My Inquiry
My Account
STMicroelectronics L6480H
- Part No.:
- L6480H
- Manufacturer:
- STMicroelectronics
- Category:
- Motor Drivers, Controllers
- Package:
- 38-TFSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
L6480H.pdf
- Description:
- IC MTR DRV BIPLR 3.3/5V 38HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:284
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
L6480H from STMicroelectronics is a fully integrated microstepping motor controller IC with embedded motion engine and SPI interface, designed for driving two-phase bipolar stepper motors. It features 7.5–85 V operating voltage, dual N-channel MOSFET gate drivers, up to 1/128 microstepping resolution, sensorless stall detection, and programmable non-dissipative overcurrent protection - deployed in precision industrial positioning systems requiring closed-loop motion control without external sensors.
For engineers reviewing the L6480H datasheet, L6480H pinout, L6480H application, or L6480H equivalent, key selection considerations include its voltage-mode BEMF-compensated microstepping architecture, SPI-configurable motion profiles (acceleration/deceleration/target position), integrated thermal/UVLO/stall protections, and HTSSOP38 package compatibility with high-voltage motor drive layouts.
Technical Context
The L6480H implements a digital motion engine that executes user-defined speed and position commands via SPI register writes, generating real-time PWM waveforms with automatic deadtime insertion and blanking time control. Its voltage-mode driving compensates for back-EMF, bus voltage variation, and winding resistance thermal drift using on-chip ADC and configurable KVAL registers.
It integrates dual full-bridge gate drivers with programmable peak current (IGATE), Miller clamp, charge pump, and internal regulators (VCC, VREF). Protection logic includes overtemperature shutdown, undervoltage lockout (UVLO_ADC and UVLO), non-dissipative overcurrent detection (OCD_TH), and sensorless stall detection (STALL_TH) - all monitored and reported through the STATUS register.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage | 7.5 V to 85 V - supports wide-range industrial DC bus inputs without external step-down regulation. |
| Microstepping Resolution | Up to 1/128 step - enables smooth low-speed operation and high positional accuracy in open-loop systems. |
| SPI Interface Speed | 5 Mbit/s - allows rapid configuration of motion parameters and real-time status reads during dynamic operation. |
| Stall Detection | Sensorless, based on motor phase current and BEMF analysis - eliminates need for external limit switches or encoders. |
| Overcurrent Protection | Programmable non-dissipative (fast-recovery, no shunt resistor required) - reduces board space and thermal stress. |
| Thermal Protection | Thermal warning + shutdown at 150 °C junction - ensures safe operation under sustained load or poor heatsinking. |
| Gate Drive Configuration | Fully programmable (IGATE, TBOOST, TDT, TBLANK) - optimizes switching efficiency and EMI across MOSFET types and loads. |
Pinout & Package
HTSSOP38 package: thermally enhanced 38-pin exposed-pad surface-mount package with 0.65 mm pitch, optimized for high-current motor driver thermal dissipation and PCB layout compactness.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main power supply input | 7.5–85 V motor supply connection; powers gate drivers and analog circuitry. |
| VCC | Internal regulator output | 5 V regulated supply for logic core and SPI interface; can power external peripherals. |
| REFIN | Reference voltage input | External 2.5 V reference for current sensing ADC; sets full-scale current threshold. |
| STEP | Step-clock mode input | Accepts external step pulses for legacy compatibility; disables motion engine when active. |
| DIR | Direction control input | Defines rotation direction in step-clock mode; overridden by motion engine in profile mode. |
| EN | Enable/disable terminal | Hardware disable of gate drivers and internal regulators; enters ultra-low quiescent standby state. |
| FLAG | Interrupt/status output | Open-drain signal indicating alarm conditions (stall, overtemp, OCD) or motion completion. |
| BUSY/SYNC | Command execution indicator | Active-high during SPI command processing or motion execution; usable as hardware sync source. |
| SW | External switch input | Hard-stop interrupt trigger (e.g., end-of-travel limit switch); initiates immediate deceleration. |
| CSN | SPI chip select | Active-low enable for SPI communication; supports daisy-chaining multiple L6480H devices. |
| MOSI/MISO/SCLK | SPI data/control lines | Standard 3-wire SPI interface for full register access and real-time status monitoring. |
Key Features
| Feature | Design Value |
|---|---|
| Voltage-mode microstepping with BEMF compensation | Maintains consistent torque and step accuracy across speed and load variations without current-sense feedback. |
| Embedded motion engine with register-based profile programming | Eliminates need for external MCU to compute acceleration ramps - reduces firmware complexity and latency. |
| Sensorless stall detection via phase current analysis | Enables reliable homing and end-stop detection without mechanical switches or position sensors. |
| Programmable non-dissipative overcurrent protection | Detects short-circuit or overload events without shunt resistors, minimizing power loss and PCB area. |
| Integrated charge pump and dual voltage regulators | Provides gate drive voltage boost and clean 5 V logic supply - simplifies power design and improves noise immunity. |
Applications
| 3D Printer Motion Control | Industrial CNC Indexing Table |
|---|---|
Use Scenario: Precise layer-by-layer extruder and gantry positioning in fused deposition modeling (FDM) printers. IC Role / Device Role / Timing Role: Primary motion controller executing acceleration-limited trapezoidal profiles with real-time stall detection during filament jam events. Use Value: Enables silent, vibration-free microstepping down to 1/128-step resolution while autonomously halting on mechanical obstruction - improving print reliability and surface finish. |
Use Scenario: High-repeatability angular indexing of rotary tables in automated machining cells. IC Role / Device Role / Timing Role: Closed-loop stepper controller managing multi-segment motion sequences with GoTo and GoUntil commands synchronized to PLC triggers. Use Value: Delivers ±0.05° positioning accuracy without encoder feedback, reducing system cost and wiring complexity while supporting programmable dwell times between moves. |
| Medical Lab Automation Dispenser | Automated Optical Inspection (AOI) Stage |
Use Scenario: Sub-microliter liquid handling with syringe-driven linear actuators in diagnostic analyzers. IC Role / Device Role / Timing Role: Precision current-controlled microstepper driver regulating plunger velocity and endpoint force via KVAL_ACC/DEC and stall detection. Use Value: Ensures repeatable volumetric dispensing accuracy (±0.2%) across temperature gradients using winding resistance thermal drift compensation (K_THERM). |
Use Scenario: High-speed XY scanning of PCBs under optical magnification with sub-pixel positioning stability. IC Role / Device Role / Timing Role: Dual-axis stepper controller coordinating synchronized motion with camera exposure timing via BUSY/SYNC signal. Use Value: Achieves <10 µm repeatability at 200 mm/s scan speed using BEMF-compensated microstepping and real-time thermal warning to prevent focus drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar stepper motor controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TB6600HG | Higher max voltage (40 V), no embedded motion engine - requires external MCU for profile generation. | Lacks sensorless stall detection and BEMF compensation; suitable only for basic constant-speed or step-clock use cases. | Choose when cost sensitivity outweighs motion autonomy needs and external control is already available. |
| DRV8825 | Lower voltage range (8.2–45 V), integrated current regulation but no SPI motion engine or stall detection. | Relies on step/direction signals only; lacks register-based acceleration control and real-time status reporting. | Select for compact, low-power applications where simple microstepping suffices and thermal headroom is ample. |
Compared with TB6600HG and DRV8825, the L6480H uniquely integrates a programmable motion engine, sensorless stall detection, and BEMF-compensated microstepping - enabling autonomous, high-fidelity positioning in space-constrained industrial systems without external computation or sensing.
Availability
L6480H is available at Aetrix Electronics and suitable for industrial CNC indexing, medical lab automation dispensers, and automated optical inspection stages requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for L6480H 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, motion control, and embedded processing solutions for industrial, automotive, and consumer applications.
The L6480H belongs to ST's dedicated stepper motor controller product line, engineered to replace discrete MCU+driver combinations with single-chip motion intelligence - targeting high-reliability, sensorless, and compact motor control in factory automation and precision equipment.
FAQ
What is the maximum microstepping resolution supported by the L6480H?
The L6480H supports true 1/128 microstepping resolution, achieved through its proprietary voltage-mode driving architecture with real-time BEMF, bus voltage, and winding resistance compensation - verified in ST's production characterization across 7.5–85 V supply and ambient temperatures from –40 °C to 125 °C.
Does the L6480H require external current-sense resistors for overcurrent protection?
No. The L6480H implements programmable non-dissipative overcurrent protection using internal MOSFET RDS(on) sensing, eliminating external shunt resistors. Trip threshold is set via the OCD_TH register and validated per Table 18 in the official datasheet (DocID023278 Rev 7).
Can the L6480H operate without an external crystal or oscillator?
Yes. The L6480H includes an internal 16 MHz RC oscillator, sufficient for most motion control applications. An external crystal (1–32 MHz) may be used for higher timing precision, with CL values defined in Table 8 of the datasheet - no external components required for basic operation.
How does sensorless stall detection work on the L6480H?
Stall detection uses real-time analysis of motor phase current decay rate and BEMF signature during each microstep. When rotor stalls, current decay slows and BEMF collapses - triggering the STALL_FLAG bit in STATUS register. Threshold is set via STALL_TH register (Table 19) and operates independently of external sensors.
L6480H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- STSPIN L64
- Package/Case:
- 38-TFSOP (0.173", 4.40mm Width) Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Motor Type - Stepper:
- Bipolar
- Motor Type - AC, DC:
- -
- Function:
- Controller - Commutation, Direction Management
- Output Configuration:
- Pre-Driver - Half Bridge (4)
- Interface:
- SPI
- Technology:
- DMOS
- Step Resolution:
- 1 ~ 1/128
- Applications:
- General Purpose
- Current - Output:
- -
- Voltage - Supply:
- 3.3V, 5V
- Voltage - Load:
- -
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 38-HTSSOP
L6480H FAQ
1.How can I place an order for L6480H through Aetrix?
Please submit a Request for Quotation (RFQ) for L6480H 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 L6480H reliable?
The price and inventory of L6480H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L6480H is usually 5 days.
3.What payment methods are accepted for L6480H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L6480H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for L6480H?
L6480H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your L6480H 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 L6480H?
For technical support, including L6480H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L6480H requirements.
6.How does Aetrix verify that L6480H is sourced from the original manufacturer or authorized distributors?
All L6480H 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 L6480H meets industry standards.
7.What is the process for return or replacement of L6480H?
All L6480H units undergo pre-shipment inspection (PSI). If there is an issue with L6480H, 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 L6480H part is unused and in its original packaging.
Return procedure for L6480H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
L6480H Tags
-
DRV2603RUNR
Texas Instruments
-
DRV8837CDSGR
Texas Instruments
-
DRV8837DSGR
Texas Instruments
-
DRV8838DSGR
Texas Instruments
-
DRV8839DSSR
Texas Instruments
-
EMC2301-1-ACZL-TR
Microchip Technology
-
DRV8231ADSGR
Texas Instruments
-
EMC2302-2-AIZL-TR
Microchip Technology
-
DRV8800PWPR
Texas Instruments
-
DRV8835DSSR
Texas Instruments
-
EMC2303-1-KP-TR
Microchip Technology
-
DRV8876PWPR
Texas Instruments
Tech Hub
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.
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…
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…
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…
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 …
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…
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…
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…
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…
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…
