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Diodes Incorporated AH180-WG-7
- Part No.:
- AH180-WG-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Switches (Solid State)
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AH180-WG-7.pdf
- Description:
- MAGNETIC SWITCH OMNIPOL SC59-3
- Quantity:
- Payment:
- Shipping:
Inventory:44,246
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Product details
Overview
AH180-WG-7 from Diodes Incorporated is a micropower omnipolar Hall-effect sensor switch in SC59 (SOT23) package, designed for contactless magnetic detection in portable electronics. It operates from 2.5V to 5.5V, consumes only 8–24 µA average supply current at 3V, and switches its open-drain output on with either north or south magnetic pole. Used in clam-shell phone cover detection and notebook lid sensing.
For engineers reviewing the AH180-WG-7 datasheet, AH180-WG-7 pinout, AH180-WG-7 application, or AH180-WG-7 equivalent, key selection criteria include magnetic operate/release points (±40–60 G / ±10–30 G), chopper-stabilized temperature stability, ultra-low power consumption, and SC59 footprint compatibility with space-constrained PCB layouts.
Technical Context
The AH180-WG-7 integrates dual Hall plates and chopper stabilization to cancel offset drift and suppress thermal stress effects, enabling stable switching across –40°C to +85°C. Its latch-free architecture responds to magnetic flux density exceeding Bop (±40–60 G) and releases below Brp (±10–30 G), delivering 15 G typical hysteresis.
It features a single open-drain output requiring external pull-up (10kΩ–100kΩ), supports 10nF–100nF bypass capacitance for noise immunity, and achieves <0.1 µA leakage current when off - critical for battery runtime in always-on detection systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.5V to 5.5V - enables direct interface with Li-ion battery rails and 3.3V/5V logic without regulation. |
| Average Supply Current | 8–24 µA at 3V - extends battery life in portable devices operating continuously in sleep-mode detection. |
| Magnetic Operate Point (Bop) | ±40–60 Gauss - ensures reliable actuation with low-strength magnets used in consumer device hinges and latches. |
| Hysteresis (Bhy) | 15 Gauss typical - prevents output chatter near magnetic threshold during slow or noisy field transitions. |
| Output Type | Open-drain - allows flexible voltage-level translation and wired-OR configuration with other sensors. |
| ESD Rating | >6 kV HBM - protects against handling damage during manual assembly and end-user operation. |
| Operating Temperature | –40°C to +85°C - supports deployment in consumer handhelds exposed to ambient temperature extremes. |
Pinout & Package
AH180-WG-7 is packaged in SC59 (commonly known as SOT23 in Asia), a 3-pin surface-mount package with 0.95 mm body height and 2.8 mm × 1.6 mm footprint. Pin 1 = VDD, Pin 2 = GND, Pin 3 = OUTPUT (open-drain).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VDD) | Power supply input | Accepts 2.5–5.5V DC; internal regulator not required - simplifies power design. |
| 2 (GND) | Ground reference | Common return path for Hall plates, amplifier, and output stage - must be low-impedance for noise immunity. |
| 3 (OUTPUT) | Open-drain output | Sinks current when active; requires external pull-up to define logic-high level and drive load. |
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 <±0.5 mV over temperature - maintains consistent Bop/Brp across –40°C to +85°C. |
| Ultra-low quiescent power | 24 µW at 3V - enables multi-year battery life in always-on cover-open/close detection circuits. |
| RF noise immunity | Validated performance in presence of GSM/Bluetooth RF fields - prevents false triggers in wireless-enabled devices. |
| Green RoHS-compliant packaging | Halogen- and antimony-free, <900 ppm Br/Cl, <1000 ppm Sb - meets global environmental compliance requirements. |
Applications
| Cover Switch in Clam-Shell Phones | Cover Switch in Notebook PCs |
|---|---|
|
Use Scenario: Detects flip-open or slide-open motion of mobile phone housing to wake/sleep the display and radio subsystems. IC Role / Device Role / Timing Role: Magnetic proximity sensor providing digital ON/OFF status with 75–125 µs awake time and no debouncing circuitry needed. Use Value: Enables zero-power standby mode until magnetic field change occurs - directly contributes to >30% reduction in system idle current. |
Use Scenario: Monitors laptop lid position to trigger sleep/wake transitions and disable keyboard/touchpad when closed. IC Role / Device Role / Timing Role: Omnipolar Hall switch interfacing with Intel/AMD platform controller hub (PCH) GPIO via open-drain output. Use Value: Eliminates mechanical microswitch wear-out and bounce issues - improves product lifecycle reliability beyond 500,000 actuations. |
| Contactless Switch in PDAs | Smart Cover Detection in Tablets |
|
Use Scenario: Activates backlight and touch interface when PDA stylus holder or accessory cover is removed. IC Role / Device Role / Timing Role: Low-voltage Hall-effect switch operating from 3.3V rail with <0.1 µA off-state leakage. Use Value: Maintains sub-1 µA system standby current - essential for weeks-long battery hold time in legacy PDA designs. |
Use Scenario: Detects attachment/detachment of magnet-equipped smart covers to enable auto-wake and screen rotation lock. IC Role / Device Role / Timing Role: SC59-packaged sensor placed near tablet edge to sense cover magnet polarity-independent movement. Use Value: Supports compact 2.8 mm × 1.6 mm PCB area allocation while meeting IEC 61000-4-3 RF immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar omnipolar Hall-effect switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL33201ELTTR | Higher supply current (45 µA avg), wider Bop range (±30–80 G), same SC59 package | Better suited for high-noise industrial enclosures but reduces battery life in portable use | Select if higher magnetic sensitivity margin is required and power budget allows +20 µA increase |
| TMAG5170AHQDBVR | 3-axis linear Hall sensor with SPI interface, 1.71–3.6V supply, 1.2 µA sleep current | Provides directional field measurement and programmable thresholds - over-engineered for simple ON/OFF detection | Choose only if system requires magnetic vector data or future-proofing for advanced lid-angle estimation |
Compared with AL33201ELTTR and TMAG5170AHQDBVR, AH180-WG-7 delivers optimal balance of ultra-low power (8–24 µA), proven consumer-grade reliability, and minimal BOM cost - making it the preferred choice for cost-sensitive, battery-powered cover-sense applications where binary detection suffices.
Availability
AH180-WG-7 is available at Aetrix Electronics and suitable for clam-shell phone cover detection, notebook lid sensing, PDA accessory monitoring, and smart tablet cover activation requiring stable component supply and long-term obsolescence management.
Supply support for AH180-WG-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 semiconductor company specializing in discrete, analog, and mixed-signal ICs, with manufacturing certified to IATF 16949 and quality systems aligned with AEC-Q standards.
AH180-WG-7 belongs to Diodes' Hall-effect sensor product line, engineered specifically for ultra-low-power, contactless position sensing in portable consumer electronics - prioritizing micropower operation, magnetic robustness, and SC59/SIP-3 footprint flexibility.
FAQ
What is the magnetic polarity requirement for AH180-WG-7 operation?
AH180-WG-7 is an omnipolar Hall switch: it activates with either a north or south magnetic pole presented to the branded side of the package. The operate point is ±40–60 Gauss and release point is ±10–30 Gauss - polarity independence simplifies mechanical integration and magnet sourcing.
Does AH180-WG-7 require an external pull-up resistor on the OUTPUT pin?
Yes - the OUTPUT pin is open-drain and must be pulled up externally. Diodes recommends 10kΩ to 100kΩ to VDD. A 10kΩ pull-up yields ~0.1V output low voltage at 1mA sink, while 100kΩ minimizes current draw in active state but increases rise time.
Is AH180-WG-7 still in production or obsolete?
AH180-WG-7 is marked "OBSOLETE – PART DISCONTINUED" in the official Diodes datasheet (DS31023 Rev. 20-2, July 2020). However, Aetrix Electronics maintains legacy inventory and offers last-time-buy support, including full traceability and extended lifecycle coordination for existing designs.
Can AH180-WG-7 operate directly from a 3.7V Li-ion battery?
Yes - its 2.5V to 5.5V supply range fully covers the 3.0V–4.2V discharge curve of a single-cell Li-ion battery. No LDO or regulator is needed, and supply current remains stable across this range (8–24 µA avg), ensuring consistent magnetic threshold behavior.
AH180-WG-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:
- Active
- Function:
- Omnipolar Switch
- Technology:
- Hall Effect
- Polarization:
- North Pole, South Pole
- Sensing Range:
- ±6mT 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
AH180-WG-7 FAQ
1.How can I place an order for AH180-WG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AH180-WG-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 AH180-WG-7 reliable?
The price and inventory of AH180-WG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AH180-WG-7 is usually 5 days.
3.What payment methods are accepted for AH180-WG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH180-WG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH180-WG-7?
AH180-WG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH180-WG-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 AH180-WG-7?
For technical support, including AH180-WG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH180-WG-7 requirements.
6.How does Aetrix verify that AH180-WG-7 is sourced from the original manufacturer or authorized distributors?
All AH180-WG-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 AH180-WG-7 meets industry standards.
7.What is the process for return or replacement of AH180-WG-7?
All AH180-WG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AH180-WG-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 AH180-WG-7 part is unused and in its original packaging.
Return procedure for AH180-WG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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