omnipolar switch IC designed for proximity, position and level sensing in industrial and consumer home appliances and personal care applications. To support the wide range of the demanding applications, the design has been optimized to operate over the supply range of 3.0V to 28V. With chopper stabilized architecture and an internal bandgap regulator to provide temperature compensated supply for internal circuits, the AH3524A provides a reliable solution over the whole operating range. For robustness and protection, the device has a reverse blocking diode with a Zener clamp on the supply. The output has an overcurrent limit and a Zener clamp.

The internally pulled-up output can be switched on with either South or North pole of sufficient strength. When the magnetic flux density (B) perpendicular to the package is larger than the operate point (B_OP) the output is switched on (pulled low) and is held on until magnetic flux density B is lower than the release point (B_RP).

Feature(s)

Omnipolar Operation
High Sensitivity: B_OP and B_RP of ±40G and ±25G Typical
Internally Pullup Resistor on the Output with Overcurrent Limit
0V to 28V Operating Voltage Range
Resistant to Physical Stress
Chopper Stabilized Design Provides
- Superior Temperature Stability
- Minimal Switch Point Drift
- Enhanced Immunity to Stress
Good RF Noise Immunity
Zener Clamp on Supply and Output Pins
-40°C to +125°C Operating Temperature
High ESD HBM: 8kV
Industry Standard SOT23 (Type S), SIP-3 (Ammo Pack) and SIP-3 (Bulk Pack) Packages
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/

Application(s)

Position and proximity sensing in industrial applications
Open and close detection
Position detection
Level detection
Flow meters
Contactless switches

Specifications & Technical Documents

Product Parameters

Compliance (Only Automotive Supports PPAP)	Standard
Operating Ambient Temperature (°C)	-40 to 125
AEC Qualified	No
Type	Omnipolar
Outputs	Single
Output Type	Pull-Up Resistor
Active Output State (B > Bop)	Low
Inactive Output State (B < Brp)	High
Key Feature	Resistant to Physical Stress
Operating Voltage (V)	3 to 28
Average Supply Current (mA)	3
Min Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss)	20
Typ Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss)	40
Max Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss)	60
Min Release Point Brp (Brps +ve/ Brpn -ve) (Gauss)	10
Typ Release Point Brp (Brps +ve/ Brpn -ve) (Gauss)	25
Max Release Point Brp (Brps +ve/ Brpn -ve) (Gauss)	45
Output Current Capability (mA)	30

Technical Documents

Recommended Soldering Techniques

TN1.pdf

Purchase & Availability

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Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN #	Issue Date	Implementation Date	Subject
PCN-2770	2025-10-30	2025-10-30	Add Fab Site Code, Country of Diffusion (COD) and Assembly Site Origin (ASO) on Product and Shipping Labels for all Diodes Products