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

STMicroelectronics E-L6219R

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

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Part No.:: E-L6219R

Manufacturer:: STMicroelectronics

Category:: Motor Drivers, Controllers

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

Datasheet:: E-L6219R.pdf

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

Quantity:: RFQ Add To RFQ list

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Product details

Overview

E-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 TTL-compatible logic inputs (I0/I1, PHASE), features internal PWM current control with thermal shutdown, and integrates built-in recirculation diodes - used in precision motion control systems for industrial automation and CNC positioning.

For engineers reviewing the E-L6219R datasheet, E-L6219R pinout, E-L6219R application, or E-L6219R equivalent, key selection considerations include its 500 mA per-bridge current rating, SO-24 package thermal resistance (R_thj-amb = 75 °C/W), internal current-sense comparator architecture, and compatibility with unstabilized motor supplies - critical for reliable open-loop stepper control in embedded motion subsystems.

Technical Context

The L6219R implements switch-mode current regulation using an internal PWM controller triggered by comparator outputs monitoring voltage across external sense resistors. Current level selection (off / 1/3 / 2/3 / full I_Omax) is determined by two logic inputs per bridge, while PHASE inputs set bidirectional current direction through each H-bridge winding.

Its output stage comprises four Darlington source drivers and four saturated sink drivers per bridge, with integrated clamp diodes enabling efficient current recirculation. Cross-conduction protection and Schmitt-triggered PHASE inputs prevent shoot-through during direction switching, and thermal shutdown disables outputs above 170 °C junction temperature.

Key Specifications

Parameter	Value and Actual Design Meaning
Output current (continuous)	±500 mA per bridge - sets maximum sustained torque capability for NEMA 8–11 stepper motors without external heatsinking.
Motor supply range	4.5 V to 10 V - enables direct operation from unregulated 5 V or 9 V rails, eliminating need for dedicated motor LDO.
Logic supply voltage	4.75 V to 5.25 V - matches standard TTL/LS-TTL and 5 V microcontroller I/O levels without level shifting.
Output saturation voltage	0.3–1.6 V (sink/source, 300–500 mA) - determines conduction loss and self-heating at rated load; impacts thermal derating above 70 °C ambient.
Thermal shutdown threshold	170 °C junction temperature - provides fail-safe protection during stall or overload conditions before silicon damage occurs.
Reference voltage input	1.5–2.0 V - directly scales peak current limit (I_max = V_REF / 10·R_S) with external sense resistor R_S.
OFF time control	t_OFF = 1.1·R_TC_T - adjustable blanking period (e.g., 50 μs with 56 kΩ + 820 pF) governs PWM frequency and average current ripple.

Pinout & Package

Package: SO-24 (20+2+2 lead count), ECOPACK® lead-free, surface-mount, 75 °C/W junction-to-ambient thermal resistance with minimal copper area.

Pin/Terminal	Circuit Role	Design Meaning
1,2 / 5,21	OUT A / OUT B	H-bridge output terminals per winding - connect directly to stepper motor phase A and B windings.
3,23	Sense resistor	Emitter connection point for external current-sense resistor R_S - sets current limit threshold via voltage drop feedback.
4,22	Comparator input	Inverting input of current-limit comparators - receives filtered sense voltage to trigger PWM off-time.
6,19 / 7,18	GND	Power ground return path for both motor and logic sections - also serves as primary thermal conduction path to PCB copper.
8,20 / 9,17	I0 / I1	Current-level select logic inputs - define 4-step current scaling (off, 1/3, 2/3, full) per bridge via binary encoding.
10,16	PHASE	Direction control input - high/low state determines current flow direction (A→B or B→A) through each winding.
11,15	V_REF	Analog reference voltage input - sets absolute current limit threshold; must be stable and low-noise (≤2 V).
12,14	RC	External RC network connection - defines PWM off-time duration t_OFF for current decay control.
13	V_SS	Logic supply input - powers internal comparators, logic gates, and Schmitt triggers (4.75–5.25 V).
24	V_S	Motor supply input - powers H-bridge output stage; accepts 4.5–10 V unstabilized input with dV/dt tolerance.

Key Features

Feature	Design Value
Dual full-bridge output stage	Two independent H-bridges with integrated Darlington/saturated transistors and clamp diodes - eliminates need for external flyback components.
Internal PWM current control	Self-contained current-regulation loop using external R_S, V_REF, and RC timing - enables precise open-loop torque control without microcontroller PWM generation.
Thermal shutdown protection	Automatic output disable at 170 °C junction temperature - prevents irreversible device failure during prolonged stall or overcurrent events.
Logic-level phase and current inputs	TTL-compatible I0/I1/PHASE inputs with Schmitt-trigger noise immunity and internal delay - ensures robust operation in electrically noisy industrial environments.
Unstabilized motor supply support	Operates across 4.5–10 V V_S with no requirement for regulated rail - simplifies power architecture in cost-sensitive motion control designs.

Applications

Industrial CNC Positioning

Medical Lab Automation

Use Scenario: Open-loop X-Y stage control in benchtop CNC mills with NEMA 11 stepper motors.

IC Role / Device Role / Timing Role: Bipolar stepper driver providing bidirectional current control and microstepping resolution via external logic sequencing.

Use Value: Enables sub-0.9° step resolution and consistent 500 mA per-phase current delivery without closed-loop feedback sensors.

Use Scenario: Precision reagent dispensing arm in automated ELISA analyzers requiring repeatable 1/4-step movement.

IC Role / Device Role / Timing Role: Stepper motor interface translating microcontroller step/direction pulses into controlled winding current waveforms.

Use Value: Internal PWM regulation maintains constant current amplitude across varying motor back-EMF, ensuring accurate fluid volume displacement.

Printed Circuit Board Router

Automated Test Equipment (ATE)

Use Scenario: Z-axis depth control in desktop PCB milling machines operating at 0–10 kHz step rates.

IC Role / Device Role / Timing Role: Motor driver executing half/full-step sequences under FPGA-generated timing signals with thermal fault monitoring.

Use Value: Integrated thermal shutdown prevents coil overheating during rapid acceleration/deceleration cycles typical in PCB routing paths.

Use Scenario: Probe card positioning system in semiconductor wafer testers requiring sub-micron repeatability.

IC Role / Device Role / Timing Role: Stepper interface managing bidirectional current polarity and current magnitude scaling for fine positional tuning.

Use Value: Four-level current programming (via I0/I1) allows dynamic torque adjustment during contact verification and test probing phases.

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
L6219D	Same die, non-ECOPACK® SO-24 package with leaded terminations - higher R_thj-amb (80 °C/W) and no RoHS compliance.	Legacy industrial equipment where Pb-free mandate does not apply and thermal margin is >5 °C.	Select only if legacy board assembly requires SnPb solder compatibility and thermal derating is acceptable.
TB6560AHQ	Higher current rating (3.5 A peak), integrated oscillator, but requires external sense resistors and lacks internal diodes - larger footprint (HTSSOP-28).	High-torque applications (NEMA 17+) needing greater drive strength and microstepping resolution beyond 1/8-step.	Choose when >500 mA per phase is required and PCB space allows for additional passive components.

Compared with L6219D and TB6560AHQ, the E-L6219R offers optimal balance of integrated protection, ECOPACK® compliance, and compact SO-24 packaging for mid-range torque applications where simplicity and thermal reliability outweigh raw current headroom.

Availability

E-L6219R is available at Aetrix Electronics and suitable for industrial CNC positioning, medical lab automation, PCB routing, and automated test equipment requiring stable component supply and long-term lifecycle support.

Supply support for E-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, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.

The L6219R belongs to ST's motor driver product line, engineered specifically for cost-effective, integrated bipolar stepper control in resource-constrained embedded motion systems - emphasizing thermal robustness, logic-level interfacing, and minimal external component count.

FAQ

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

The E-L6219R supports continuous operation up to 10 V on the V_S pin, with absolute maximum rating of 30 V. Exceeding 10 V risks exceeding safe junction temperature due to increased conduction losses in the Darlington output stage, especially at 500 mA load. Operation above 10 V is only permissible for short transient conditions under strict thermal monitoring.

How does the PHASE input affect current direction in the motor windings?

A high logic level on the PHASE input causes current to flow from OUT A to OUT B through the connected winding; a low level reverses direction (OUT B to OUT A). This is enforced by internal H-bridge transistor switching logic and protected by a built-in delay circuit that prevents simultaneous conduction during transitions, eliminating shoot-through risk.

Can the E-L6219R drive unipolar stepper motors?

No - the E-L6219R is designed exclusively for bipolar stepper motors with center-tapped or dual-winding configurations requiring full-bridge current reversal. Its output architecture lacks the single-ended drive topology needed for unipolar motor phase excitation, and no internal configuration supports unipolar commutation schemes.

What is the role of the RC pin and how is off-time calculated?

The RC pin connects to an external resistor (R_T) and capacitor (C_T) that set the PWM off-time duration t_OFF = 1.1 × R_TC_T. This interval controls current decay rate during regulation cycles - for example, 56 kΩ and 820 pF yield ~50 μs off-time, establishing ~10 kHz effective switching frequency and limiting current ripple to <15% at 500 mA.

E-L6219R Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

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

Packaging:: Tube

Product Status:: Active

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

E-L6219R FAQ

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

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

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

3.What payment methods are accepted for E-L6219R?

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

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for E-L6219R?

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

Once your E-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 E-L6219R?

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

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

All E-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 E-L6219R meets industry standards.

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

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

Return procedure for E-L6219R:

1.Submit a request within 90 days.

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

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