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

STMicroelectronics E-L6219

Name: E-L6219
Brand: STMicroelectronics
SKU: E-L6219
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: E-L6219

Manufacturer:: STMicroelectronics

Category:: Motor Drivers, Controllers

Package:: 24-PowerDIP (0.300", 7.62mm)

Datasheet:: E-L6219.pdf

Description:: IC MOTOR DRVR BIPOLAR 24POWERDIP

Quantity:: RFQ Add To RFQ list

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Inventory:4,166

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Product details

Overview

E-L6219 from STMicroelectronics is a bipolar stepper motor driver IC with dual full-bridge output stage, capable of delivering up to 750 mA per winding at 10–46 V supply, supporting half-step, full-step, and microstepping modes in industrial motion control systems.

For engineers reviewing the E-L6219 datasheet, E-L6219 pinout, E-L6219 application, or E-L6219 equivalent, key selection criteria include its integrated PWM current control, thermal shutdown protection, SO24 package layout, and logic-compatible phase/input interface for microprocessor-driven stepper systems.

Technical Context

The L6219 implements switch-mode current regulation using internal comparators, a monostable single-pulse generator (toff = 1.1·RT·CT), and Darlington/saturated transistor H-bridges with built-in recirculation diodes. Current level selection (off, 1/3, 2/3, or full 750 mA) is controlled via two logic inputs per bridge.

Phase inputs determine current direction per winding with Schmitt-trigger noise immunity and delay circuitry to prevent cross-conduction; VREF sets current threshold (1.5–7.5 V), while sense resistor voltage feedback (Vsense = 10 V at trip) enables precise closed-loop current limiting.

Key Specifications

Parameter	Value and Actual Design Meaning
Output current (continuous)	±750 mA per winding - sustains rated torque without external heatsinking under typical ambient conditions
Supply voltage range	10 V to 46 V - supports wide-range unregulated motor supplies, including 24 V and 36 V industrial rails
Current control resolution	4 discrete levels (off, 1/3, 2/3, full) - selectable via I0/I1 logic inputs for torque/speed optimization
Thermal shutdown threshold	170 °C junction temperature - disables outputs to prevent permanent damage during overload or poor PCB thermal design
Output saturation voltage	0.3–1.6 V (sink/source, 500–750 mA) - determines conduction loss and heat dissipation per bridge leg
Logic supply voltage	VSS = 4.75–5.25 V - compatible with standard 5 V TTL/CMOS microcontrollers and FPGA I/O

Pinout & Package

The E-L6219 is housed in a 24-pin Small Outline (SO24) package with exposed thermal pad (pins 6, 7, 18, 19 as GND for heat conduction). Pin numbering follows top-view layout with dual-symmetrical signal grouping (e.g., pins 1/2 and 5/21 are paired outputs).

Pin/Terminal	Circuit Role	Design Meaning
1, 2 / 5, 21	Output A / Output B	H-bridge output terminals per winding - connect directly to stepper motor phase windings
3, 23	Sense resistor	Low-side emitter connection point for external current-sense resistor (Rs) - sets current limit scaling
4, 22	Comparator input	Feedback node for Rs voltage - triggers PWM off-time when sensed current exceeds VREF-derived threshold
6, 7, 18, 19	Ground	Common return path for logic, power, and thermal conduction - must be low-impedance copper pour
8, 20 / 9, 17	Input 0 / Input 1	Logic-select lines for current level (off/low/medium/full) - TTL-compatible, open-high default
10, 16	Phase	Direction control input - high = current flows OUTA → OUTB; includes Schmitt trigger and switching delay
11, 15	Reference voltage	Analog reference input (1.5–7.5 V) - scales full-scale current (e.g., 5 V → 750 mA; 2 V → 300 mA)
12, 14	RC network	Timing node for PWM off-time (toff = 1.1·RT·CT) - sets decay duration during current regulation cycle
13	VSS	Logic supply input (4.75–5.25 V) - powers internal logic, comparators, and drivers' base bias circuits
24	VS	Motor supply input (10–46 V) - powers H-bridge output stage; decoupling capacitor required near pin

Key Features

Feature	Design Value
Dual full-bridge output stage	Four Darlington source + four saturated sink transistors with eight integrated clamp diodes - eliminates need for external flyback components
Internal PWM current control	Monostable pulse generator with user-settable toff (via RC network) - enables stable constant-current operation across speed ranges
Cross-conduction protection	Hardware delay on Phase input transitions - prevents shoot-through during direction reversal in bipolar stepping
Thermal shutdown circuitry	Junction-sensing shutdown at 170 °C with automatic recovery - protects against sustained overloads or inadequate PCB cooling
Built-in current sense interface	Dedicated Sense/Comparator pins with low-pass filtering - supports precision current regulation without external op-amps or ADCs

Applications

Industrial CNC Positioning

Medical Infusion Pumps

Use Scenario: Open-loop position control of X/Y/Z axes in benchtop CNC mills using 1.8° bipolar stepper motors.

IC Role / Device Role / Timing Role: Dual-H-bridge driver executing microstep sequences under microcontroller command; provides regulated phase current independent of back-EMF.

Use Value: Enables smooth low-speed motion and high holding torque (750 mA/winding) without external current-sense amplifiers or gate drivers.

Use Scenario: Precise syringe actuation in portable IV infusion devices requiring silent, repeatable step accuracy.

IC Role / Device Role / Timing Role: Bipolar stepper controller managing bidirectional motor rotation with programmable current profiles to match fluid viscosity and tubing compliance.

Use Value: Integrated thermal protection prevents overheating during extended dwell periods; SO24 footprint simplifies compact PCB layout.

Automated Laboratory Analyzers

3D Printer Extruder Control

Use Scenario: Sample carousel indexing and reagent dispensing in clinical analyzers operating in temperature-controlled enclosures.

IC Role / Device Role / Timing Role: Stepper driver interfacing with RS-485 or CAN-connected motion controller; handles 24 V unregulated supply with ±10% tolerance.

Use Value: Wide 10–46 V input range accommodates aging power supplies; logic-level inputs simplify isolation design for noise-sensitive diagnostic environments.

Use Scenario: Filament feed control in desktop FDM printers where extruder motor must respond rapidly to acceleration commands.

IC Role / Device Role / Timing Role: High-bandwidth current-regulated driver enabling fast direction reversal and microstepping at >10 kHz step rates.

Use Value: Low output saturation voltage (0.3 V @ 500 mA) minimizes self-heating during rapid pulsing, improving long-run reliability.

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 peak current (4.5 A), external MOSFETs, no integrated diodes - requires more external components and layout effort	Targeted at high-torque NEMA23+ motors; lacks integrated thermal shutdown and sense-resistor interface	Select when >1 A per phase is required and board space allows discrete power stage design
DRV8825	Integrated microstepping up to 1/32, lower max voltage (45 V), 2.2 A peak - uses current DAC instead of analog VREF scaling	Optimized for low-noise, high-resolution positioning; requires external current-sense resistors and has stricter VDD sequencing	Prefer for quiet operation and fine positional resolution where 2.2 A capability suffices and 5 V logic is available

Compared with TB6600HG and DRV8825, the E-L6219 offers simpler system integration via built-in diodes and analog VREF-based current scaling, making it ideal for cost-sensitive, medium-current (≤750 mA) industrial motion designs where layout area and BOM count are constrained.

Availability

E-L6219 is available at Aetrix Electronics and suitable for industrial CNC positioning, medical infusion pumps, automated laboratory analyzers, and 3D printer extruder control requiring stable component supply across multi-year production cycles.

Supply support for E-L6219 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 L6219 belongs to ST's legacy motor driver product line, engineered specifically for robust, cost-effective bipolar stepper control in industrial automation and precision equipment where reliability under unregulated supply conditions is critical.

FAQ

What is the maximum continuous output current per winding for the E-L6219?

The E-L6219 delivers up to 750 mA continuous current per winding at Tj ≤ 150 °C, with peak startup current up to 1 A. This rating assumes proper PCB copper area for thermal dissipation (Rthj-amb ≤ 75 °C/W) and operation within the 10–46 V supply range. Exceeding 750 mA continuously risks triggering thermal shutdown.

Does the E-L6219 require external flyback diodes?

No - the E-L6219 integrates eight clamp diodes (four per H-bridge) for current recirculation, eliminating the need for external flyback diodes. These diodes are rated for 750 mA continuous forward current and 50 V reverse voltage, matching the device's operational limits and simplifying PCB layout.

How is current regulation set on the E-L6219?

Current regulation is set by three elements: (1) an external sense resistor (Rs) placed between Sense pins and GND, (2) the analog VREF voltage (1.5–7.5 V) applied to pins 11/15, and (3) logic inputs I0/I1 (pins 8/20 and 9/17) selecting one of four current levels. The actual current equals (VREF / 10) / Rs, scaled by the I0/I1 selection factor (0, 1/3, 2/3, or 1).

Can the E-L6219 drive unipolar stepper motors?

No - the E-L6219 is designed exclusively for bipolar stepper motors with center-tapped or dual-winding configurations. Its dual full-bridge architecture requires four-terminal connection per phase and cannot interface with the five- or six-wire topology of unipolar steppers. For unipolar applications, ST recommends the L297/L298 or modern alternatives like the STSPIN220.

E-L6219 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 24-PowerDIP (0.300", 7.62mm)

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:: -20°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 24-PowerDIP

E-L6219 FAQ

1.How can I place an order for E-L6219 through Aetrix?

Please submit a Request for Quotation (RFQ) for E-L6219 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-L6219 reliable?

The price and inventory of E-L6219 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for E-L6219 is usually 5 days.

3.What payment methods are accepted for E-L6219?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for E-L6219 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for E-L6219?

E-L6219 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your E-L6219 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-L6219?

For technical support, including E-L6219 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your E-L6219 requirements.

6.How does Aetrix verify that E-L6219 is sourced from the original manufacturer or authorized distributors?

All E-L6219 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-L6219 meets industry standards.

7.What is the process for return or replacement of E-L6219?

All E-L6219 units undergo pre-shipment inspection (PSI). If there is an issue with E-L6219, 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-L6219 part is unused and in its original packaging.

Return procedure for E-L6219:

1.Submit a request within 90 days.

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

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