Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

STMicroelectronics L6225N

Name: L6225N
Brand: STMicroelectronics
SKU: L6225N
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: L6225N

Manufacturer:: STMicroelectronics

Category:: Motor Drivers, Controllers

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

Datasheet:: L6225N.pdf

Description:: IC MTR DRV BIPLR 8-52V 20-PWRDIP

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:946

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

L6225N from STMicroelectronics is a DMOS dual full-bridge motor driver IC designed for bipolar stepper and dual/quad DC motor control, featuring 8–52 V operating supply voltage, 2.8 A peak output current (1.4 A DC), 0.73 Ω typical R_DS(ON) per switch at T_j = 25 °C, non-dissipative overcurrent protection, and integrated fast freewheeling diodes. It operates up to 100 kHz and supports paralleled operation for higher current or lower R_DS(ON).

For engineers reviewing the L6225N datasheet, L6225N pinout, L6225N application, or L6225N equivalent, this device serves as a high-voltage, thermally robust dual H-bridge with bootstrap gate drive, cross-conduction protection, thermal shutdown, and UVLO - critical for industrial motion control, robotics, and precision actuation where discrete MOSFET drivers would require complex external circuitry.

Technical Context

The L6225N integrates two independent full-bridge power stages using MultiPower-BCD technology, combining isolated DMOS transistors with CMOS/bipolar logic on a single die. Each bridge features matched high-side/low-side N-channel DMOS switches with intrinsic fast-recovery diodes (t_rr = 300 ns) and 1 µs typical dead-time control to prevent shoot-through.

It employs an internal charge pump (V_CP = 600 kHz square wave, 10 V amplitude) to generate V_BOOT for high-side gate drive, eliminating external high-voltage bias supplies. Overcurrent detection is implemented via on-die current-sensing cells in each high-side DMOS, delivering a precise fraction of load current without external sense resistors.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	8–52 V - supports wide industrial DC bus voltages including 24 V and 48 V systems without external regulation.
Peak Output Current	2.8 A per bridge - enables driving 1.4 A RMS bipolar stepper coils or dual DC motors under PWM control.
R_DS(ON) (HS + LS)	1.47 Ω typ. @ 25 °C - determines conduction loss; total bridge resistance defines I²R heating at rated load.
Switching Frequency	Up to 100 kHz - allows high-resolution microstepping and fast torque response in closed-loop motor control.
Thermal Shutdown	165 °C junction temperature with 15 °C hysteresis - protects against sustained overload or poor PCB heatsinking.
OCD Threshold	2.8 A typ. - triggers fault recovery via EN pin pull-down; programmable disable time via external R-C network.
Logic Compatibility	TTL/CMOS inputs with V_IL ≤ 0.8 V, V_IH ≥ 2.0 V - interfaces directly with microcontrollers and FPGA I/O without level shifters.

Pinout & Package

Package: PowerDIP20 (16+2+2), with slug internally connected to pins 1, 10, 11, and 20 (GND). Thermal resistance: R_th-j-pins = 13 °C/W; R_th-j-amb1 = 41 °C/W (6 cm² copper on bottom side).

Pin/Terminal	Circuit Role	Design Meaning
IN1A / IN2A / IN1B / IN2B	Bridge A/B Logic Inputs	Direct TTL/CMOS control of half-bridge states; truth table defines forward/reverse/brake/floating outputs.
ENA / ENB	Bridge A/B Enable Inputs	Active-high enable with integrated OCD fault feedback; must be driven via 100 kΩ pull-up + 5.6 nF capacitor for controlled recovery.
OUT1A / OUT2A / OUT1B / OUT2B	Power Outputs	High-current DMOS drain terminals; each pair forms one full H-bridge for bidirectional motor winding control.
SENSEA / SENSEB	Bridge A/B Sense Pins	Source connection point for current-sense resistor or direct GND tie; used by internal OCD circuitry.
VSA / VSB	Bridge A/B Power Supplies	Independent high-voltage rails (8–52 V); must be tied together externally and decoupled with ≥100 nF ceramic + bulk capacitor.
VBOOT	Bootstrap Supply Input	Accepts charge-pump voltage (VS + 10 V max) to drive high-side gates; requires external 220 nF boot capacitor.
VCP	Charge Pump Oscillator Output	600 kHz, 10 V square wave output driving external CP/DP network; not user-accessible for timing control.
GND (Pins 1,5,6,15,16,20)	Signal & Power Ground	Multiple low-inductance ground paths; pins 1/10/11/20 also serve as thermal slug connections to PCB copper.

Key Features

Feature	Design Value
Non-dissipative overcurrent protection	Eliminates external current-sense resistor and associated power loss; detects short-circuit at 2.8 A threshold via on-die sensing.
Integrated fast freewheeling diodes	t_rr = 300 ns enables efficient energy recirculation during PWM off-time without external diodes or snubbers.
Cross-conduction protection	1 µs programmable dead time prevents shoot-through during switching transitions, reducing risk of catastrophic failure.
Paralleled operation support	Enables configuration as single full bridge (R_DS(ON) = 0.37 Ω) or half bridge (R_DS(ON) = 0.18 Ω) with scaled current capability.
Bootstrap gate drive architecture	Internal charge pump generates V_BOOT for high-side N-MOSFETs, removing need for isolated DC-DC or floating supplies.

Applications

Bipolar Stepper Motor Control

Dual DC Motor Actuation

Use Scenario: Driving 2-phase bipolar stepper motors in CNC positioning stages requiring precise open-loop step resolution and holding torque.

IC Role / Device Role / Timing Role: Dual full-bridge driver providing independent phase current control with microsecond-level switching timing and dead-time management.

Use Value: Enables full-step/half-step/microstep modes without external gate drivers; integrated OCD prevents coil short damage during stall conditions.

Use Scenario: Controlling two independent DC motors in robotic arms for joint articulation - one for shoulder, one for elbow - with bidirectional rotation and braking.

IC Role / Device Role / Timing Role: Dual H-bridge interface between MCU GPIO and motor windings; ENA/ENB allow synchronized enable/disable across axes.

Use Value: Reduces BOM count vs. discrete MOSFET solutions; thermal shutdown prevents overheating during extended duty cycles in enclosed enclosures.

Industrial Valve Actuators

Automated Test Equipment (ATE) Load Drivers

Use Scenario: Driving solenoid-based linear actuators in pneumatic/hydraulic valve manifolds requiring 24–48 V DC operation and fail-safe current limiting.

IC Role / Device Role / Timing Role: High-voltage motor driver with UVLO and thermal protection ensuring safe operation during brown-out or ambient temperature rise.

Use Value: Non-dissipative OCD eliminates sense resistor drift issues; paralleled configuration supports >2 A peak loads while maintaining compact footprint.

Use Scenario: Simulating dynamic electronic loads in ATE systems by rapidly switching resistive or inductive DUTs during functional test sequences.

IC Role / Device Role / Timing Role: Programmable bidirectional current source/sink with fast turn-on/off delay (<800 ns) and precise current threshold triggering.

Use Value: Enables sub-millisecond load transients with repeatable current limits; integrated diodes suppress inductive kickback without external clamps.

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
TB6612FNG	Lower voltage (≤15 V), lower current (1.2 A peak), no bootstrap - uses internal LDO for high-side drive.	Suitable only for low-voltage robotics (e.g., 3.3/5 V MCU + 12 V motor); lacks 48 V capability and non-dissipative OCD.	Select when board space and cost are critical and supply voltage stays ≤13.5 V; avoid for industrial 24/48 V systems.
VNH7040AS	Single-channel high-side/low-side driver (not dual bridge); 41 V max, 14 A peak, SPI-configurable diagnostics.	Requires two devices for dual-bridge function; adds communication overhead but provides real-time fault reporting.	Choose when diagnostic visibility (overcurrent, temp, supply faults) is mandatory and system supports SPI interface.

Compared with TB6612FNG and VNH7040AS, the L6225N uniquely combines 52 V operation, true dual full-bridge integration, non-dissipative OCD, and bootstrap gate drive in a single PowerDIP20 package - making it optimal for cost-sensitive, high-voltage industrial motion control where external component count and thermal reliability are decisive.

Availability

L6225N is available at Aetrix Electronics and suitable for bipolar stepper motor control, dual DC motor actuation, industrial valve actuation, and automated test equipment load driving requiring stable component supply across long-lifecycle industrial programs.

Supply support for L6225N 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 power management, motor control, and automotive-grade analog/mixed-signal ICs.

The L6225N belongs to ST's MultiPower-BCD motor driver family, engineered for rugged industrial motion control with integrated protection, high-voltage tolerance, and thermal resilience in compact packages.

FAQ

What is the maximum continuous output current per bridge for L6225N?

The L6225N supports 1.4 A RMS continuous output current per bridge at T_j ≤ 125 °C, verified under 24 V supply and 30 kHz PWM with adequate PCB copper area (≥6 cm²). Peak current reaches 2.8 A for short durations (<1 ms), limited by internal overcurrent protection.

Can L6225N drive 48 V motors without external level-shifting circuitry?

Yes - the L6225N accepts logic inputs compatible with 3.3 V or 5 V MCUs while operating its power stage from 8–52 V. Its bootstrap gate drive architecture and integrated charge pump eliminate need for external high-voltage level shifters or isolated supplies.

How does the non-dissipative overcurrent protection work without a sense resistor?

Each high-side DMOS incorporates a precision current-mirror cell that delivers ~1/1000 of the load current to the SENSEA/SENSEB pins. This small current is compared to an internal reference; when exceeded, the EN pin is pulled low via an open-drain transistor to disable the bridge.

Is thermal pad soldering required for reliable operation at 1.4 A per bridge?

Yes - the PowerDIP20 package's slug (pins 1/10/11/20) must be soldered to ≥6 cm² of 35 µm-thick copper on the PCB bottom layer. Without this, junction temperature exceeds 125 °C at 1.4 A due to R_th-j-amb = 41 °C/W; proper heatsinking reduces it to safe levels.

L6225N Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: STSPIN L62

Package/Case:: 20-DIP (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:: DMOS

Step Resolution:: -

Applications:: General Purpose

Current - Output:: 1.4A

Voltage - Supply:: 8V ~ 52V

Voltage - Load:: 8V ~ 52V

Operating Temperature:: -25°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 20-PowerDIP

L6225N FAQ

1.How can I place an order for L6225N through Aetrix?

Please submit a Request for Quotation (RFQ) for L6225N 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 L6225N reliable?

The price and inventory of L6225N are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L6225N is usually 5 days.

3.What payment methods are accepted for L6225N?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L6225N transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for L6225N?

L6225N orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your L6225N 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 L6225N?

For technical support, including L6225N datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L6225N requirements.

6.How does Aetrix verify that L6225N is sourced from the original manufacturer or authorized distributors?

All L6225N 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 L6225N meets industry standards.

7.What is the process for return or replacement of L6225N?

All L6225N units undergo pre-shipment inspection (PSI). If there is an issue with L6225N, 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 L6225N part is unused and in its original packaging.

Return procedure for L6225N:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…