Diodes Incorporated AH180-PL-B-S

Overview

AH180-PL-B-S from Diodes Incorporated is a micropower omnipolar Hall-effect sensor switch in SIP-3L package, operating from 2.5V to 5.5V with 24μW typical supply power at 3V, ±40–60 G magnetic operate point, and open-drain output activated by either north or south pole - used in clam-shell phone cover detection.

For engineers reviewing the AH180-PL-B-S datasheet, AH180-PL-B-S pinout, AH180-PL-B-S application, or AH180-PL-B-S equivalent, key selection factors include magnetic sensitivity hysteresis (15 G typ), -40°C to +85°C ambient operation, RoHS-compliant green molding compound, and SIP-3L lead-free packaging for space-constrained portable designs.

Technical Context

The AH180 employs dual Hall plates and chopper-stabilized architecture to cancel offset drift and ensure stable switching across temperature. Its latch-free output toggles only when magnetic flux exceeds Bop (±40–60 G) and releases below Brp (±10–30 G), delivering hysteresis of 15 G typ.

It features three distinct power modes: enabled average current ≤24 μA (−40°C to +85°C), disabled leakage <1 μA, and wake-up time of 75–125 μs. The open-drain output supports external pull-up (10–100 kΩ) and requires no internal biasing.

Key Specifications

Pinout & Package

Package: SIP-3L (Single In-line Package, 3-pin, straight-lead bulk variant). Dimensions: 2.00 × 1.15 × 0.51 mm, branded top surface, active area depth 0.43 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AL33030Q-12B and US1881EUA-AAA-000, AH180-PL-B-S delivers optimal balance of ultra-low power (24 μW), SIP-3L compactness, omnipolar flexibility, and RoHS-compliant green packaging for next-gen portable consumer devices.

Availability

AH180-PL-B-S is available at Aetrix Electronics and suitable for clam-shell phone cover detection, notebook lid sensing, PDA stylus holster monitoring, and tablet smart-cover interfaces requiring stable component supply with lead-free SIP-3L packaging.

Supply support for AH180-PL-B-S 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, headquartered in Plano, Texas, serving consumer, computing, industrial, and communications markets since 1960.

AH180 belongs to Diodes' Hall-effect sensor product line, engineered specifically for ultra-low-power magnetic presence detection in space- and energy-constrained portable electronics.

FAQ

What is the magnetic polarity requirement for AH180-PL-B-S operation?

AH180-PL-B-S is an omnipolar Hall switch: it activates with either a north or south magnetic pole oriented toward its branded surface. No magnet polarity orientation is required during mechanical integration, simplifying assembly in clam-shell hinges and smart covers.

Does AH180-PL-B-S require an external pull-up resistor?

Yes - the device has an open-drain output and requires an external pull-up resistor (10 kΩ to 100 kΩ recommended) to Vdd or another logic rail. Without it, the output remains floating and cannot drive downstream logic or interrupts reliably.

Can AH180-PL-B-S operate from a 1.8 V supply?

No - AH180-PL-B-S has a minimum supply voltage of 2.5 V per its absolute operating conditions. Attempting operation below 2.5 V may result in undefined output behavior, increased jitter, or failure to latch magnetic events.

Is AH180-PL-B-S pin-compatible with other Diodes Hall switches like AH190?

No - AH190 uses SC59 (SOT-23) package with different pinout (Vdd–NC–Output–NC–GND), while AH180-PL-B-S uses SIP-3L (Vdd–GND–Output). Physical and electrical incompatibility prevents direct replacement without PCB redesign.