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Diodes Incorporated AH3762Q-W-7
- Part No.:
- AH3762Q-W-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Switches (Solid State)
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AH3762Q-W-7.pdf
- Description:
- MAGNETIC SWITCH LATCH SC59
- Quantity:
- Payment:
- Shipping:
Inventory:3,052
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Product details
Overview
AH3762Q-W-7 from Diodes Incorporated is an AEC-Q100 Grade 0 qualified automotive Hall-effect bipolar latch IC in SC59 package, designed for brushless DC motor commutation and angular position sensing. It operates from 3.0V to 28V, delivers ±25G typical magnetic operate/release points, features chopper-stabilized architecture for <0.4V output saturation at 20mA, and supports -40°C to +150°C ambient operation in engine bay and transmission control applications.
For engineers reviewing the AH3762Q datasheet, AH3762Q pinout, AH3762Q application, or AH3762Q equivalent, key selection criteria include bipolar latch polarity configuration (South-on/North-off), open-drain output current limit (30–55mA), reverse supply protection (-32V rating), Zener clamping on VDD and OUTPUT pins, and package-specific magnetic polarity orientation (SC59 requires South pole on non-marking side).
Technical Context
The AH3762Q implements dynamic offset cancellation via chopper stabilization at 800kHz, enabling minimal switch-point drift (<±15G over -40°C to +150°C) and superior temperature stability of Bop/Brp hysteresis (20–80G). Its internal bandgap regulator supplies temperature-compensated bias to analog blocks independent of VDD variation.
It integrates a reverse-blocking diode and dual Zener clamps-on VDD (28V) and OUTPUT pins-to withstand automotive load-dump transients and ESD events (HBM >8kV, CDM >2kV). The single open-drain output switches low when B > +25G (South pole applied to non-marking side for SC59) and latches until B reverses below -25G (North pole).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3.0V to 28V - Enables direct connection to automotive battery rails without external regulation. |
| Operating Temperature | -40°C to +150°C - Qualified for under-hood and transmission-mounted position sensing. |
| Magnetic Operate Point (Bop) | +25G typical (±15G over temp) - Ensures reliable turn-on with low-strength magnets in compact motor assemblies. |
| Magnetic Release Point (Brp) | -25G typical (±15G over temp) - Provides 50G hysteresis to reject vibration-induced false triggering. |
| Output Saturation Voltage | 0.2V to 0.4V at 20mA - Minimizes power loss and self-heating in high-duty-cycle commutation cycles. |
| Output Current Limit | 30–55mA - Protects internal switch during short-circuit or excessive pull-up resistor loading. |
| Start-Up Time | 10µs typical - Supports fast-response RPM measurement in high-speed BLDC motors (>100k RPM). |
| ESD Robustness | HBM >8kV, CDM >2kV - Meets stringent automotive assembly and handling requirements. |
Pinout & Package
SC59 package: 3-pin surface-mount, 2.8mm × 2.9mm × 1.1mm body, gull-wing leads, thermal pad not electrically connected. Pin 1 (VDD) and Pin 2 (GND) are adjacent; Pin 3 (OUTPUT) is isolated on opposite side.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VDD | Power Supply Input | Accepts 3.0–28V with integrated reverse-blocking diode and 28V Zener clamp - survives load dump and reverse-battery conditions. |
| 2 GND | Ground Reference | Low-impedance return path for internal regulator, chopper circuitry, and output stage - critical for noise immunity in high-dV/dt environments. |
| 3 OUTPUT | Open-Drain Output | Switches low when latched; requires external pull-up; includes overcurrent limit (55mA max) and 28V Zener clamp for inductive kickback protection. |
Key Features
| Feature | Design Value |
|---|---|
| Bipolar latch operation | South pole activates, North pole releases - enables absolute angular position detection without external logic or microcontroller polling. |
| Chopper-stabilized architecture | 800kHz chopping frequency - eliminates offset drift and enables stable switching across full automotive temperature range. |
| Integrated protection | Reverse-blocking diode + dual Zener clamps (VDD and OUTPUT) - eliminates need for discrete TVS or reverse-polarity protection components. |
| High sensitivity & hysteresis | ±25G operate/release with 50G typical hysteresis - supports use with small, low-cost ferrite magnets in space-constrained encoders. |
| AEC-Q100 Grade 0 qualification | Validated for 150°C junction operation - certified for powertrain, transmission, and turbocharger position feedback systems. |
Applications
| BLDC Motor Commutation | RPM Measurement |
|---|---|
Use Scenario: Detecting rotor magnet polarity in 3-phase brushless DC motors for electronic commutation timing. IC Role / Device Role / Timing Role: Bipolar latch providing synchronized edge-triggered signals to gate driver ICs for precise 120° phase switching. Use Value: Eliminates need for external Schmitt triggers or debounce circuitry due to built-in 50G hysteresis and 10µs start-up time. |
Use Scenario: Counting magnetic transitions on rotating shafts in engine crankshaft or camshaft position sensors. IC Role / Device Role / Timing Role: Digital pulse generator delivering clean, jitter-free edges to microcontroller timer capture inputs. Use Value: Chopper stabilization ensures consistent pulse width and timing accuracy across -40°C to +150°C, critical for misfire detection. |
| Angular Encoder Indexing | Automotive Flow Meter Sensing |
Use Scenario: Detecting fixed reference marks on rotating gears or discs in steering angle or throttle position modules. IC Role / Device Role / Timing Role: Latching position indicator that holds state between successive index pulses for microcontroller wake-up or calibration. Use Value: Open-drain output interfaces directly with 3.3V or 5V MCU I/O; low 0.4V VON ensures robust logic-low recognition. |
Use Scenario: Monitoring turbine rotation in fuel or coolant flow meters using embedded permanent magnets. IC Role / Device Role / Timing Role: Contactless speed-to-frequency converter generating proportional pulse trains for flow rate calculation. Use Value: 28V absolute maximum VDD rating allows direct connection to 24V vehicle bus, reducing BOM count and failure points. |
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 identical SC59 footprint, improved Bop/Brp tolerance (±15G vs ±25G), lower IDD (2.5mA typ), and enhanced ESD (HBM >12kV). | Designed for new designs requiring longer lifecycle support; AH3762Q is not recommended for new designs per datasheet. | Select AH3722Q for production ramp; AH3762Q remains viable for legacy design continuity or obsolescence mitigation. |
| DRV5013A2QLPGM | Texas Instruments part in TO-92 package; higher sensitivity (±35G), but narrower VDD range (2.7–38V), no reverse-blocking diode, and no AEC-Q100 Grade 0 rating. | Lacks automotive qualification and integrated reverse-voltage protection - requires external components for automotive deployment. | Use only in non-automotive industrial or consumer applications where qualification and protection integration are not required. |
Compared with AH3722Q, AH3762Q offers proven field reliability but higher current consumption and looser magnetic tolerance; compared with DRV5013A2QLPGM, it provides full AEC-Q100 compliance and system-level protection integration at the cost of slightly lower sensitivity.
Availability
AH3762Q-W-7 is available at Aetrix Electronics and suitable for automotive BLDC motor control, engine RPM monitoring, angular encoder indexing, and flow meter sensing requiring stable component supply across extended temperature and voltage ranges.
Supply support for AH3762Q-W-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 manufacturer specializing in discrete, analog, and mixed-signal solutions for automotive, industrial, and computing markets.
The AH3762Q belongs to Diodes' automotive-qualified Hall-effect sensor product line, engineered specifically for contactless position and speed sensing in harsh environments where AEC-Q100 Grade 0 reliability and integrated protection are mandatory.
FAQ
What magnetic polarity configuration does AH3762Q-W-7 require for SC59 package?
The AH3762Q-W-7 in SC59 package requires the South pole to be applied to the non-part-marking side to activate the output. This is opposite to SOT23 and SIP-3 variants, which require South pole on the marking side. Polarity orientation is physically defined by die placement within the SC59 mold compound and verified in the functional block diagram and pin assignment diagrams.
Does AH3762Q-W-7 include reverse-voltage protection?
Yes - AH3762Q-W-7 integrates a reverse-blocking diode on the VDD pin, allowing it to withstand -32V reverse supply voltage per Absolute Maximum Ratings. This eliminates the need for external reverse-polarity protection diodes in automotive battery-connected applications, reducing BOM count and PCB area.
Can AH3762Q-W-7 drive a 10kΩ pull-up resistor directly?
Yes - with its 55mA output current limit and 0.4V max VON at 20mA, AH3762Q-W-7 can reliably sink current through a 10kΩ pull-up to 24V (2.4mA), resulting in <0.1V output high-state leakage and <0.4V low-state saturation. No external buffer is needed for standard microcontroller interface levels.
Is AH3762Q-W-7 pin-compatible with AH3722Q in SC59 package?
Yes - AH3762Q-W-7 and AH3722Q share identical SC59 mechanical dimensions, pinout (VDD-GND-OUTPUT), and electrical interface. The AH3722Q is a drop-in replacement with improved specifications, and Diodes explicitly positions it as the recommended successor for new designs while maintaining backward compatibility.
AH3762Q-W-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:
- 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:
- Surface Mount
- Supplier Device Package:
- SC-59-3
AH3762Q-W-7 FAQ
1.How can I place an order for AH3762Q-W-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AH3762Q-W-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 AH3762Q-W-7 reliable?
The price and inventory of AH3762Q-W-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AH3762Q-W-7 is usually 5 days.
3.What payment methods are accepted for AH3762Q-W-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH3762Q-W-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH3762Q-W-7?
AH3762Q-W-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH3762Q-W-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 AH3762Q-W-7?
For technical support, including AH3762Q-W-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH3762Q-W-7 requirements.
6.How does Aetrix verify that AH3762Q-W-7 is sourced from the original manufacturer or authorized distributors?
All AH3762Q-W-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 AH3762Q-W-7 meets industry standards.
7.What is the process for return or replacement of AH3762Q-W-7?
All AH3762Q-W-7 units undergo pre-shipment inspection (PSI). If there is an issue with AH3762Q-W-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 AH3762Q-W-7 part is unused and in its original packaging.
Return procedure for AH3762Q-W-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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