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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Full Half-Bridge (H Bridge) Drivers

STMicroelectronics E-L6204

Name: E-L6204
Brand: STMicroelectronics
SKU: E-L6204
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: E-L6204

Manufacturer:: STMicroelectronics

Category:: Full Half-Bridge (H Bridge) Drivers

Package:: 20-DIP (0.300", 7.62mm)

Datasheet:: E-L6204.pdf

Description:: IC BRIDGE DRIVER PAR 20POWERDIP

Quantity:: RFQ Add To RFQ list

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Inventory:1,090

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Product details

Overview

L6204 from STMicroelectronics is a dual full-bridge DMOS motor driver IC in MultiPower BCD technology, designed for bidirectional control of DC and stepper motors. It delivers 0.5A continuous DC current per bridge, supports up to 48V supply voltage, features integrated cross-conduction protection and thermal shutdown, and operates with TTL/CMOS-compatible logic inputs in industrial motor drive systems.

For engineers reviewing the L6204 datasheet, L6204 pinout, L6204 application, or L6204 equivalent, key selection criteria include its dual independent enable control, 1.2Ω R_DS(ON) at 25°C, bootstrap-driven high-side gate operation, and built-in current sensing via SENSE1/SENSE2 pins for chopper-mode current regulation.

Technical Context

The L6204 integrates two fully independent full-bridge power stages, each with four DMOS transistors (R_DS(ON) = 1.2Ω), dedicated ENABLE inputs, and external sense-resistor feedback paths. Its internal charge pump (VCP pin) generates V_BOOT to drive high-side gates without external high-voltage supplies.

Dead-time insertion (~500 ns) prevents shoot-through during switching transitions, while thermal shutdown activates at 150°C junction temperature and auto-recovers upon cooling. The device uses MultiPower BCD process to co-integrate robust power DMOS, precision analog sensing, and CMOS logic on one die.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	Up to 48 V - supports 24 V and 48 V industrial motor rails without external regulators
R_DS(ON) (per MOSFET)	1.2 Ω at 25°C - enables 0.5 A continuous output with <125 mW conduction loss per transistor
Output Current	0.5 A DC per bridge - rated for sustained unidirectional or bidirectional motor winding drive
Logic Compatibility	TTL/CMOS - accepts 0.8 V low / 2.0 V high thresholds, compatible with microcontroller GPIOs
Thermal Shutdown	150 °C - disables both bridges until junction cools, preventing latch-up or silicon damage
Cross-Conduction Protection	Integrated dead-time (~500 ns) - hardware-enforced non-overlap between high- and low-side drive signals
Sense Input Range	−1 V to +4 V - accommodates bidirectional current sensing and noise margin for RC filtering

Pinout & Package

Available in PowerDIP-20 (16+2+2) and SO-24+2+2 packages; both use four center pins (pins 5,6,15,16 in DIP; pins 19,20,21,22 in SO) as thermal pads connected to GND for PCB heat conduction - no external heatsink required at ≤70°C ambient with ≥8 cm² copper area.

Pin/Terminal	Circuit Role	Design Meaning
IN1–IN4	Digital bridge control inputs	Directly set H/L state of each half-bridge leg; support discrete PWM or step/direction logic
ENABLE1 / ENABLE2	Bridge enable inputs	Active-high logic; pulling low disables entire bridge A or B, forcing all outputs to high-Z
SENSE1 / SENSE2	Current sense inputs	Accept voltage drop across external shunt resistors to enable closed-loop chopper current limiting
VBOOT	High-side gate bootstrap supply	Receives >VS voltage from external charge pump (via VCP, diodes, capacitors) to drive upper DMOS gates
VCP	Charge pump oscillator output	Drives external diode-capacitor network to generate VBOOT; supports multi-IC sharing with single pump
OUT1–OUT4	Power outputs	Four half-bridge terminals - OUT1/OUT2 form Bridge A; OUT3/OUT4 form Bridge B
VS1 / VS2	Bridge supply inputs	Independent power rails for each bridge - allows dual-voltage motor control (e.g., 12 V + 24 V)

Key Features

Feature	Design Value
Dual independent full-bridge control	Separate IN/ENABLE per bridge enables asymmetric drive modes (e.g., one bridge in fast decay, one in slow decay)
Integrated thermal shutdown	Self-resetting protection at 150°C junction temperature - maintains system reliability without external monitoring circuitry
Bootstrap high-side drive	VCP oscillator + external components generate stable VBOOT - eliminates need for isolated DC-DC or transformer-based gate drives
MultiPower BCD process	Monolithic integration of DMOS power stages, bipolar analog sensing, and CMOS logic - reduces board space and interconnect parasitics
Current sense interface	Direct connection to external shunts with −1 V to +4 V input range - supports bidirectional current measurement and noise filtering

Applications

DC Motor Control

Stepper Motor Driver

Use Scenario: Bidirectional speed and direction control of brushed DC motors in industrial actuators and conveyor systems.

IC Role / Device Role / Timing Role: Dual full-bridge driver providing H-bridge polarity reversal and PWM-controlled current regulation via SENSE pins.

Use Value: Enables precise torque control using chopper-mode current limiting, reducing motor heating and improving efficiency at partial loads.

Use Scenario: Two-phase excitation of bipolar stepper motors in CNC positioning stages and automated test equipment.

IC Role / Device Role / Timing Role: Independent bridge A/B control allows full-step, half-step, and microstepping waveforms via coordinated IN/ENABLE sequencing.

Use Value: Integrated dead-time and thermal protection ensure reliable stepping under stall conditions without external fault management.

Industrial Valve Actuation

Lab Equipment Motion Control

Use Scenario: Driving solenoid valves and linear actuators requiring controlled inductive load switching in PLC I/O modules.

IC Role / Device Role / Timing Role: High-voltage (48 V) capable bridge with fast recirculation path via intrinsic DMOS body diodes.

Use Value: Eliminates need for external flyback diodes; R_DS(ON)-based conduction loss enables compact thermal design in sealed enclosures.

Use Scenario: Precision motion control in optical stage positioning and robotic sample handlers within analytical instruments.

IC Role / Device Role / Timing Role: Low-noise current sensing interface supports closed-loop current profiling for smooth acceleration/deceleration.

Use Value: TTL/CMOS compatibility ensures direct interfacing with FPGA or MCU timing engines, minimizing signal integrity risk.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual full-bridge motor driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STSPIN220	Integrated current regulation, 1.3 A peak, 5–45 V supply, QFN20 package	No external sense resistors needed; lacks independent VS1/VS2 rails	Preferred for space-constrained designs where programmable current limit replaces analog sensing
TB6612FNG	1.2 A peak per channel, 2.7–13.5 V supply, no bootstrap circuit, smaller footprint	Lower voltage rating limits use to 12 V systems; no VCP/VBOOT architecture	Selected when operating below 15 V and requiring simpler layout without charge pump components

Compared with STSPIN220 and TB6612FNG, the L6204 uniquely supports 48 V operation with independent bridge supplies and external sense flexibility-making it suitable for legacy industrial systems requiring field-serviceable current calibration and wide-input-range robustness.

Availability

L6204 is available at Aetrix Electronics and suitable for industrial motor drives, stepper positioning systems, and valve actuation circuits requiring stable component supply and long-term obsolescence management.

Supply support for L6204 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, specializing in automotive, industrial, and power management ICs with vertical manufacturing and broad analog/mixed-signal IP.

The L6204 belongs to ST's legacy motor driver portfolio developed for industrial automation and motion control, emphasizing ruggedness, wide supply range, and analog current sensing interoperability in harsh environments.

FAQ

What is the maximum continuous current per bridge on the L6204?

The L6204 is rated for 0.5 A DC continuous current per bridge under typical thermal conditions (T_amb ≤ 70°C with ≥8 cm² PCB copper). Peak pulsed current capability is 3 A, but sustained operation above 0.5 A requires careful thermal design and derating based on R_DS(ON) rise with junction temperature.

Can the L6204 drive a stepper motor in bipolar mode?

Yes - the L6204 supports true bipolar stepper motor operation by independently controlling both bridges (A and B) with complementary IN1/IN2 and IN3/IN4 sequences. Each bridge provides full H-bridge functionality, enabling forward/reverse current flow through each motor phase without external H-bridge add-ons.

Is an external charge pump required for high-side drive?

Yes - the L6204 requires an external charge pump consisting of two diodes and two capacitors connected to VCP and VBOOT pins to generate the boosted gate voltage (>VS) needed to fully enhance the high-side DMOS transistors. This is mandatory for proper operation of OUT1 and OUT3 in high-side configurations.

Does the L6204 include overcurrent protection?

The L6204 does not provide automatic overcurrent shutdown. Instead, it offers current sense inputs (SENSE1/SENSE2) for external analog current limiting - users must implement comparator-based blanking or chopper control externally. Thermal shutdown (150°C) acts as secondary protection against sustained overload.

E-L6204 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 20-DIP (0.300", 7.62mm)

Packaging:: Tube

Product Status:: Obsolete

Output Configuration:: Half Bridge (4)

Applications:: DC Motors, General Purpose

Interface:: Logic

Load Type:: Inductive

Technology:: BCDMOS

Rds On (Typ):: 1.2Ohm

Current - Output / Channel:: 500mA

Current - Peak Output:: 3A

Voltage - Supply:: 2V ~ 7V

Voltage - Load:: 12V ~ 48V

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

Grade:: -

Qualification:: -

Features:: Bootstrap Circuit

Fault Protection:: Over Temperature

Mounting Type:: Through Hole

Supplier Device Package:: 20-PowerDIP

E-L6204 FAQ

1.How can I place an order for E-L6204 through Aetrix?

Please submit a Request for Quotation (RFQ) for E-L6204 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-L6204 reliable?

The price and inventory of E-L6204 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for E-L6204 is usually 5 days.

3.What payment methods are accepted for E-L6204?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for E-L6204 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for E-L6204?

E-L6204 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your E-L6204 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-L6204?

For technical support, including E-L6204 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your E-L6204 requirements.

6.How does Aetrix verify that E-L6204 is sourced from the original manufacturer or authorized distributors?

All E-L6204 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-L6204 meets industry standards.

7.What is the process for return or replacement of E-L6204?

All E-L6204 units undergo pre-shipment inspection (PSI). If there is an issue with E-L6204, 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-L6204 part is unused and in its original packaging.

Return procedure for E-L6204:

1.Submit a request within 90 days.

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

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