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Home > Products > Sensors, Transducers > Magnetic Sensors > Switches (Solid State)

Diodes Incorporated ATS276G-PG-B-A

Name: ATS276G-PG-B-A
Brand: Diodes Incorporated
SKU: ATS276G-PG-B-A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ATS276G-PG-B-A

Manufacturer:: Diodes Incorporated

Category:: Switches (Solid State)

Package:: 4-SSIP

Datasheet:: ATS276G-PG-B-A.pdf

Description:: MAGNETIC SWITCH LATCH 4SDIP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

ATS276G-PG-B-A 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, ±300G magnetic operate/release thresholds (G-grade), and integrated regulator, protection diode, and dual open-collector outputs (DO/DOB) in a SIP-4L package.

For engineers reviewing the ATS276G-PG-B-A datasheet, ATS276G-PG-B-A pinout, ATS276G-PG-B-A application, or ATS276G-PG-B-A equivalent, this device supports precise rotor position sensing in BLDC fan control, offers latch behavior with magnetic hysteresis, and requires external RC tuning for coil interface stability.

Technical Context

The ATS276G-PG-B-A integrates a Hall plate, amplifier, comparator, voltage regulator, and complementary open-collector drivers - all on a single die. Its G-grade magnetic sensitivity provides B_OP = +10 to +50 G and B_RP = –50 to –10 G, enabling reliable latching under varying air-gap and temperature conditions.

Each output (DO and DOB) switches in antiphase: DO turns low when B > B_OP, latching until B < B_RP; DOB mirrors the inverse state. The internal reverse-polarity protection diode safeguards only the IC side - external diode addition is required for full coil-side reverse-current blocking.

Key Specifications

Parameter	Value and Actual Design Meaning
Operating Voltage	3.5V to 20V - supports wide-input BLDC fan supplies without external regulation
Output Sink Current	400mA avg., 700mA peak - drives typical fan coil loads directly
Magnetic Sensitivity (G-grade)	B_OP: +10 to +50 G, B_RP: –50 to –10 G - ensures robust switching across mechanical tolerances
Output Configuration	Complementary open-collector (DO/DOB) - enables push-pull-like commutation without external logic
Operating Temperature	–20°C to +85°C - qualified for industrial and consumer fan environments
Package	SIP-4L - low-profile through-hole package with defined Hall active area depth (0.7mm)

Pinout & Package

SIP-4L (Single In-line Package, 4-pin, lead-free, green molding compound) with 1.95mm pin pitch and 1.0mm body height. Pin 1 (V_CC) is marked by chamfered corner on top view.

Pin/Terminal	Circuit Role	Design Meaning
1	Power Supply Input (V_CC)	Input for internal regulator; accepts 3.5–20V; powers Hall sensor and output stages
2	Output (DO)	Open-collector NPN output; sinks current when magnetic field exceeds B_OP
3	Output (DOB)	Complementary open-collector NPN output; high when DO is low, latched inversely
4	Ground (GND)	Reference return for regulator, Hall circuit, and output stages

Key Features

Feature	Design Value
Integrated Reverse Polarity Protection Diode	Protects IC-side only during V_CC reversal; eliminates need for external series diode on supply rail
G-Grade Magnetic Thresholds	Optimized B_OP/B_RP spread (±300G window) for stable latching in variable air-gap BLDC fan assemblies
Complementary Latched Outputs	DO/DOB provide phase-inverted, memory-retaining signals - reduces external logic count in 2-phase commutation
On-Chip Voltage Regulator	Stabilizes internal circuitry across 3.5–20V input range - enables direct connection to unregulated fan power rails

Applications

BLDC Fan Commutation

Revolution Counting

Use Scenario: Two-phase electronic commutation of 2-coil brushless DC cooling fans in servers and power supplies.

IC Role / Device Role / Timing Role: Hall latch providing rotor position feedback to drive external MOSFET half-bridges synchronously.

Use Value: Eliminates need for discrete Hall sensors + logic gates; G-grade hysteresis prevents chatter during slow rotation or vibration.

Use Scenario: Monitoring rotational speed and direction in HVAC blower assemblies using magnetic encoder wheels.

IC Role / Device Role / Timing Role: Magnetic edge detector generating quadrature-ready pulses via complementary outputs.

Use Value: DO/DOB transitions enable direction discrimination and pulse counting without additional XOR logic or microcontroller GPIO resources.

Speed Measurement

Motor Position Feedback

Use Scenario: Closed-loop RPM control in industrial blowers where fan speed must track PWM-set reference.

IC Role / Device Role / Timing Role: Pulse generator synchronized to magnet pole passage; output frequency proportional to shaft speed.

Use Value: 400mA sink capability allows direct interfacing with optocoupler inputs or MCU interrupt pins without level-shifting.

Use Scenario: Rotor angle detection in small appliance motors (e.g., vacuum cleaners, power tools) requiring precise timing.

IC Role / Device Role / Timing Role: Latched Hall switch delivering stable high/low states between magnetic poles for timing-critical gate drive.

Use Value: Built-in hysteresis (75G typ.) ensures clean state transitions even with mechanical backlash or EMI-induced flux noise.

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	Single-ended output, higher B_OP (±40G), no complementary pair	Requires external inverter for dual-phase drive; lower hysteresis margin	Choose when space constraints prohibit SIP-4L or only one output channel is needed
MELEXIS US1881EUA-ABA-000-SP	Complementary outputs, wider temp range (–40°C to +150°C), higher V_CC max (24V)	Supports automotive under-hood use; requires different PCB pad layout	Prefer for extended temperature or higher-voltage fan systems where SIP-4L footprint is acceptable

Compared with A3281LUA-T and US1881EUA-ABA-000-SP, ATS276G-PG-B-A delivers optimized G-grade magnetic thresholds and integrated reverse-protection for cost-sensitive BLDC fan designs using standard SIP-4L assembly processes.

Availability

ATS276G-PG-B-A is available at Aetrix Electronics and suitable for BLDC fan commutation, revolution counting, speed measurement, and motor position feedback requiring stable component supply across industrial and consumer electronics production cycles.

Supply support for ATS276G-PG-B-A 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 high-volume industrial and consumer applications.

The ATS276 product line targets cost-effective, reliable Hall-effect sensing for brushless DC motor commutation - emphasizing integration, thermal robustness, and compatibility with standard through-hole manufacturing.

FAQ

What is the magnetic polarity sensitivity of ATS276G-PG-B-A?

The ATS276G-PG-B-A responds to both North and South magnetic poles: DO turns on when flux density exceeds +10 to +50 G (South pole facing active surface), and releases when flux drops below –50 to –10 G (North pole proximity). Its complementary DOB output toggles inversely, enabling bipolar latching without external inversion.

Can ATS276G-PG-B-A drive fan coils directly?

No - ATS276G-PG-B-A provides open-collector outputs rated for 400mA average sink current, but it lacks built-in power MOSFETs. It drives external N-channel or P-channel MOSFET gate drivers or optocouplers in fan half-bridge circuits; coil current is handled by external power stages.

Is an external capacitor required for stable operation?

Yes - the datasheet recommends adding 2.2μF capacitors (C1/C2) across each coil winding, plus 47Ω resistors (R1/R2), to suppress inductive kickback and prevent false triggering. This RC network stabilizes the magnetic field seen by the Hall element during rapid coil current changes.

What does the "G" and "A" suffix indicate in ATS276G-PG-B-A?

"G" denotes the magnetic sensitivity grade (B_OP = +10 to +50 G); "A" specifies the magnetic hysteresis variant within that grade (standard 75G typical hysteresis). "PG" indicates green, lead-free SIP-4L packaging; "B" is bulk packaging; "A" is the internal revision code.

ATS276G-PG-B-A 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:: 5mT Trip, -5mT 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-A FAQ

1.How can I place an order for ATS276G-PG-B-A through Aetrix?

Please submit a Request for Quotation (RFQ) for ATS276G-PG-B-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 ATS276G-PG-B-A reliable?

The price and inventory of ATS276G-PG-B-A 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-A is usually 5 days.

3.What payment methods are accepted for ATS276G-PG-B-A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATS276G-PG-B-A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ATS276G-PG-B-A?

ATS276G-PG-B-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ATS276G-PG-B-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 ATS276G-PG-B-A?

For technical support, including ATS276G-PG-B-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATS276G-PG-B-A requirements.

6.How does Aetrix verify that ATS276G-PG-B-A is sourced from the original manufacturer or authorized distributors?

All ATS276G-PG-B-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 ATS276G-PG-B-A meets industry standards.

7.What is the process for return or replacement of ATS276G-PG-B-A?

All ATS276G-PG-B-A units undergo pre-shipment inspection (PSI). If there is an issue with ATS276G-PG-B-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 ATS276G-PG-B-A part is unused and in its original packaging.

Return procedure for ATS276G-PG-B-A:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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