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Diodes Incorporated ATS276G-PG-B-C
- Part No.:
- ATS276G-PG-B-C
- Manufacturer:
- Diodes Incorporated
- Category:
- Switches (Solid State)
- Package:
- 4-SSIP
- Datasheet:
-
ATS276G-PG-B-C.pdf
- Description:
- MAGNETIC SWITCH LATCH 4SDIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,485
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Product details
Overview
ATS276G-PG-B-C from Diodes Incorporated is a complementary-output Hall-effect latch IC designed for electronic commutation in dual-coil brushless DC fans. It features 3.5V–20V operating voltage, 400mA average output sink current per channel, ±100G magnetic operate/release points (C-grade), and integrated reverse-polarity protection diode. Its SIP-4L package enables compact fan motor control with latched complementary outputs DO/DOB.
For engineers reviewing the ATS276G-PG-B-C datasheet, ATS276G-PG-B-C pinout, ATS276G-PG-B-C application, or ATS276G-PG-B-C equivalent, this device supports precise rotor position sensing in BLDC fan drivers where magnetic hysteresis stability, dual open-collector drive capability, and thermal robustness across –20°C to +85°C are critical selection criteria.
Technical Context
The ATS276G-PG-B-C integrates a Hall plate, voltage regulator, amplifier, comparator, and complementary open-collector output stage (DO and DOB) in a single die. Its C-grade magnetic characteristics specify Bop ≤ 100 G and Brp ≥ –100 G with 75 G typical hysteresis, enabling reliable switching under varying air-gap and temperature conditions.
Each output latches until magnetic flux crosses its release threshold-DO turns low when B > Bop and remains low until B < Brp; DOB operates inversely. The internal protection diode guards only the IC-side against reverse VCC polarity; external diode protection is required on the coil side for full system-level reverse-current blocking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage | 3.5 V to 20 V - supports wide-input 12 V/24 V fan supplies without external regulation |
| Output Sink Current | 400 mA avg., 700 mA peak - drives standard fan coil loads directly without external buffers |
| Magnetic Bop / Brp (C-grade) | ≤ +100 G / ≥ –100 G - high-sensitivity latching for small air-gap or weak magnet applications |
| Hysteresis | 75 G typical - prevents chatter during slow or noisy magnetic transitions |
| Supply Current | 16–25 mA at VCC = 20 V - low quiescent draw for always-on motor control logic |
| Output Saturation Voltage | 0.3–0.6 V at IL = 300 mA - minimizes power loss and heat generation in output stage |
| Operating Temperature | –20°C to +85°C - qualified for industrial and consumer fan environments |
Pinout & Package
ATS276G-PG-B-C is housed in a low-profile, lead-free SIP-4L package (Single In-line Package, 4-pin, 1.95 mm pitch, 0.7 mm active area depth). The package uses green molding compound (Br/Sb-free) and RoHS-compliant finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VCC) | Power supply input | Accepts 3.5–20 V; includes internal regulator and reverse-polarity protection diode (IC-side only) |
| 2 (DO) | Complementary output A | Open-collector, sinks up to 400 mA; latched low when B > Bop, releases when B < Brp |
| 3 (DOB) | Complementary output B | Open-collector, inverse of DO; latched high when B > Bop, releases low when B < Brp |
| 4 (GND) | Ground reference | Common return for regulator, Hall sensor, and output drivers; must be low-impedance |
Key Features
| Feature | Design Value |
|---|---|
| Complementary latched outputs | DO and DOB provide true push-pull-like drive without external logic, simplifying dual-coil phase control |
| C-grade magnetic sensitivity | Bop ≤ +100 G / Brp ≥ –100 G enables use with low-strength ferrite magnets or larger mechanical air-gaps |
| Integrated reverse-voltage protection | On-chip diode protects IC from –20 V reverse VCC, reducing BOM count vs. discrete protection solutions |
| Thermal derating curve | 550 mW max at 25°C, linearly derated to 0 mW at 150°C - enables predictable power handling in sealed fan housings |
| Lead-free & green packaging | SIP-4L with Br/Sb-free epoxy and RoHS-compliant terminations meets global environmental compliance mandates |
Applications
| Brushless DC Fan Control | Revolution Counting |
|---|---|
|
Use Scenario: Electronic commutation of dual-coil 12 V/24 V cooling fans in servers, power supplies, and industrial enclosures. IC Role / Device Role / Timing Role: Hall latch providing rotor position feedback to MCU or dedicated fan controller for synchronous coil energization. Use Value: Complementary DO/DOB outputs eliminate need for external inverters; C-grade hysteresis ensures stable switching despite vibration or temperature drift. |
Use Scenario: Monitoring rotational speed and direction of rotating shafts in HVAC blowers and appliance motors. IC Role / Device Role / Timing Role: Magnetic zero-crossing detector generating clean, latched pulse trains synchronized to magnet pole transitions. Use Value: 75 G hysteresis suppresses false counts from mechanical bounce or EMI; 400 mA sink current drives optocoupler or counter IC inputs directly. |
| Speed Measurement | Dual-Coil BLDC Motor Commutation |
|
Use Scenario: Closed-loop RPM feedback in variable-speed fan systems using microcontroller-based PWM control. IC Role / Device Role / Timing Role: Digital tachometer signal source delivering edge-aligned pulses proportional to shaft speed. Use Value: Fast 0.3–1.5 μs falling time ensures accurate high-RPM measurement up to 30,000 RPM with minimal jitter. |
Use Scenario: Rotor position sensing in compact 2-phase BLDC motors used in drones, power tools, and medical pumps. IC Role / Device Role / Timing Role: Latched Hall switch providing phase-state signals to gate driver ICs for precise 120° commutation sequencing. Use Value: Matched Bop/Brp symmetry and tight hysteresis tolerance ensure consistent electrical angle alignment across temperature and unit-to-unit variation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Hall-effect latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ALLEGRO A3281LUA-T | Unipolar latch, single open-collector output, 3.3–24 V operation, Bop = 30 G typical | Lacks complementary outputs; requires external inverter for dual-coil drive | Select when cost-sensitive unipolar sensing suffices and board space allows added logic |
| MELEXIS US1881EUA-ABA-002-SP | Bipolar latch, single output, 3.5–24 V, Bop = ±35 G, no integrated reverse-protection diode | Requires external reverse-polarity protection; lower magnetic sensitivity limits air-gap flexibility | Prefer when legacy design uses single-output topology and external protection is already present |
Compared with A3281LUA-T and US1881EUA-ABA-002-SP, ATS276G-PG-B-C uniquely delivers complementary latched outputs, C-grade high-sensitivity magnetic thresholds, and on-die reverse-VCC protection-reducing component count and improving reliability in space-constrained BLDC fan modules.
Availability
ATS276G-PG-B-C is available at Aetrix Electronics and suitable for brushless DC fan control, revolution counting, speed measurement, and dual-coil BLDC motor commutation requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ATS276G-PG-B-C 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, specializing in power management, signal integrity, and sensor solutions for industrial, computing, and consumer markets.
ATS276G-PG-B-C belongs to Diodes' Hall-effect sensor product line, engineered specifically for robust, low-cost electronic commutation in brushless DC cooling fans and motion-sensing applications.
FAQ
What is the magnetic sensitivity grade of ATS276G-PG-B-C?
The "C" suffix denotes C-grade magnetic characteristics: maximum operate point (Bop) of +100 G and minimum release point (Brp) of –100 G, with 75 G typical hysteresis. This grade provides the highest sensitivity among ATS276 variants, enabling reliable operation with weaker magnets or larger mechanical air-gaps in fan assemblies.
Can ATS276G-PG-B-C drive fan coils directly without external transistors?
Yes. Each output (DO and DOB) sinks up to 400 mA continuously and 700 mA peak, sufficient to drive typical 12 V/24 V BLDC fan coils directly. Output saturation voltage remains ≤0.6 V at 300 mA, limiting power dissipation to <180 mW per channel under nominal load.
Is the internal reverse-protection diode sufficient for full system-level reverse polarity protection?
No. The on-chip diode protects only the IC's VCC pin from reverse connection; it does not protect the fan coil or external circuitry. For complete system safety, an external series diode must be added on the coil side to block reverse current flow from the motor windings back into the supply rail.
How does the SIP-4L package affect PCB layout and thermal performance?
The SIP-4L footprint (1.95 mm pin pitch, 0.7 mm active area depth) enables compact, single-row placement aligned with fan motor leads. Thermal resistance θJA is optimized for natural convection; power dissipation derates linearly from 550 mW at 25°C to 0 mW at 150°C, requiring no heatsink in typical fan-mount configurations.
ATS276G-PG-B-C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 4-SSIP
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Function:
- Latch
- Technology:
- Hall Effect
- Polarization:
- Unidirectional
- Sensing Range:
- 10mT Trip, -10mT Release
- Test Condition:
- 25°C
- Voltage - Supply:
- 3.5V ~ 20V
- Current - Supply (Max):
- 25mA
- Current - Output (Max):
- -
- Output Type:
- Open Collector
- Features:
- -
- Operating Temperature:
- -20°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 4-SIP
ATS276G-PG-B-C FAQ
1.How can I place an order for ATS276G-PG-B-C through Aetrix?
Please submit a Request for Quotation (RFQ) for ATS276G-PG-B-C 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 ATS276G-PG-B-C reliable?
The price and inventory of ATS276G-PG-B-C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATS276G-PG-B-C is usually 5 days.
3.What payment methods are accepted for ATS276G-PG-B-C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATS276G-PG-B-C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATS276G-PG-B-C?
ATS276G-PG-B-C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATS276G-PG-B-C 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 ATS276G-PG-B-C?
For technical support, including ATS276G-PG-B-C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATS276G-PG-B-C requirements.
6.How does Aetrix verify that ATS276G-PG-B-C is sourced from the original manufacturer or authorized distributors?
All ATS276G-PG-B-C 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 ATS276G-PG-B-C meets industry standards.
7.What is the process for return or replacement of ATS276G-PG-B-C?
All ATS276G-PG-B-C units undergo pre-shipment inspection (PSI). If there is an issue with ATS276G-PG-B-C, 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 ATS276G-PG-B-C part is unused and in its original packaging.
Return procedure for ATS276G-PG-B-C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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