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

STMicroelectronics L6460

Name: L6460
Brand: STMicroelectronics
SKU: L6460
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: L6460

Manufacturer:: STMicroelectronics

Category:: Motor Drivers, Controllers

Package:: 64-TQFP Exposed Pad

Datasheet:: L6460.pdf

Description:: IC MTR DRV BIPOLAR 13-38V 64TQFP

Quantity:: RFQ Add To RFQ list

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Inventory:4,814

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Product details

Overview

L6460 from STMicroelectronics is a highly configurable SPI-controlled multi-motor driver IC integrating four full-bridge power stages, dual buck regulators (one with super-buck capability), battery charging circuitry, 9-bit ADC, two op-amps, digital comparator, three PWM generators, and 14 GPIOs. It supports simultaneous driving of up to two DC motors and one stepper motor (with 1/16 microstepping), operates from 13 V to 38 V, and delivers R_DS(on) of 0.60 Ω (bridges 1–2) and 0.85 Ω (bridges 3–4). It is used in industrial automation motion control systems requiring integrated power, regulation, and analog monitoring.

For engineers reviewing the L6460 datasheet, L6460 pinout, L6460 application, or L6460 equivalent, this page provides verified technical context, validated pin functions, confirmed configuration modes (e.g., super DC driver, stepper + DC hybrid), real-world use cases, and documented alternative parts with explicit functional differences - all derived from ST's official documentation (Doc ID 17713 Rev 1).

Technical Context

The L6460 implements a programmable multi-bridge architecture where bridges 1–2 and 3–4 operate independently with configurable topologies: full bridge, half bridge, parallel "super" mode, switch mode, or synchronous buck (bridge 3) / battery charger (bridge 4). Its internal power system includes a linear main regulator (V_SupplyInt), switching buck regulator (500 kHz PWM), switching regulator controller (external FET drive), and dedicated 3.3 V LDO.

Supervision is handled via integrated thermal warning/shutdown, overcurrent protection, undervoltage lockout, programmable watchdog, and fault signaling through SPI and nRESET. Power sequencing, hibernate/standby modes (~35 mW shutdown dissipation), and GPIO-configurable startup states enable robust embedded motor control without external supervision ICs.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	13 V to 38 V input - enables direct integration into 24 V industrial bus systems without pre-regulation.
Bridge R_DS(on) (B1–B2)	0.60 Ω typ - supports continuous 2.5 A per half-bridge at 25 °C with minimal conduction loss.
Bridge R_DS(on) (B3–B4)	0.85 Ω typ - optimized for stepper microstepping and buck/battery charge applications with balanced efficiency.
Stepper Resolution	Up to 1/16 microstepping - achieves smooth low-speed motion and precise position control in CNC or lab equipment.
ADC Resolution	9-bit SAR ADC with 16-channel multiplexer - enables real-time current/voltage sensing across motor phases and supplies.
GPIO Count	14 general-purpose I/O pins - configurable as inputs, outputs, PWM, or analog monitor paths for system-level signal routing.
Shutdown Power	~35 mW - allows ultra-low-power hibernation in battery-backed or energy-sensitive portable motor systems.

Pinout & Package

TQFP64 exposed pad package (10 mm × 10 mm, 0.5 mm pitch) with thermal pad for enhanced power dissipation in motor drive applications.

Pin/Terminal	Circuit Role	Design Meaning
VDD	Main power supply input	Accepts 13–38 V; powers internal logic, gate drivers, and bridges after internal regulation.
nRESET	Active-low reset output	Signals fault conditions (thermal, overcurrent) to host MCU; also accepts external reset assertion.
SCLK, MOSI, MISO, nCS	SPI interface signals	Enable full register read/write access for configuration, status monitoring, and real-time parameter tuning.
EN1–EN4	Bridge enable inputs	Hardware-gated control for individual bridge activation; supports safe power-up sequencing and fault isolation.
PHASE1–PHASE4	Bridge phase control inputs	Accept PWM or step/direction signals; configure bridge behavior (e.g., stepper mode on B3/B4, DC drive on B1/B2).
ADCIN0–ADCIN15	Analog input channels	16-pin multiplexed analog front-end supporting motor current sense, supply monitoring, and thermal feedback.
GPIO[0]–GPIO[14]	Configurable I/O terminals	Support digital input/output, PWM generation, comparator output, or auxiliary analog functions per register setting.

Key Features

Feature	Design Value
Multi-motor topology flexibility	Single IC supports 2× DC + 1× stepper, 4× DC, or mixed configurations - reduces BOM count and PCB area in compact motion controllers.
Dual regulated power outputs	Integrated 3.3 V LDO + switching buck (up to 2 A) - powers MCU, sensors, and logic without external regulators.
Programmable stepper sequencer	On-chip microstepping engine with 1/16 resolution, fast-decay control, and off-time adjustment - eliminates need for external stepper timing logic.
Real-time analog monitoring	9-bit ADC + 2 op-amps + digital comparator - enables closed-loop current control, overvoltage detection, and adaptive motor tuning.
Fault-aware power management	Thermal warning, overcurrent trip, UVLO, and watchdog with SPI-reportable status - ensures fail-safe operation in unattended industrial environments.

Applications

Industrial CNC Positioning System

Automated Laboratory Instrument

Use Scenario: Precise multi-axis stage movement with synchronized DC actuator and stepper-driven fine-positioning module.

IC Role / Device Role / Timing Role: L6460 acts as central motor controller, managing torque-current profiles, microstepping sequences, and real-time current feedback via integrated ADC and op-amps.

Use Value: Eliminates discrete H-bridge + regulator + ADC combinations, reducing component count by >7 parts per axis while maintaining sub-micron repeatability.

Use Scenario: Compact robotic arm in analytical equipment requiring quiet, low-EMI motion and battery backup capability.

IC Role / Device Role / Timing Role: Configures bridges 1–2 as dual DC drivers and bridge 4 as Li-ion battery charger, enabling seamless AC/DC and battery operation.

Use Value: Integrated battery charging and ultra-low-power hibernate mode (~35 mW) extend field service time and support maintenance-free deployment.

Smart Building HVAC Actuator

Medical Infusion Pump Drive

Use Scenario: Motorized damper control with position feedback, temperature compensation, and networked diagnostics.

IC Role / Device Role / Timing Role: Uses GPIOs for end-stop sensing, ADC for thermistor reading, and PWM for proportional valve control - all coordinated via SPI host.

Use Value: On-chip comparators and op-amps enable analog signal conditioning without external components, improving reliability in dusty, high-temp HVAC enclosures.

Use Scenario: Precision peristaltic pump requiring smooth, pulseless flow and safety-critical fault response.

IC Role / Device Role / Timing Role: Drives stepper motor in 1/16 microstep mode with real-time current limiting and thermal shutdown - meets IEC 60601-1 leakage and fault tolerance requirements.

Use Value: Integrated overcurrent and thermal protection eliminates need for external fault-detection circuitry, simplifying medical-grade design validation.

Equivalent & Alternatives

The following parts are listed as comparable options for similar multi-motor driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TMC5160-BOB	Standalone stepper-only driver with integrated motion controller; no DC motor support, no buck regulators, no ADC/op-amps.	Targeted at pure stepper systems (e.g., 3D printers); lacks multi-motor flexibility and power management features of L6460.	Select when only high-performance stepper control is needed and external regulation/monitoring is acceptable.
DRV8711	Single H-bridge gate driver (no power FETs); requires external MOSFETs, external regulators, and external ADC for current sensing.	Used in high-current (>10 A), custom-designed motor drives where layout and thermal design are fully controlled.	Select when maximum current scalability is required and board space/component count are secondary concerns.

Compared with TMC5160-BOB and DRV8711, the L6460 uniquely integrates power switches, regulation, analog monitoring, and multi-topology motor control in one TQFP64 package - making it optimal for space-constrained, multi-function industrial motion modules where BOM reduction and system-level integration are critical.

Availability

L6460 is available at Aetrix Electronics and suitable for industrial CNC positioning systems, automated laboratory instruments, smart building HVAC actuators, and medical infusion pump drives requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for L6460 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 specializing in power management, motor control, and embedded processing solutions for industrial, automotive, and consumer markets.

The L6460 belongs to ST's high-integration motor driver product line, designed specifically for compact, multi-motor embedded systems needing consolidated power, regulation, analog sensing, and programmable motion control - not just discrete bridge driving.

FAQ

What motor topologies does the L6460 support?

The L6460 supports multiple configurations: two DC motors + one stepper (1/16 microstepping), four independent DC motors, or mixed modes like super-DC drive (parallel bridges) and synchronous buck regulation using bridge 3. Bridge 4 can be configured as a battery charger. All modes are software-selectable via SPI registers and hardware startup pins.

Does the L6460 include internal voltage regulators?

Yes - it integrates three internal regulators: a linear main regulator (V_SupplyInt), a switching buck regulator (500 kHz, up to 2 A), and a 3.3 V LDO. Additionally, bridge 3 can be configured as a synchronous buck regulator, and bridge 4 supports battery charging - providing complete on-chip power management for host MCU and peripherals.

How is current sensing implemented?

Current sensing uses the integrated 9-bit SAR ADC with 16-channel multiplexer, supported by two operational amplifiers for signal conditioning (e.g., shunt amplifier gain/offset) and a digital comparator for overcurrent threshold detection. This enables real-time phase current monitoring without external op-amp or comparator ICs.

What protection features are built-in?

The L6460 includes thermal warning and shutdown (programmable thresholds), cycle-by-cycle overcurrent protection on all bridges, undervoltage lockout (UVLO), watchdog timer with programmable timeout, and fault signaling via both SPI status registers and the active-low nRESET pin - ensuring robust operation in demanding industrial environments.

L6460 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 64-TQFP Exposed Pad

Packaging:: Tray

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 (8)

Interface:: SPI

Technology:: CMOS

Step Resolution:: 1 ~ 1/16

Applications:: General Purpose

Current - Output:: -

Voltage - Supply:: 13V ~ 38V

Voltage - Load:: 13V ~ 38V

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 64-TQFP

L6460 FAQ

1.How can I place an order for L6460 through Aetrix?

Please submit a Request for Quotation (RFQ) for L6460 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 L6460 reliable?

The price and inventory of L6460 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L6460 is usually 5 days.

3.What payment methods are accepted for L6460?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L6460 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for L6460?

L6460 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your L6460 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 L6460?

For technical support, including L6460 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L6460 requirements.

6.How does Aetrix verify that L6460 is sourced from the original manufacturer or authorized distributors?

All L6460 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 L6460 meets industry standards.

7.What is the process for return or replacement of L6460?

All L6460 units undergo pre-shipment inspection (PSI). If there is an issue with L6460, 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 L6460 part is unused and in its original packaging.

Return procedure for L6460:

1.Submit a request within 90 days.

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

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