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

STMicroelectronics L6219R

Name: L6219R
Brand: STMicroelectronics
SKU: L6219R
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: L6219R

Manufacturer:: STMicroelectronics

Category:: Motor Drivers, Controllers

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

Datasheet:: L6219R.pdf

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

Quantity:: RFQ Add To RFQ list

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Inventory:2,626

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Product details

Overview

L6219R from STMicroelectronics is a bipolar stepper motor driver IC with dual full-bridge output stage, capable of delivering up to 500 mA continuous current per winding at 4.5–10 V motor supply voltage. It supports half-step, full-step, and microstepping modes via logic-controlled PWM current regulation, includes built-in recirculation diodes and cross-conduction protection, and is used in precision motion control systems such as industrial automation actuators and lab-grade positioning stages.

For engineers reviewing the L6219R datasheet, L6219R pinout, L6219R application, or L6219R equivalent, this page delivers verified functional context, validated pin-level circuit roles, confirmed thermal shutdown behavior (170 °C), exact SO-24 package mapping, and real-world current control implementation using external R_S and V_REF.

Technical Context

The L6219R integrates two independent H-bridges with Darlington source and saturated sink transistors, each with integrated clamp diodes for current recirculation. Its PWM-based current regulation uses an external sense resistor (R_S) and programmable reference voltage (V_REF) to set four discrete current levels (0%, 33%, 67%, 100% of I_Omax) via dual logic inputs (I0/I1).

A Schmitt-triggered PHASE input controls current direction per bridge, while RC network timing (R_T/C_T) sets fixed off-time (t_OFF = 1.1·R_TC_T) during decay cycles. Thermal shutdown disables outputs above 170 °C junction temperature, and cross-conduction prevention ensures safe switching transitions between drive states.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Current (continuous)	±500 mA per winding - defines maximum sustained torque delivery without thermal derating
Motor Supply Range	4.5 V to 10 V - supports direct connection to unstabilized battery or unregulated DC rails
Logic Supply Voltage	4.75 V to 5.25 V - requires stable 5 V rail for TTL-compatible input thresholds and internal logic
Output Saturation Voltage	0.3–1.6 V (sink/source, ±300/±500 mA) - determines conduction loss and heat generation at rated load
Thermal Shutdown Threshold	170 °C - triggers automatic output disable to prevent permanent die damage under overload
Reference Voltage Range	1.5 V to 2 V - sets peak current limit in conjunction with sense resistor value (I_MAX = V_REF / 10R_S)
Input Logic High Threshold	2.4 V min - ensures compatibility with standard 5 V CMOS/TTL microcontroller GPIOs

Pinout & Package

Package: SO-24 (20+2+2 lead count configuration), surface-mount, ECOPACK® lead-free, 18 °C/W junction-to-case thermal resistance.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 5, 21	OUT A / OUT B	H-bridge output terminals - connect directly to one winding of bipolar stepper motor
3, 23	Sense Resistor	Emitter node for current-sensing resistor - sets feedback path for PWM current regulation
4, 22	Comparator Input	Inverting input of current-limit comparator - receives filtered voltage across sense resistor
6, 7, 18, 19	GND	Common ground return - electrically and thermally connects to PCB copper for heat dissipation
8, 20	Input 0	Current level select bit 0 - combined with Input 1 to choose 0%/33%/67%/100% output current
9, 17	Input 1	Current level select bit 1 - enables four discrete PWM duty-cycle settings for precise current scaling
10, 15	Phase	Direction control input - high level drives current from OUT A to OUT B; Schmitt trigger prevents noise-induced glitches
11, 16	Reference Voltage	Analog current limit setpoint - V_REF directly scales maximum winding current via I_MAX = V_REF / 10R_S
12, 14	RC Timing	Monostable off-time control - R_T/C_T network sets fixed decay duration (t_OFF = 1.1·R_TC_T)
13	V_SS	Logic supply input - powers internal comparators, logic gates, and Schmitt triggers at 4.75–5.25 V
24	V_S	Motor supply input - powers H-bridge output stage; accepts 4.5–10 V unstabilized input

Key Features

Feature	Design Value
Dual full-bridge output stage	Two independent H-bridges with integrated Darlington/saturated transistors and clamp diodes enable bidirectional control of both stepper windings
Programmable PWM current control	Four selectable current levels (0–100%) via two logic inputs and external V_REF, enabling precise torque and speed tuning
Cross-conduction protection	Hardware-enforced dead-time prevents shoot-through during phase reversal, eliminating need for external gate timing logic
Integrated thermal shutdown	Automatic output disable at 170 °C junction temperature protects against irreversible damage during overload or poor heatsinking
Low-noise phase input	Schmitt-triggered PHASE pin with internal delay ensures glitch-free direction switching and eliminates external debouncing components

Applications

Industrial CNC Positioning

Lab Automation Stage Control

Use Scenario: Open-loop position control of X-Y translation stages in automated test equipment requiring sub-millimeter repeatability.

IC Role / Device Role / Timing Role: Bipolar stepper driver executing microstepping sequences under microcontroller command; provides constant-current winding excitation with adjustable torque.

Use Value: Enables smooth low-speed motion and high holding torque without external current-sense amplifiers or discrete H-bridge transistors.

Use Scenario: Precision sample handling in robotic liquid handlers where motor heating must be minimized during extended dwell periods.

IC Role / Device Role / Timing Role: Dual-bridge stepper controller regulating winding current via PWM to maintain target torque while limiting average power dissipation.

Use Value: Built-in thermal shutdown and programmable current scaling reduce risk of motor overheating and extend system uptime in unattended operation.

Medical Infusion Pump Actuation

Print Head Carriage Drive

Use Scenario: Dosing accuracy-critical fluid delivery in syringe pumps where step loss must be avoided across variable load profiles.

IC Role / Device Role / Timing Role: Stepper motor driver maintaining consistent winding current despite back-EMF variations during acceleration/deceleration phases.

Use Value: Internal PWM regulation and low V_CE(sat) (<1.6 V @ 500 mA) minimize torque ripple and ensure reliable step advancement under load.

Use Scenario: Bidirectional carriage movement in inkjet printers requiring rapid start/stop cycles and positional stability at rest.

IC Role / Device Role / Timing Role: Full-step/half-step driver controlling two-phase stepper motor; PHASE and I0/I1 inputs synchronized to print controller timing signals.

Use Value: Integrated recirculation diodes and cross-conduction protection eliminate external flyback components and simplify PCB layout for compact printer designs.

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
TB6600HG	Higher current rating (4.5 A), external MOSFET drivers, no integrated diodes	Requires external power stage and current-sense circuitry; suited for high-power industrial motors	Select when >500 mA per phase is required and board space allows discrete FET layout
DRV8825	Microstepping resolution up to 1/32, integrated current DAC, 2.2 A max, 3.3/5 V logic compatible	Supports finer position resolution and lower noise operation but requires tighter V_REF tolerance and thermal management	Select for applications demanding sub-step precision and compatibility with 3.3 V microcontrollers

Compared with TB6600HG and DRV8825, the L6219R offers simpler integration for mid-range torque requirements (≤500 mA), eliminates external diodes and gate drivers, and operates reliably with minimal external components - making it optimal for cost-sensitive, space-constrained embedded motion control.

Availability

L6219R is available at Aetrix Electronics and suitable for industrial CNC positioning, lab automation stage control, and medical infusion pump actuation requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for L6219R 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 L6219R belongs to ST's legacy motor driver product line, engineered specifically for cost-effective, integrated bipolar stepper control in resource-constrained embedded systems with unstabilized power supplies.

FAQ

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

The L6219R supports a continuous motor supply voltage range of 4.5 V to 10 V. Absolute maximum rating is 30 V, but operation above 10 V risks exceeding safe power dissipation limits and triggering thermal shutdown. Designers must verify junction temperature rise using R_thj-amb = 75 °C/W and actual load conditions.

How does the current level selection logic work with I0 and I1 inputs?

I0 and I1 are dual logic inputs that select one of four current levels: L/L = 100% I_Omax, H/L = 67%, L/H = 33%, H/H = 0%. Each combination activates a specific comparator threshold, scaling the PWM duty cycle accordingly. Inputs left open default to high, so unused pins must be tied to V_SS or V_REF for deterministic behavior.

Can the L6219R drive unipolar stepper motors?

No - the L6219R is designed exclusively for bipolar stepper motors with center-tapped or dual-winding configurations. Its dual full-bridge architecture requires four independent terminals per motor phase and cannot interface with unipolar motors' common-center-tap topology or single-polarity drive requirements.

What is the purpose of the RC timing network on pins 12 and 14?

The RC network sets the fixed off-time (t_OFF) during current decay cycles: t_OFF = 1.1·R_TC_T. This controls how long the H-bridge remains inactive after current sensing trips, allowing winding current to decay before reactivation. NPO-type capacitors are mandatory to ensure timing stability over temperature and voltage.

L6219R 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:: 500mA

Voltage - Supply:: 4.75V ~ 5.25V

Voltage - Load:: 4.5V ~ 10V

Operating Temperature:: -20°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 24-SO

L6219R FAQ

1.How can I place an order for L6219R through Aetrix?

Please submit a Request for Quotation (RFQ) for L6219R 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 L6219R reliable?

The price and inventory of L6219R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L6219R is usually 5 days.

3.What payment methods are accepted for L6219R?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L6219R transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for L6219R?

L6219R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your L6219R 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 L6219R?

For technical support, including L6219R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L6219R requirements.

6.How does Aetrix verify that L6219R is sourced from the original manufacturer or authorized distributors?

All L6219R 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 L6219R meets industry standards.

7.What is the process for return or replacement of L6219R?

All L6219R units undergo pre-shipment inspection (PSI). If there is an issue with L6219R, 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 L6219R part is unused and in its original packaging.

Return procedure for L6219R:

1.Submit a request within 90 days.

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

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