Diodes Incorporated AH3582-P-A

Overview

AH3582-P-A from Diodes Incorporated is a high-voltage, high-sensitivity Hall effect omnipolar switch IC with internal pull-up resistor, designed for proximity and position sensing in industrial appliances and personal care devices. It operates from 3.0V to 28V, features ±40G typical operate point (BOP), ±25G typical release point (BRP), and -40°C to +125°C temperature range.

For engineers reviewing the AH3582-P-A datasheet, AH3582-P-A pinout, AH3582-P-A application, or AH3582-P-A equivalent, key selection criteria include magnetic sensitivity tolerance over temperature, internal pull-up resistance value (10–18 kΩ), output current limit (30–55 mA), and SIP-3 package compatibility with through-hole mounting and high-voltage transient robustness.

Technical Context

The AH3582 employs chopper-stabilized architecture with dynamic offset cancellation to minimize switch-point drift and ensure stable operation across -40°C to +125°C. Its bandgap-regulated internal supply enables consistent magnetic threshold performance independent of VDD variation within 3.0V–28V.

It integrates reverse-blocking diode, Zener clamps on VDD and OUTPUT pins, and output overcurrent limiting (IOCL = 30–55 mA). The omnipolar response allows activation by either South or North pole, with hysteresis (BHY) of 9–23 G for noise-immune switching in electrically noisy environments.

Key Specifications

Pinout & Package

Package: SIP-3 (Ammo Pack) - 3-pin single-inline package with spread leads, optimized for automated through-hole insertion and high thermal dissipation (550 mW at 25°C).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Hall effect omnipolar switch applications.

Compared with AL3505-30D and US1881EUA-AAA-000, the AH3582-P-A delivers superior high-voltage margin (28V operating, 32V transient), tighter BOP/BRP consistency (±40G/±25G typ), and SIP-3 packaging optimized for high-volume industrial insertion - making it preferred for 24V appliance control and flow metering where reliability and thermal performance are critical.

Availability

AH3582-P-A is available at Aetrix Electronics and suitable for industrial flow meters, appliance lid detection, personal care device position sensing, and factory automation proximity switches requiring stable component supply across extended temperature and voltage ranges.

Supply support for AH3582-P-A includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and sensing solutions for industrial and consumer markets.

The AH3582 belongs to Diodes' Hall-effect sensor product line, engineered specifically for robust, maintenance-free position and proximity detection in harsh environments - emphasizing wide voltage operation, thermal stability, and integrated protection.

FAQ

What is the function of the internal pull-up resistor in AH3582-P-A?

The internal pull-up resistor (10–18 kΩ) connects the OUTPUT pin to VDD, enabling open-drain operation without external components. It ensures a defined high state when the output is inactive, simplifying interface to MCUs or logic gates while maintaining compatibility with 3.3V, 5V, and 24V systems across the full 3.0–28V supply range.

Can AH3582-P-A operate reliably at 24V in continuous industrial use?

Yes - AH3582-P-A is rated for continuous operation at 24V (within its 3.0–28V range) and features Zener clamping on both VDD and OUTPUT pins to suppress transients. Its SIP-3 package dissipates up to 550 mW at 25°C, supporting sustained use in enclosed control panels with ambient temperatures up to +125°C.

How does the chopper-stabilized architecture improve performance?

Chopper stabilization (800 kHz) cancels offset voltage drift caused by temperature and stress, reducing BOP/BRP variation to ±20G over -40°C to +125°C. This ensures consistent magnetic threshold behavior without calibration, critical for repeatable position detection in appliances and flow meters exposed to thermal cycling.

Is AH3582-P-A compatible with lead-free reflow soldering processes?

Yes - AH3582-P-A is fully RoHS 3 compliant (2015/863/EU), halogen- and antimony-free, and rated for lead-free reflow profiles. Its SIP-3 (Ammo Pack) package supports standard IPC/JEDEC J-STD-020 moisture sensitivity level 1 handling and peak reflow temperatures up to 260°C.