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 L6227PDTR

Name: L6227PDTR
Brand: STMicroelectronics
SKU: L6227PDTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: L6227PDTR

Manufacturer:: STMicroelectronics

Category:: Motor Drivers, Controllers

Package:: 36-PowerBSSOP (0.433", 11.00mm Width)

Datasheet:: L6227PDTR.pdf

Description:: IC MTR DRV BIPOLAR 8-52V 36PWRSO

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:160

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

Product details

Overview

L6227PDTR from STMicroelectronics is a DMOS dual full-bridge motor driver IC with integrated PWM current controllers, designed for bipolar stepper and dual DC motor control. It operates from 8–52 V supply, delivers 2.8 A peak (1.4 A DC) per bridge, features 0.73 Ω typical R_DS(ON) at 25 °C, supports up to 100 kHz switching, and includes non-dissipative overcurrent protection and thermal shutdown.

For engineers reviewing the L6227PDTR datasheet, L6227PDTR pinout, L6227PDTR application, or L6227PDTR equivalent, this device is selected for precision current-regulated motion control where high-side sensing, slow-decay synchronous rectification, and independent bridge enable/control are required in industrial actuators, CNC stages, and automated optical systems.

Technical Context

The L6227PDTR integrates two fully independent DMOS full bridges in BCD technology, each with dedicated constant t_OFF PWM current regulation using external RC networks on RCA/RCB pins. Current sensing occurs via internal high-side current mirrors - eliminating external sense resistors and associated power loss.

Each bridge implements cross-conduction prevention via 1 µs internal deadtime, slow-decay recirculation with synchronous rectification, and bootstrap gate drive (VBOOT) for N-channel high-side MOSFETs. Protection includes non-dissipative overcurrent detection (2.8 A typ.), thermal shutdown at 165 °C, and undervoltage lockout (5.5–6.3 V turn-on threshold).

Key Specifications

Parameter	Value and Actual Design Meaning
Supply voltage range	8–52 V - supports wide-input industrial and automotive battery-supplied motor systems without external regulation.
Peak output current	2.8 A per bridge - enables driving NEMA17–NEMA23 stepper motors or dual 24 V DC gearmotors at rated torque.
R_DS(ON) (typ., 25 °C)	0.73 Ω (HS + LS combined) - limits conduction loss to ≤2.8 W per bridge at 1.4 A DC, easing thermal design.
PWM switching frequency	Up to 100 kHz - allows fine current ripple control and acoustic noise suppression in sensitive positioning applications.
Current regulation method	Dual independent constant t_OFF PWM - sets off-time via external RC (RCA/RCB), enabling precise, load-adaptive current chopping without microcontroller intervention.
Overcurrent protection	Non-dissipative high-side sensing (2.8 A typ.) - detects phase shorts without external shunt, preserving PCB area and efficiency.
Thermal shutdown	165 °C junction temperature - protects against sustained overload or poor heatsinking in enclosed enclosures.

Pinout & Package

Available in PowerSO-36 package (exposed thermal slug, pins 1/18/19/36 internally tied to GND). Pinout validated per STMicroelectronics DocID9453 Rev 3 (Figure 2, Table 4).

Pin/Terminal	Circuit Role	Design Meaning
IN1A, IN2A, IN1B, IN2B	Bridge logic inputs	TTL/CMOS-compatible control signals defining H-bridge direction (forward/reverse/brake); require no level-shifting.
ENA, ENB	Bridge enable / fault output	Active-high enables; open-drain fault pull-down (4 mA) during overcurrent/thermal events - enables auto-retry with RC timing.
OUT1A, OUT2A, OUT1B, OUT2B	Power outputs	DMOS full-bridge terminals - directly connect to motor windings; support bidirectional current flow with synchronous rectification.
SENSEA, SENSEB	Current sense reference	Internally connected to high-side current mirror outputs - no external resistor needed; referenced to GND for OCD.
VREFA, VREFB	PWM reference voltage	Analog input (0–5 V) setting target current magnitude; 0.5 V = ~1.4 A with typical R_SENSE = 0.1 Ω (if used externally).
RCA, RCB	PWM off-time timing	RC network node - t_OFF ≈ 0.6 × R × C + 1 µs deadtime; enables tuning decay rate per motor inductance.
VBOOT	Bootstrap supply	Drives high-side gates above VS; requires external 220 nF boot capacitor and charge pump (VCP, 600 kHz).
GND (pins 1,18,19,36)	Power & signal ground	Exposed thermal slug connection - must be soldered to large copper pour for R_th-j-amb ≤16 °C/W (PowerSO36).

Key Features

Feature	Design Value
Dual independent PWM current controllers	Separate RCA/VREFA and RCB/VREFB allow asymmetric current profiles for hybrid stepper microstepping or differential DC motor loads.
Slow-decay synchronous rectification	Reduces power dissipation during current recirculation vs. fast decay - critical for maintaining torque at low speeds in stepper applications.
Non-dissipative overcurrent protection	Eliminates 1–2 W shunt resistor losses and associated thermal management - improves system efficiency and simplifies layout.
Cross-conduction protection	Guaranteed 0.5–1 µs deadtime prevents shoot-through during switching transitions - ensures robust operation under transient conditions.
Integrated fast freewheeling diodes	Reduces external component count and board space; diode recovery time (300 ns) supports 100 kHz PWM without voltage spikes.

Applications

Industrial CNC Positioning Stage

Bipolar Stepper Motor Driver

Use Scenario: Precision open-loop positioning of linear actuators in CNC milling fixtures with ±1 µm repeatability.

IC Role / Device Role / Timing Role: Dual full-bridge driver executing microstepping waveforms; PWM current controller maintains consistent torque across speed range.

Use Value: Constant t_OFF regulation eliminates current droop at low speeds, preventing step loss during acceleration/deceleration phases.

Use Scenario: Driving NEMA17 bipolar stepper in automated lab equipment requiring silent, vibration-free motion.

IC Role / Device Role / Timing Role: Full-bridge H-bridge with slow-decay mode and 100 kHz PWM - minimizes audible noise and mechanical resonance.

Use Value: Synchronous rectification reduces heat generation by >30% vs. diode-based decay, enabling compact enclosure without forced air cooling.

Dual DC Motor Actuator

Automated Optical Shutter System

Use Scenario: Independent control of two 24 V brushed DC motors for robotic gripper jaw and wrist rotation.

IC Role / Device Role / Timing Role: Two isolated full-bridges with independent ENA/ENB enables coordinated motion or fault-isolated operation.

Use Value: Non-dissipative OCD allows immediate short-circuit detection on either motor without de-rating total system power budget.

Use Scenario: High-speed shutter actuation in spectroscopy instruments requiring <5 ms response and zero position drift.

IC Role / Device Role / Timing Role: Precision current-regulated driver for voice-coil or small stepper; VREF stability (<±5 mV offset) ensures repeatable force.

Use Value: 1 µs blanking time suppresses diode reverse-recovery spikes - prevents false current-limit triggering during rapid direction reversals.

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
TB6600HG	Higher peak current (4.5 A), but no integrated current controller - requires external DAC + comparator loop.	Requires more complex PCB layout and firmware for current regulation; lacks non-dissipative OCD.	Select when higher current headroom is needed and system already implements closed-loop current control.
DRV8825	Microstepping-focused; only single bridge (dual requires two ICs); lower voltage max (45 V); uses external sense resistors.	Optimized for low-noise stepper control but increases BOM cost and thermal footprint for dual-motor systems.	Select for cost-sensitive, low-power stepper-only designs where microstepping resolution >1/32 is mandatory.

Compared with TB6600HG and DRV8825, the L6227PDTR uniquely integrates dual independent PWM current controllers with non-dissipative OCD in a single PowerSO36 package - reducing system-level component count, PCB area, and thermal overhead for industrial dual-motor motion control.

Availability

L6227PDTR is available at Aetrix Electronics and suitable for industrial CNC positioning stages, bipolar stepper motor drivers, dual DC motor actuators, and automated optical shutter systems requiring stable component supply across multi-year production cycles.

Supply support for L6227PDTR 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, specializing in power management, motion control, and automotive-grade analog/mixed-signal ICs.

The L6227PDTR belongs to ST's L62xx motor driver family, engineered specifically for high-efficiency, high-reliability industrial motion control where integrated protection, thermal robustness, and minimal external components are critical.

FAQ

What is the maximum continuous output current per bridge?

The L6227PDTR supports 1.4 A RMS continuous output current per bridge at T_j ≤ 125 °C with adequate PCB copper area (≥6 cm² thermal pad, 16 vias). Peak current reaches 2.8 A for <1 ms pulses. Derating is required above 100 °C junction temperature per the R_th-j-amb = 16 °C/W curve in the datasheet.

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

It uses integrated high-side current mirrors that deliver a precise 1/2000 fraction of the output current to the SENSEA/SENSEB pins. This mirrored current is compared to an internal reference; when exceeded, the EN pin is pulled low via an open-drain transistor - eliminating external shunts and their 1–2 W power loss.

Can the L6227PDTR drive unipolar stepper motors?

No - the L6227PDTR is designed exclusively for bipolar stepper and dual DC motor topologies. Its dual full-bridge architecture requires four-terminal (center-tapless) windings. Unipolar steppers require five- or six-wire configurations with common taps, incompatible with this device's output structure.

What is the minimum recommended VBOOT capacitor value?

ST specifies a minimum 220 nF ceramic capacitor between VBOOT and VSA/VSB (with X7R dielectric, 16 V rating). This value ensures sufficient charge reservoir for high-side gate drive during 100 kHz PWM operation; smaller values risk shoot-through due to insufficient bootstrap voltage hold-up.

L6227PDTR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: STSPIN L62

Package/Case:: 36-PowerBSSOP (0.433", 11.00mm Width)

Packaging:: Tape & Reel (TR)

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:: 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:: Surface Mount

Supplier Device Package:: PowerSO-36 Slug Up

L6227PDTR FAQ

1.How can I place an order for L6227PDTR through Aetrix?

Please submit a Request for Quotation (RFQ) for L6227PDTR 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 L6227PDTR reliable?

The price and inventory of L6227PDTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L6227PDTR is usually 5 days.

3.What payment methods are accepted for L6227PDTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L6227PDTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for L6227PDTR?

L6227PDTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your L6227PDTR 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 L6227PDTR?

For technical support, including L6227PDTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L6227PDTR requirements.

6.How does Aetrix verify that L6227PDTR is sourced from the original manufacturer or authorized distributors?

All L6227PDTR 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 L6227PDTR meets industry standards.

7.What is the process for return or replacement of L6227PDTR?

All L6227PDTR units undergo pre-shipment inspection (PSI). If there is an issue with L6227PDTR, 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 L6227PDTR part is unused and in its original packaging.

Return procedure for L6227PDTR:

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…