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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Motor Drivers, Controllers

STMicroelectronics L6219DSA

Name: L6219DSA
Brand: STMicroelectronics
SKU: L6219DSA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: L6219DSA

Manufacturer:: STMicroelectronics

Category:: Motor Drivers, Controllers

Package:: 24-SOIC (0.295", 7.50mm Width)

Datasheet:: L6219DSA.pdf

Description:: IC MTR DRV BIPLR 4.75-5.25V 24SO

Quantity:: RFQ Add To RFQ list

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Inventory:2,105

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Product details

Overview

L6219DSA from STMicroelectronics is a bipolar stepper motor driver IC in SO24 package, designed to control both windings of bipolar stepper motors with up to 750 mA continuous output current per bridge, 10–46 V motor supply range, and integrated PWM current regulation. It supports full-step, half-step, and microstepping modes and includes built-in recirculation diodes, cross-conduction protection, and thermal shutdown-used in precision motion control systems for industrial automation and CNC positioning.

For engineers reviewing the L6219DSA datasheet, L6219DSA pinout, L6219DSA application, or L6219DSA equivalent, key selection criteria include its dual-H-bridge architecture, logic-compatible phase/I0/I1 interface, external RC-set off-time (toff), VREF-based current scaling, and thermal protection behavior under sustained load conditions.

Technical Context

The L6219DSA implements switch-mode current regulation using dual independent H-bridge output stages, each with Darlington source drivers and saturated sink drivers. Current limiting is achieved via voltage feedback from an external sense resistor (Rs) to comparator inputs, with three selectable current levels (0%, 33%, 67%, 100% of I_MAX) controlled by two logic inputs per winding.

Phase inputs determine current direction per bridge with Schmitt-trigger noise immunity and internal delay to prevent shoot-through. A monostable single-pulse generator sets off-time (t_off = 1.1·R_TC_T) during current decay, enabling precise average current control without external chopper circuitry.

Key Specifications

Parameter	Value and Actual Design Meaning
Output current (continuous)	±750 mA per bridge - sustains rated torque in bipolar stepper windings without external heatsinking at moderate ambient.
Motor supply range	10 V to 46 V - supports wide-range unregulated DC supplies common in industrial motor drives.
Saturation voltage (sink)	1.15 V @ 750 mA - limits conduction loss and self-heating in low-side switching path.
Current sense threshold	10 V ±0.5 V at V_REF = 5 V - defines trip point for PWM current regulation with ±5% tolerance.
Off-time programmability	t_off = 1.1·R_TC_T - allows tuning of current decay rate to match motor inductance and step rate.
Junction temperature limit	170 °C thermal shutdown - disables outputs before silicon damage, enabling safe operation in enclosed enclosures.
Logic supply voltage	4.75 V to 5.25 V - compatible with standard 5 V TTL/CMOS microcontrollers without level shifting.

Pinout & Package

Package: SO24 (Small Outline, 24-pin, ECOPACK® compliant, body width 7.5 mm, lead pitch 1.27 mm).

Pin/Terminal	Circuit Role	Design Meaning
1, 21	Bridge 1 Output (OUT1A/OUT1B)	H-bridge output terminals for winding 1; connect directly to stepper motor phase A.
2, 5	Bridge 2 Output (OUT2A/OUT2B)	H-bridge output terminals for winding 2; connect directly to stepper motor phase B.
3, 23	Current Sense Resistor Connection	Low-side emitter node for Rs placement; enables bidirectional current sensing per bridge.
4, 22	Comparator Input	Feedback input for PWM comparator; receives filtered Rs voltage to trigger current limiting.
6, 7, 18, 19	Ground (GND)	Common return for logic, sense, and power stages; also serves as primary thermal path to PCB copper.
8, 20	Input 0 (I01/I02)	Logic select for current level (low/medium/max/off) per bridge; TTL-compatible, open = high.
9, 17	Input 1 (I11/I12)	Second logic select for current level per bridge; combined with I0 to define 4-step current scale.
10, 16	Phase (PH1/PH2)	Direction control input per bridge; high = current flows OUTA→OUTB; includes Schmitt trigger and anti-shoot-through delay.
11, 15	Reference Voltage (VREF)	Analog input setting PWM threshold; 1.5–7.5 V range scales full-scale current linearly (e.g., 2 V → ~300 mA max).
12, 14	RC Timing Network	Connects external R_T/C_T to set t_off; determines current decay time between PWM pulses.
13	VSS (Logic Supply)	+5 V supply for internal logic, comparators, and input buffers; separate from motor supply for noise isolation.
24	VS (Motor Supply)	Main 10–46 V power input for H-bridge output stages; decoupling near pin required for stability.

Key Features

Feature	Design Value
Dual independent H-bridge output stage	Each bridge sustains 46 V and 750 mA continuously, with integrated clamp diodes eliminating need for external flyback components.
Programmable PWM current control	Three discrete current levels per winding selected via I0/I1 logic, plus zero-current state-enables torque/speed optimization across operating points.
Thermal shutdown with hysteresis	Triggers at 170 °C junction temperature and holds off until die cools below ~150 °C-prevents thermal runaway during stall or overload.
Cross-conduction protection	Internal timing delay on Phase transitions prevents simultaneous high-side/low-side transistor conduction-eliminates shoot-through current spikes.
Wide VREF scaling range (1.5–7.5 V)	Enables precise current calibration across motor variants and temperature drift; supports dynamic current reduction for low-noise microstepping.

Applications

Industrial CNC Positioning

Lab Automation Stage Control

Use Scenario: Open-loop position control of X-Y translation stages in coordinate measuring machines (CMMs) requiring sub-millimeter repeatability.

IC Role / Device Role / Timing Role: Bipolar stepper driver executing full/half-step sequences under microcontroller command; provides constant-current excitation per phase with minimal ripple.

Use Value: Integrated PWM regulation maintains consistent torque across speed range, while SO24 thermal design supports continuous duty in compact enclosures.

Use Scenario: Precision sample handling in automated liquid handlers and DNA sequencers where vibration-sensitive pipetting demands smooth acceleration profiles.

IC Role / Device Role / Timing Role: Dual-bridge controller implementing microstepping via external step/direction signals; VREF adjustment enables current ramping during start/stop transitions.

Use Value: Programmable t_off and Schmitt-triggered Phase inputs suppress electrical noise-induced missed steps in EMI-prone lab environments.

Printed Circuit Board Router

3D Printer Extruder Motion

Use Scenario: High-speed PCB milling with rapid direction reversals and variable feed rates, requiring robust current regulation under mechanical load variation.

IC Role / Device Role / Timing Role: Stepper driver managing bidirectional current in two independent windings; thermal shutdown protects against stalling during tool-path cornering.

Use Value: 46 V motor supply headroom accommodates back-EMF spikes during fast deceleration, reducing risk of overvoltage latch-up.

Use Scenario: Filament extrusion and gantry movement in desktop FDM printers where cost-effective, reliable motion control is critical for print quality.

IC Role / Device Role / Timing Role: Compact bipolar driver interfacing directly with 5 V Arduino/Raspberry Pi GPIO; I0/I1 logic simplifies firmware-based current mode selection.

Use Value: Built-in recirculation diodes and low V_CE(sat) minimize heat generation in unventilated printer chassis, extending component lifetime.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TB6560AHQ	Higher peak current (3.5 A), but requires external sense resistors and separate logic supply regulation; no integrated thermal shutdown hysteresis.	Better suited for high-torque NEMA23+ motors; lacks L6219DSA's seamless VREF scaling and SO24 thermal profile.	Select when >1 A winding current is mandatory and board space allows discrete support components.
LV8729V	Microstepping-only (up to 32x), integrated current DAC, lower voltage range (5–42 V); no discrete I0/I1 logic interface.	Optimized for quiet, high-resolution positioning; incompatible with legacy full/half-step controllers relying on PH/I0/I1 pins.	Prefer for new designs prioritizing acoustic noise reduction and fine step resolution over pin compatibility.

Compared with TB6560AHQ and LV8729V, the L6219DSA offers balanced integration-retaining direct logic-level control, wide supply flexibility, and robust thermal management-making it ideal for retrofitting existing 5 V microcontroller-based stepper systems without redesigning support circuitry.

Availability

L6219DSA is available at Aetrix Electronics and suitable for industrial CNC positioning, lab automation stage control, and printed circuit board router applications requiring stable component supply and long-term obsolescence management.

Supply support for L6219DSA 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.

The L6219DSA belongs to ST's legacy motor driver product line, engineered specifically for cost-sensitive, medium-power bipolar stepper applications where integration, thermal resilience, and logic-level simplicity outweigh ultra-high current or advanced microstepping features.

FAQ

What is the maximum allowable motor supply voltage for continuous operation?

The L6219DSA supports continuous operation up to 46 V on the VS pin, with absolute maximum rating at 50 V. Exceeding 46 V risks premature thermal shutdown or reduced reliability due to increased power dissipation in the output transistors, especially at high current and ambient temperatures above 85 °C.

How does the I0/I1 logic combination affect current regulation?

I0 and I1 per bridge select one of four current levels: L/L = 100% I_MAX, H/L = 67%, L/H = 33%, H/H = 0%. These settings configure internal comparator reference thresholds-not fixed currents-so actual output depends on VREF and sense resistor value per Equation 1 in the datasheet.

Can the L6219DSA drive unipolar stepper motors?

No-the L6219DSA is strictly a bipolar stepper driver with dual H-bridge topology requiring center-tap–free windings. Unipolar motors require separate phase-enable logic and lack the bidirectional current capability needed for this IC's output stage architecture.

What is the purpose of the RC pins (12 and 14)?

Pins 12 and 14 accept an external RC network that sets the off-time (t_off) of the PWM cycle: t_off = 1.1·R_TC_T. This controls how long current decays through the freewheeling path after each PWM pulse, directly affecting average winding current and motor torque ripple.

L6219DSA Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 24-SOIC (0.295", 7.50mm Width)

Packaging:: Tube

Product Status:: Obsolete

Motor Type - Stepper:: Bipolar

Motor Type - AC, DC:: Brushed DC

Function:: Driver - Fully Integrated, Control and Power Stage

Output Configuration:: Half Bridge (4)

Interface:: Parallel

Technology:: -

Step Resolution:: 1, 1/2

Applications:: General Purpose

Current - Output:: 750mA

Voltage - Supply:: 4.75V ~ 5.25V

Voltage - Load:: 10V ~ 46V

Operating Temperature:: -40°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 24-SO

L6219DSA FAQ

1.How can I place an order for L6219DSA through Aetrix?

Please submit a Request for Quotation (RFQ) for L6219DSA 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 L6219DSA reliable?

The price and inventory of L6219DSA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L6219DSA is usually 5 days.

3.What payment methods are accepted for L6219DSA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L6219DSA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for L6219DSA?

L6219DSA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your L6219DSA 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 L6219DSA?

For technical support, including L6219DSA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L6219DSA requirements.

6.How does Aetrix verify that L6219DSA is sourced from the original manufacturer or authorized distributors?

All L6219DSA 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 L6219DSA meets industry standards.

7.What is the process for return or replacement of L6219DSA?

All L6219DSA units undergo pre-shipment inspection (PSI). If there is an issue with L6219DSA, 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 L6219DSA part is unused and in its original packaging.

Return procedure for L6219DSA:

1.Submit a request within 90 days.

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

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