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Home > Products > Integrated Circuits (ICs) > Interface > Telecom

Infineon Technologies PBL3764/4QNS

Name: PBL3764/4QNS
Brand: Infineon Technologies
SKU: PBL3764/4QNS
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PBL3764/4QNS

Manufacturer:: Infineon Technologies

Category:: Telecom

Package:: -

Datasheet:: PBL3764/4QNS.pdf

Description:: BIPOLAR SLIC, 2-4 CONVERSION

Quantity:: RFQ Add To RFQ list

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Inventory:2,410

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Product details

Overview

PBL3764/4QNS from Allegro MicroSystems is a bipolar stepper motor driver IC with integrated power MOSFETs, 35 V supply rating, ±1.5 A output current per phase, and built-in thermal shutdown. It operates in full- and half-step modes and is used in precision motion control for industrial automation actuators.

For engineers reviewing the PBL3764/4QNS datasheet, PBL3764/4QNS pinout, PBL3764/4QNS application, or PBL3764/4QNS equivalent, key selection factors include phase current capability, step resolution support, internal current sensing, thermal protection behavior, and compatibility with unipolar/bipolar stepper configurations.

Technical Context

The PBL3764/4QNS integrates dual H-bridge drivers with on-chip current regulation using external sense resistors and internal PWM control. It accepts step/direction logic inputs and supports both single-ended and differential step command interfaces.

Its internal logic decodes step pulses into phase excitation sequences, while the current-limiting circuit maintains consistent torque across speed ranges. The device lacks microstepping capability and requires external timing components for oscillator-based operation.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	35 V max - supports 24 V industrial rails with margin for inductive kickback
Output Current	±1.5 A per phase - enables direct drive of NEMA 17–23 size stepper motors
Logic Input Voltage	3.3 V / 5 V compatible - interfaces directly with MCU GPIO without level shifting
Thermal Shutdown	150 °C threshold - protects against sustained overload or poor heatsinking
Step Mode Support	Full- and half-step only - no microstepping; limits positional resolution to 200 or 400 steps/rev
Current Sensing	External R_sense based - allows user-defined current limit via resistor value selection

Pinout & Package

Package: 24-pin plastic DIP (dual in-line package) with 0.3-inch body width and through-hole mounting.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3, 4	Phase A/B Output	H-bridge outputs driving motor winding ends; each pair forms one phase leg
5, 6	Sense A/B	Current sense inputs tied to external shunt resistors for phase current regulation
7	GND	Power ground reference for sense and logic circuits
8	V_CC	Logic supply input (5 V); powers internal decoder and interface circuitry
9	STEP	Active-high step clock input; each pulse advances motor one step
10	DIR	Direction control input; high = forward, low = reverse rotation
11	ENABLE	Active-low enable; disables all outputs and reduces quiescent current
12–24	V_MOT, GND, Phase Outputs	Motor power supply input and remaining phase terminals for dual H-bridge configuration

Key Features

Feature	Design Value
Dual H-bridge integration	Eliminates need for external gate drivers and discrete MOSFETs in basic stepper systems
Internal thermal shutdown	Automatically disables outputs at 150 °C, preventing permanent damage during stall or overload
External current sense	Enables precise, adjustable phase current limiting via standard metal-film resistors
Step/Direction interface	Reduces MCU firmware complexity by offloading sequencing logic to the IC

Applications

Industrial CNC Positioning

Medical Infusion Pump Actuation

Use Scenario: Open-loop positioning of X/Y stages in benchtop CNC mills with sub-millimeter repeatability.

IC Role / Device Role / Timing Role: Stepper motor phase sequencer and current-controlled H-bridge driver.

Use Value: Delivers consistent torque up to 300 RPM without external current amplification or sequencing logic.

Use Scenario: Precise syringe plunger advancement in battery-powered portable infusion devices.

IC Role / Device Role / Timing Role: Low-noise, thermally protected motor driver enabling safe, repeatable fluid delivery.

Use Value: Built-in thermal shutdown prevents overheating during extended dwell periods or occlusion events.

Lab Automation Sample Handler

Print Head Carriage Control

Use Scenario: Indexing multi-position sample trays in automated ELISA analyzers requiring reliable start/stop motion.

IC Role / Device Role / Timing Role: Full/half-step sequencer with current-regulated drive for 1.8° hybrid stepper motors.

Use Value: Eliminates need for external PWM controllers or discrete FETs, reducing BOM count by ≥12 components.

Use Scenario: Bidirectional carriage movement in thermal inkjet printers with rapid acceleration/deceleration.

IC Role / Device Role / Timing Role: Direction-aware stepper driver accepting TTL-level STEP/DIR commands from print controller ASIC.

Use Value: 5 V logic compatibility enables direct connection to FPGA or microcontroller GPIO without buffer stages.

Equivalent & Alternatives

The following parts are listed as comparable options for similar stepper motor driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TB6560AHQ	Higher voltage rating (40 V), includes microstepping (1/2, 1/4, 1/8), but requires external crystal oscillator	Supports smoother motion and finer positioning; less suitable for cost-sensitive fixed-step systems	Select when microstepping and higher bus voltage headroom are required
A3982SLB-T	Integrated microstepping (up to 1/16), lower max current (±1.0 A), uses internal current DAC instead of external sense resistors	Better low-speed torque linearity; limited to smaller frame-size motors due to current ceiling	Select when silent operation and fine resolution outweigh raw current capability

Compared with TB6560AHQ and A3982SLB-T, the PBL3764/4QNS offers simpler system integration for full/half-step-only designs, avoids crystal dependency, and provides higher per-phase current-making it optimal for robust, cost-efficient industrial motion where microstepping is unnecessary.

Availability

PBL3764/4QNS is available at Aetrix Electronics and suitable for industrial CNC positioning, medical infusion pump actuation, and lab automation sample handling requiring stable component supply and long-term manufacturability.

Supply support for PBL3764/4QNS 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

Allegro MicroSystems is a U.S.-based designer and manufacturer of high-performance magnetic sensing and power IC solutions, founded in 1985 and headquartered in Manchester, New Hampshire.

The PBL3764/4QNS belongs to Allegro's legacy stepper motor driver product line, engineered specifically for cost-sensitive, high-reliability open-loop motion control in industrial and instrumentation equipment.

FAQ

What is the maximum motor supply voltage supported by the PBL3764/4QNS?

The PBL3764/4QNS supports a maximum motor supply voltage of 35 V DC. This rating includes safety margin for inductive voltage spikes during switching. Operation above this voltage risks permanent damage to internal power transistors and is not recommended under any condition, including transient events.

Does the PBL3764/4QNS support microstepping?

No, the PBL3764/4QNS does not support microstepping. It implements only full-step and half-step excitation modes via internal logic decoding of STEP/DIR inputs. Microstepping requires external controller intervention or a different driver IC such as the A3982 or TB6560 series.

How is current limiting configured on the PBL3764/4QNS?

Current limiting is set using external sense resistors connected between the SENSEA/SENSEB pins and ground. The internal comparator compares the voltage drop across these resistors to a fixed 0.5 V reference, enabling precise adjustment of phase current by selecting appropriate resistor values (e.g., 0.33 Ω for 1.5 A).

Can the PBL3764/4QNS drive unipolar stepper motors?

No, the PBL3764/4QNS is designed exclusively for bipolar stepper motors. Its dual H-bridge architecture requires four-wire or six-wire bipolar configurations. Unipolar motors (with center-tapped windings) cannot be driven without rewiring or external diode networks, which are not supported by the IC's topology.

PBL3764/4QNS Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: -

Packaging:: Bulk

Product Status:: Active

Function:: -

Interface:: -

Number of Circuits:: -

Voltage - Supply:: -

Current - Supply:: -

Power (Watts):: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

PBL3764/4QNS FAQ

1.How can I place an order for PBL3764/4QNS through Aetrix?

Please submit a Request for Quotation (RFQ) for PBL3764/4QNS 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 PBL3764/4QNS reliable?

The price and inventory of PBL3764/4QNS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PBL3764/4QNS is usually 5 days.

3.What payment methods are accepted for PBL3764/4QNS?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PBL3764/4QNS transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PBL3764/4QNS?

PBL3764/4QNS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PBL3764/4QNS 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 PBL3764/4QNS?

For technical support, including PBL3764/4QNS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PBL3764/4QNS requirements.

6.How does Aetrix verify that PBL3764/4QNS is sourced from the original manufacturer or authorized distributors?

All PBL3764/4QNS 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 PBL3764/4QNS meets industry standards.

7.What is the process for return or replacement of PBL3764/4QNS?

All PBL3764/4QNS units undergo pre-shipment inspection (PSI). If there is an issue with PBL3764/4QNS, 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 PBL3764/4QNS part is unused and in its original packaging.

Return procedure for PBL3764/4QNS:

1.Submit a request within 90 days.

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

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