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Diodes Incorporated AH180N-WSG-7
- Part No.:
- AH180N-WSG-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Switches (Solid State)
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AH180N-WSG-7.pdf
- Description:
- MAG SWITCH OMNIPOLAR TSOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,315
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Product details
Overview
AH180N-WSG-7 from Diodes Incorporated is a micropower omnipolar Hall-effect switch IC designed for contactless sensing in portable electronics. It operates from 2.5V to 5.5V, draws only 24µA at 3V, features an open-drain output, and switches reliably with either North or South magnetic poles (Bop ±35–50 G, Brp ±10–25 G) across –40°C to +85°C - used in clam-shell phone cover detection and PDA on/off control.
For engineers reviewing the AH180N-WSG-7 datasheet, AH180N-WSG-7 pinout, AH180N-WSG-7 application, or AH180N-WSG-7 equivalent, key selection criteria include its 24µA supply current, ±35 G operate point, chopper-stabilized architecture for thermal stability, SC59/TSOT23/SOT553 package options, and NRND status requiring design review before integration.
Technical Context
The AH180N employs dual Hall plates with chopper stabilization to cancel offset drift and maintain consistent switching thresholds over temperature. Its latch-based output remains stable until magnetic flux drops below the release point (Brp), enabling robust position detection without continuous polling.
It uses sleep/awake logic to minimize average current: typical awake time is 75–125 µs per sampling cycle, with a 75–125 ms period and 0.1% duty cycle - delivering ultra-low power operation while retaining responsiveness to magnetic field changes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.5V to 5.5V - supports single-cell Li-ion and 3.3V/5V system rails without regulation |
| Quiescent Current | 24µA at 3V - enables multi-year battery life in always-on cover-switch applications |
| Operate Point (Bop) | ±35 G to ±50 G - detects weak magnets at >3 mm air gap in thin mobile enclosures |
| Release Point (Brp) | ±10 G to ±25 G - provides 10 G minimum hysteresis to prevent chatter near threshold |
| Output Type | Open-drain - allows flexible pull-up to 5.5V and interfacing with 1.8V–5V logic |
| Operating Temp | –40°C to +85°C - qualified for consumer handheld and industrial portable equipment |
| ESD Robustness | >6 kV HBM - withstands handling and assembly without external protection |
Pinout & Package
Package: TSOT23 (3-pin, low-profile, 1.3mm × 2.9mm × 1.0mm), RoHS-compliant, lead-free, halogen-free "Green" device.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDD | Power supply input | Accepts 2.5–5.5V; internal regulator supplies bias to Hall plates and logic |
| 2 - GND | Ground reference | Return path for Hall sensor, output driver, and internal circuitry |
| 3 - OUTPUT | Open-drain output | Sinks up to 1mA when active; requires external pull-up for logic-high state |
Key Features
| Feature | Design Value |
|---|---|
| Omnipolar magnetic sensitivity | Detects both North and South poles - eliminates magnet orientation constraints in mechanical assembly |
| Chopper-stabilized architecture | Reduces offset drift to <1 G/°C - maintains Bop stability across –40°C to +85°C |
| Micropower sampling mode | 75–125 µs awake time, 75–125 ms period - achieves 24µA avg. current at 3V |
| RF noise immunity | Validated against common cellular band interference - prevents false triggers in noisy RF environments |
| Low-profile TSOT23 package | 1.0mm max height - fits under display bezels and within <10mm-thick clam-shell hinges |
Applications
| Cover Switch in Clam-Shell Phones | Display Switch for Portable PCs |
|---|---|
Use Scenario: Detects lid closure in flip-style smartphones to suspend display and enter sleep mode. IC Role / Device Role / Timing Role: Hall-effect proximity sensor providing latched ON/OFF state based on magnet presence. Use Value: Enables zero-power wake-on-open via magnetic actuation; 24µA quiescent current extends standby battery life. | Use Scenario: Activates backlight and touch controller when laptop lid opens. IC Role / Device Role / Timing Role: Magnetic position detector triggering system-level power sequencing. Use Value: Eliminates mechanical switch wear; ±35 G sensitivity works with small neodymium magnets embedded in hinge assemblies. |
| On/Off Switch for PDAs | Contact-Less Switch in Consumer Products |
Use Scenario: Powers on handheld organizers when stylus compartment or front cover is opened. IC Role / Device Role / Timing Role: Low-power Hall switch controlling enable signal to PMIC or microcontroller reset line. Use Value: Supports battery life >1 year in storage; chopper stabilization ensures reliable operation after thermal cycling. | Use Scenario: Replaces tactile buttons in smart remotes, wireless speakers, and IoT enclosures. IC Role / Device Role / Timing Role: Solid-state proximity actuator interfacing directly with 3.3V GPIO. Use Value: Withstands >100k actuations; ESD >6 kV HBM eliminates need for external TVS diodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Hall-effect switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AH1806-WG-7 | Same pinout, identical electrical specs, but marked NRND earlier - no functional difference | No change in use case; same cover-switch and display-sense roles | Select only if legacy BOM alignment required; no performance advantage over AH180N |
| HAL1505TS | Higher supply current (45µA), wider Bop range (±20–65 G), same TSOT23 package | Better suited for high-hysteresis or variable-gap applications; less optimized for ultra-low-power standby | Prefer when magnetic field strength varies significantly; avoid if sub-30µA avg. current is mandatory |
Compared with AH1806-WG-7 (identical function, earlier NRND status) and HAL1505TS (higher current, broader Bop), AH180N-WSG-7 delivers the lowest quiescent power and tightest operate-point tolerance - optimal for space-constrained, battery-critical cover-detection designs where magnet placement is controlled.
Availability
AH180N-WSG-7 is available at Aetrix Electronics and suitable for clam-shell phone cover detection, portable PC display switching, and PDA on/off control requiring stable component supply and long-lifecycle support for legacy portable designs.
Supply support for AH180N-WSG-7 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 automotive, industrial, computing, and consumer markets with high-reliability components.
The AH180N belongs to Diodes' Hall-effect switch product line, engineered specifically for ultra-low-power, contactless position sensing in battery-operated portable devices - emphasizing magnetic sensitivity, thermal stability, and compact packaging.
FAQ
Is AH180N-WSG-7 recommended for new designs?
No - Diodes Incorporated marks AH180N-WSG-7 as "Not Recommended for New Design" (NRND) due to planned obsolescence. It remains fully functional and supported for existing production, but new projects should evaluate successors like AH1812 or HAL15xx series for long-term supply assurance.
What is the maximum magnetic field the AH180N can withstand without damage?
The AH180N has no absolute maximum magnetic field rating - its magnetic characteristics are specified up to ±50 G for operation, but exposure to fields beyond this does not cause damage. The device is rated for unlimited magnetic flux density per its Absolute Maximum Ratings table.
Can AH180N-WSG-7 drive an LED directly?
No - the open-drain output sinks only up to 1mA (per datasheet IOUT = 1mA test condition). Driving even a low-current LED typically requires >5mA; an external N-channel MOSFET or bipolar transistor buffer is required for direct LED control.
Does AH180N-WSG-7 require an external capacitor?
Yes - a 10nF–100nF bypass capacitor between VDD and GND is recommended per the Typical Applications Circuit. This stabilizes the supply during magnetic sampling cycles and improves RF noise immunity, especially in cellular or Wi-Fi-enabled devices.
AH180N-WSG-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Omnipolar Switch
- Technology:
- Hall Effect
- Polarization:
- North Pole, South Pole
- Sensing Range:
- ±5mT Trip, ±1mT Release
- Test Condition:
- 25°C
- Voltage - Supply:
- 2.5V ~ 5.5V
- Current - Supply (Max):
- 16µA
- Current - Output (Max):
- -
- Output Type:
- Open Drain
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-59-3
AH180N-WSG-7 FAQ
1.How can I place an order for AH180N-WSG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AH180N-WSG-7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AH180N-WSG-7 reliable?
The price and inventory of AH180N-WSG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AH180N-WSG-7 is usually 5 days.
3.What payment methods are accepted for AH180N-WSG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH180N-WSG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH180N-WSG-7?
AH180N-WSG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH180N-WSG-7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AH180N-WSG-7?
For technical support, including AH180N-WSG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH180N-WSG-7 requirements.
6.How does Aetrix verify that AH180N-WSG-7 is sourced from the original manufacturer or authorized distributors?
All AH180N-WSG-7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AH180N-WSG-7 meets industry standards.
7.What is the process for return or replacement of AH180N-WSG-7?
All AH180N-WSG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AH180N-WSG-7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AH180N-WSG-7 part is unused and in its original packaging.
Return procedure for AH180N-WSG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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