Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details. SC59

TO92S (Type B)

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AH9247

Micropower Omnipolar Hall Effect Switch

Datasheet

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Description

The AH9247 is a high sensitivity Hall-effect switch with internal pullup resistor on the output, designed for battery-operation, handheld equipment.

A chopper stabilized amplifier improves stability of magnetic switch points. A sleep-awake logic controls the IC in sleep time or awake time. This function will reduce the average operating current of the IC. During the awake time, the output is changed with the magnetic flux density. During the sleep time, the output is latched in its previous state and the current consumption will reduce to some µA.

The output can be switched on with either north or south pole of sufficient strength. If the magnetic flux density perpendicular to the part marking surface is larger than operating point (B_OP), the output will be turned on; if it is less than releasing point (B_RP), the output will be turned off.

The AH9247 is available in TO92S (TYPE B), SC59 and DFN-2X2-3 packages which are optimized for most applications.

Feature(s)

Micropower Operation
5V to 5.5V Power Supply
Switching for Both Poles of a Magnet (Omnipolar)
Stabilized Chopper
Superior Temperature Stability
Digital Output Signal
Built-in Pullup Resistor
ESD (HBM): 6000V
Small Low Profile DFN-2X2-3, Industry-Standard SC59 and TO92S (TYPE B) 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)

Cover switches in notebook PC/PDA
Handheld wireless application awake switches
Magnet switches in low duty-cycle applications

Specifications & Technical Documents

Product Parameters

Compliance (Only Automotive Supports PPAP)	Standard
Operating Ambient Temperature (°C)	-40 to 85
AEC Qualified	No
Type	Omnipolar
Outputs	Single
Output Type	Pull-Up Resistor
Active Output State (B > Bop)	Low
Inactive Output State (B < Brp)	High
Operating Voltage (V)	2.5 to 5.5
Average Supply Current (mA)	0.008
Min Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss)	20
Typ Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss)	30
Max Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss)	40
Min Release Point Brp (Brps +ve/ Brpn -ve) (Gauss)	5
Typ Release Point Brp (Brps +ve/ Brpn -ve) (Gauss)	20
Max Release Point Brp (Brps +ve/ Brpn -ve) (Gauss)	32

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
PCN-2695	2024-10-11	2025-01-10	Additional Wafer Source (JKFAB), AT Site (JCET), BOM and POD
PCN-2512	2021-04-16	2021-07-16	Qualified Additional Assembly & Test (A/T) Site