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Diodes Incorporated AH3762Q-P-A
- Part No.:
- AH3762Q-P-A
- Manufacturer:
- Diodes Incorporated
- Category:
- Switches (Solid State)
- Package:
- 3-SIP Module
- Datasheet:
-
AH3762Q-P-A.pdf
- Description:
- MAGNETIC SWITCH LATCH 3SIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,565
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Product details
Overview
AH3762Q from Diodes Incorporated is an AEC-Q100 Grade 0 qualified automotive Hall-effect bipolar latch IC designed for brushless DC motor commutation, RPM sensing, and angular/linear position detection. It operates from 3.0V to 28V, delivers ±25G typical operate/release points, features chopper-stabilized architecture for <±0.5G temperature drift, and uses a single open-drain output with 30–55mA current limiting - deployed in engine timing, transmission speed sensors, and EPS rotor position feedback.
For engineers reviewing the AH3762Q datasheet, AH3762Q pinout, AH3762Q application, or AH3762Q equivalent, key selection criteria include magnetic sensitivity stability over –40°C to +150°C, reverse supply protection (–32V), Zener clamping on VDD and OUTPUT, and package-specific pole orientation (SOT23/SIP-3 require South pole on marking side; SC59 requires South pole on non-marking side).
Technical Context
The AH3762Q implements a dynamic offset cancellation architecture with integrated chopper stabilization at 800kHz, enabling robust operation under thermal stress and EMI. Its internal bandgap regulator supplies temperature-compensated bias to analog blocks, ensuring stable Bop/Brp thresholds across voltage (3–28V) and temperature (–40°C to +150°C) extremes.
Magnetic switching follows strict bipolar latch behavior: South pole above +25G (typ.) pulls OUTPUT low; North pole below –25G (typ.) releases it. Hysteresis of 50G (typ.) prevents chatter, and polarity orientation is physically tied to package type - confirmed via top-view pinout and part marking conventions per SOT23, SC59, and SIP-3 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3.0V to 28V - supports direct battery connection in 12V/24V automotive systems without external regulation. |
| Operating Temperature | –40°C to +150°C - qualified for under-hood applications including engine control and transmission modules. |
| Bop / Brp (Typ.) | +25G / –25G - enables reliable detection of small magnetic fields from compact magnets in tight mechanical envelopes. |
| Output Type | Open-drain with 30–55mA current limit - allows flexible pull-up configuration and inherent short-circuit protection. |
| Hysteresis (BHY) | 50G (typ.) - ensures noise-immune switching in high-vibration environments like crankshaft or camshaft sensing. |
| ESD Rating | HBM > 8kV, CDM > 2kV - exceeds AEC-Q100 requirements for handling and assembly robustness. |
| Power Dissipation (SIP-3) | 550mW at 25°C ambient - sufficient for continuous operation in sealed sensor housings without forced cooling. |
Pinout & Package
Available in SC59, SOT23, and SIP-3 (Ammo Pack and Bulk Pack) packages - all 3-pin surface-mount formats with identical pin numbering and functional assignment. Thermal derating curves are provided per package type to ensure safe operation up to +150°C junction temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VDD | Positive power supply input | Accepts 3.0–28V; includes reverse-blocking diode and Zener clamp (32V transient rating) for load-dump and jump-start resilience. |
| 2 GND | Ground reference | Common return for internal regulator, Hall sensor, and output stage; must be low-impedance for noise immunity. |
| 3 OUTPUT | Open-drain digital output | Sinks up to 55mA when latched ON; leakage <0.1µA when OFF; requires external pull-up for logic-level interface. |
Key Features
| Feature | Design Value |
|---|---|
| Chopper-stabilized Hall sensor | 800kHz chopping frequency eliminates offset drift, delivering <±0.5G Bop variation over full temperature range. |
| Integrated bandgap regulator | Stabilizes internal circuit supply independently of VDD fluctuations - maintains timing accuracy during cranking dips. |
| Reverse supply protection | Internal blocking diode + –32V absolute max rating - survives battery reversal and alternator field collapse transients. |
| Zener clamps on VDD and OUTPUT | 28V clamp on VDD and OUTPUT pins - suppresses ISO 7637-2 pulse 5a/b surges without external TVS diodes. |
| Pole orientation mapping | Package-specific magnetic polarity: SOT23/SIP-3 activate with South pole on marking side; SC59 activates with South pole on non-marking side. |
Applications
| Engine Crankshaft Position Sensing | Electric Power Steering (EPS) Rotor Angle |
|---|---|
|
Use Scenario: Detecting toothed wheel rotation on engine crankshaft to determine ignition timing and RPM. IC Role / Device Role / Timing Role: Bipolar latch providing edge-triggered, hysteresis-filtered digital pulses synchronized to crankshaft teeth. Use Value: ±25G sensitivity enables use with small, low-cost ferrite magnets; 50G hysteresis rejects vibration-induced false triggers during cold starts. |
Use Scenario: Monitoring rotor position in brushless DC motor of EPS system for precise torque vectoring. IC Role / Device Role / Timing Role: Latching Hall sensor supplying commutation signals to motor controller MCU with <3.75µs response delay. Use Value: 10µs power-on time ensures immediate readiness after vehicle wake-up; 3.0–28V range accommodates 12V battery variance during assist events. |
| Transmission Input Shaft Speed | Brake Caliper Piston Position |
|
Use Scenario: Measuring rotational speed of transmission input shaft for gear ratio calculation and shift control. IC Role / Device Role / Timing Role: High-voltage latch interfacing directly to 24V commercial vehicle power rails without level-shifting. Use Value: Reverse-blocking diode and –32V rating protect against load dump during heavy-duty shifting; SIP-3 package supports high-current PCB layouts. |
Use Scenario: Detecting linear piston displacement in electro-mechanical brake calipers for pedal feel emulation. IC Role / Device Role / Timing Role: Linear-to-digital converter substitute using calibrated magnet displacement and latch threshold repeatability. Use Value: ±25G operate point tolerance allows ±0.1mm mechanical air gap variation; AEC-Q100 Grade 0 certifies for safety-critical brake functions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Hall-effect latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AH3722Q | Successor device with improved Bop/Brp matching (±20G vs ±25G), lower IDD (2.5mA typ.), and same package options. | Identical functional role; optimized for newer designs requiring tighter magnetic threshold consistency. | Select AH3722Q for new designs - Diodes explicitly states AH3762Q is not recommended for new designs. |
| AL3762Q | Pin-compatible variant with enhanced ESD (HBM > 12kV) and extended hysteresis (60G min), but same Bop/Brp and voltage range. | Preferred where higher ESD robustness is required in manufacturing or end-use environments with frequent static exposure. | Choose AL3762Q only if HBM > 12kV is mandated; otherwise AH3722Q offers broader improvements. |
Compared with AH3762Q, AH3722Q reduces supply current and tightens magnetic thresholds for higher precision commutation, while AL3762Q trades marginal sensitivity stability for superior ESD resilience - both retain identical pinout, voltage range, and AEC-Q100 Grade 0 qualification.
Availability
AH3762Q is available at Aetrix Electronics and suitable for automotive engine management, electric power steering, and transmission control systems requiring stable component supply across extended temperature and voltage ranges.
Supply support for AH3762Q 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 manufacturer specializing in discrete, analog, and mixed-signal solutions for automotive, industrial, and consumer markets.
The AH3762Q belongs to Diodes' automotive-grade Hall-effect sensor product line, engineered specifically for high-reliability position and speed sensing in harsh under-hood environments with minimal external components.
FAQ
What is the magnetic polarity requirement for AH3762Q activation?
The AH3762Q requires opposite magnetic pole orientation depending on package: SOT23 and SIP-3 packages activate with South pole applied to the part marking side, while SC59 activates with South pole applied to the non-marking side. This is defined by internal die placement and confirmed in the datasheet's pin diagrams and magnetic characteristic notes.
Does AH3762Q require an external capacitor on VDD?
Yes - a 10nF to 100nF ceramic decoupling capacitor (CIN) is recommended between VDD and GND to stabilize the internal regulator and improve RF noise immunity. This is specified in the Typical Applications Circuit and supported by characterization data showing improved start-up reliability and reduced switching jitter.
Can AH3762Q operate reliably at 28V continuously?
Yes - 28V is the maximum continuous operating supply voltage per Recommended Operating Conditions. The 32V absolute maximum rating applies only to transient stress (e.g., load dump), not sustained operation. Long-term operation at 28V is validated across –40°C to +150°C with full parameter compliance.
Is AH3762Q pin-compatible with AH3722Q?
Yes - AH3722Q shares identical pinout, package options (SC59, SOT23, SIP-3), and functional interface. It is a direct drop-in replacement with improved electrical specs, and Diodes explicitly recommends it for new designs in place of AH3762Q.
AH3762Q-P-A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 3-SIP Module
- Packaging:
- Cut Tape (CT)
- Product Status:
- Obsolete
- Function:
- Latch
- Technology:
- Hall Effect
- Polarization:
- South Pole
- Sensing Range:
- 4mT Trip, -4mT Release
- Test Condition:
- -40°C ~ 150°C
- Voltage - Supply:
- 3V ~ 28V
- Current - Supply (Max):
- 4mA
- Current - Output (Max):
- 60mA
- Output Type:
- Open Drain
- Features:
- Temperature Compensated
- Operating Temperature:
- -40°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 3-SIP
AH3762Q-P-A FAQ
1.How can I place an order for AH3762Q-P-A through Aetrix?
Please submit a Request for Quotation (RFQ) for AH3762Q-P-A 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 AH3762Q-P-A reliable?
The price and inventory of AH3762Q-P-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AH3762Q-P-A is usually 5 days.
3.What payment methods are accepted for AH3762Q-P-A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH3762Q-P-A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH3762Q-P-A?
AH3762Q-P-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH3762Q-P-A 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 AH3762Q-P-A?
For technical support, including AH3762Q-P-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH3762Q-P-A requirements.
6.How does Aetrix verify that AH3762Q-P-A is sourced from the original manufacturer or authorized distributors?
All AH3762Q-P-A 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 AH3762Q-P-A meets industry standards.
7.What is the process for return or replacement of AH3762Q-P-A?
All AH3762Q-P-A units undergo pre-shipment inspection (PSI). If there is an issue with AH3762Q-P-A, 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 AH3762Q-P-A part is unused and in its original packaging.
Return procedure for AH3762Q-P-A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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