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

STMicroelectronics STSPIN840

Name: STSPIN840
Brand: STMicroelectronics
SKU: STSPIN840
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STSPIN840

Manufacturer:: STMicroelectronics

Category:: Motor Drivers, Controllers

Package:: 24-TFQFN Exposed Pad

Datasheet:: STSPIN840.pdf

Description:: IC MOTOR DRIVER 7V-45V 24TQFPN

Quantity:: RFQ Add To RFQ list

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Inventory:1,205

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Product details

Overview

STSPIN840 from STMicroelectronics is a compact dual brushed DC motor driver IC integrating two fully protected full-bridge power stages and independent PWM current controllers in a 4 × 4 mm QFN-24 package. It delivers up to 1.5 Arms per bridge (3 Arms in parallel mode), operates from 7–45 V, features 1 Ω typ. HS+LS R_DS(on), and supports adjustable OFF-time current regulation via external ROFF resistor.

For engineers reviewing the STSPIN840 datasheet, STSPIN840 pinout, STSPIN840 application, or STSPIN840 equivalent, key selection considerations include dual-motor bidirectional control capability, non-dissipative overcurrent protection, parallel-mode configuration for single high-current bridge operation, and low 45 µA standby current consumption.

Technical Context

The STSPIN840 implements two independent PWM current controllers with user-adjustable OFF time via external resistor on TOFF pin (10–150 µs range) and reference voltage inputs (REFA/REFB, 0.1–1 V). Current sensing uses external shunt resistors connected to SNSA/SNSB pins, with comparator offset ±15 mV and blanking time of 1.5 µs.

It integrates full protection logic: non-dissipative overcurrent detection (3–3.5 A threshold), thermal shutdown at 160 °C with 40 °C hysteresis, UVLO (6.0–6.5 V turn-on, 0.4 V hysteresis), and short-circuit protection. Parallel mode enables synchronized control of both bridges using ENA/PWMA/PHA, disabling bridge B's controller while sharing sense and output paths.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	7–45 V - Supports wide industrial DC bus ranges including 12 V, 24 V, and 36 V systems without external regulation.
Output Current	1.5 Arms per bridge (3 Arms in parallel mode) - Enables driving two medium-power brushed motors or one high-torque motor with reduced thermal stress.
R_DS(on) HS+LS	1 Ω typ. per bridge (500 mΩ typ. in parallel mode) - Minimizes conduction loss and junction temperature rise under continuous load.
Standby Current	<45 µA - Allows battery-powered or energy-sensitive applications to maintain ultra-low quiescent power during idle states.
Current Sensing	External shunt-based (SNSA/SNSB) with ±15 mV offset - Enables precise peak-current control with user-selected R_SENSE values matching target I_LOAD,peak.
Protections	Non-dissipative OCP, thermal shutdown (160 °C), UVLO, short-circuit - Eliminates need for external fault-handling circuitry in harsh environments.
Package	TFQFPN 4 × 4 × 1.05 mm, 24-lead - Provides high power density and thermal performance via exposed pad (R_thJCbot = 5.9 °C/W).

Pinout & Package

STSPIN840 is housed in a TFQFPN (Thin Fine-Pitch Quad Flat No-lead) 4 × 4 mm, 24-lead package with exposed thermal pad (EPAD) requiring PCB connection to GND for optimal thermal dissipation and EMI control.

Pin/Terminal	Circuit Role	Design Meaning
1 REFA	Analog input	Sets peak current limit for Bridge A via V_REF = R_SENSE × I_LOAD,peak; 0.1–1 V range ensures noise-immune precision.
4 SNSA / 15 SNSB	Analog input	Connects to external shunt resistor; monitors voltage drop for real-time current regulation and overcurrent detection.
7–8 OUTA1/OUTA2 / 11–12 OUTB1/OUTB2	Power output	Full-bridge outputs; support bidirectional motor drive; paralleled in PARALLEL mode for 3 Arms capability.
16 STBY\RESET	Logic input	Active-low entry into sub-45 µA standby; resets internal logic on exit - critical for power-gated motion subsystems.
17 ENA\FAULTA / 18 ENB\FAULTB	Logic input / open-drain output	Enable/disable respective bridge; fault indication pulls low on OCP, thermal shutdown, or UVLO - simplifies system-level fault reporting.
23 PARALLEL	Logic input	High-level activation configures dual bridges as single high-current stage; disables Bridge B controller and synchronizes PWM/PH signals.
24 TOFF	Analog input	Adjusts PWM OFF time (10–150 µs) via external resistor; determines current decay rate and average motor current stability.

Key Features

Feature	Design Value
Dual independent PWM current controllers	Each bridge has dedicated REFA/REFB and SNSA/SNSB inputs enabling asymmetric motor tuning (e.g., different torque profiles).
Parallel operation mode	Configures both bridges as one 3 Arms full-bridge with 500 mΩ R_DS(on), reducing board area and thermal footprint vs. discrete solutions.
Non-dissipative overcurrent protection	Detects overcurrent without shunt heating or power-stage derating; triggers immediate fault latch without external components.
Ultra-low standby current	<45 µA consumption allows integration into always-on industrial controllers without compromising battery life or standby efficiency.
Integrated thermal shutdown with hysteresis	160 °C trip point + 40 °C hysteresis prevents thermal cycling; R_thJCbot = 5.9 °C/W enables >2 W dissipation on standard 2-layer PCBs.

Applications

Industrial Automation

Medical Devices

Use Scenario: Precision actuation in programmable robotic arms and linear actuators used in packaging lines and CNC tool changers.

IC Role / Device Role / Timing Role: Dual full-bridge driver controlling two independent brushed DC motors for coordinated joint movement and end-effector positioning.

Use Value: Adjustable OFF-time current control ensures smooth torque delivery across variable loads; parallel mode supports high-inertia axis acceleration without external MOSFETs.

Use Scenario: Motorized positioning in infusion pumps, ventilator flow valves, and diagnostic imaging gantries.

IC Role / Device Role / Timing Role: Safety-critical motor driver delivering regulated bidirectional motion with integrated fault reporting to MCU via FAULTA/FAULTB pins.

Use Value: Non-dissipative OCP and thermal shutdown meet IEC 60601-1 requirements; <45 µA standby enables battery backup compliance.

Office Automation

Stage Lighting

Use Scenario: Paper feed, stapling, and scanning mechanisms in multifunction printers and document finishers.

IC Role / Device Role / Timing Role: Compact dual-motor driver managing simultaneous paper transport and finishing operations within tight mechanical envelopes.

Use Value: 4 × 4 mm QFN package saves PCB space; UVLO and short-circuit protection prevent damage during paper jams or mechanical stalls.

Use Scenario: Pan/tilt and focus adjustment in intelligent moving-head lighting fixtures and LED beam projectors.

IC Role / Device Role / Timing Role: High-reliability motor driver operating in thermally constrained enclosures with frequent direction reversals and PWM modulation.

Use Value: 45 V max supply accommodates 48 V PoE-derived rails; R_DS(on) = 1 Ω minimizes self-heating during sustained 100% duty cycle operation.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual brushed DC motor driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TB6612FNG	Lower voltage range (2.7–13.5 V), 1.2 A per channel, no parallel mode, no adjustable OFF time.	Suitable only for low-voltage consumer robotics; lacks industrial-grade protections and thermal robustness.	Select when cost and simplicity outweigh 45 V operation, 3 Arms capability, and advanced current control.
DRV8876N	Single H-bridge (not dual), 3.6 A peak, integrated current sense amplifier, no parallel mode, 4.5–37 V supply.	Requires two ICs for dual-motor control; higher peak current but no shared control logic or fault coordination.	Prefer for applications needing higher per-channel current with analog current monitoring, not dual-coordinated motion.

Compared with TB6612FNG and DRV8876N, the STSPIN840 uniquely combines dual-channel integration, 45 V operation, parallel-mode scalability, and sub-45 µA standby-making it optimal for space-constrained, thermally demanding industrial motion systems requiring coordinated dual-axis control.

Availability

STSPIN840 is available at Aetrix Electronics and suitable for industrial automation, medical device actuation, and office equipment requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for STSPIN840 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, designing and manufacturing microcontrollers, power ICs, sensors, and analog devices for industrial, automotive, and consumer markets.

The STSPIN family targets high-efficiency, highly integrated motor control solutions for compact, thermally constrained applications-emphasizing protection robustness, current regulation precision, and minimal external component count.

FAQ

What is the maximum continuous output current per bridge?

The STSPIN840 delivers 1.5 Arms continuous output current per full-bridge channel under recommended operating conditions (T_j ≤ 125 °C, proper PCB thermal design). In parallel mode, the combined output reaches 3 Arms with reduced R_DS(on) (500 mΩ typ.), verified per datasheet Table 5 and Figure 5 application schematic.

How does the parallel mode affect pin functionality?

In parallel mode (PARALLEL pin = high), ENB\FAULTB is forced low and disabled; only ENA\FAULTA reports faults. PWMA and PHA control both bridges, while REFB, SNSB, SENSEB1/B2, and OUTB1/B2 remain electrically active but synchronized to Bridge A's control signals-verified in Section 5.2 and Figure 5 of the datasheet.

Can STSPIN840 drive stepper motors?

No. The STSPIN840 is specifically designed for brushed DC motors and lacks the phase sequencing logic, microstepping capability, or current chopping architecture required for stepper motor control. Its truth table and PWM current control architecture are optimized for bidirectional DC torque generation-not step/direction interface or coil commutation.

What is the role of the TOFF pin and how is it configured?

The TOFF pin sets PWM OFF time (10–150 µs) via an external resistor to ground. This resistor determines current decay rate during slow-decay periods, directly impacting average motor current and thermal behavior. Recommended ROFF range is 5 kΩ to 180 kΩ, with typical values selected from Figure 8 (OFF time vs. ROFF) in the datasheet.

STSPIN840 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: STSPIN8

Package/Case:: 24-TFQFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Motor Type - Stepper:: -

Motor Type - AC, DC:: Brushed DC

Function:: Driver - Fully Integrated, Control and Power Stage

Output Configuration:: Half Bridge (4)

Interface:: Logic

Technology:: Power MOSFET

Step Resolution:: -

Applications:: Industrial

Current - Output:: 1.5A

Voltage - Supply:: 7V ~ 45V

Voltage - Load:: 48V (Max)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 24-TQFPN (4x4)

STSPIN840 FAQ

1.How can I place an order for STSPIN840 through Aetrix?

Please submit a Request for Quotation (RFQ) for STSPIN840 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 STSPIN840 reliable?

The price and inventory of STSPIN840 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STSPIN840 is usually 5 days.

3.What payment methods are accepted for STSPIN840?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STSPIN840 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STSPIN840?

STSPIN840 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STSPIN840 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 STSPIN840?

For technical support, including STSPIN840 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STSPIN840 requirements.

6.How does Aetrix verify that STSPIN840 is sourced from the original manufacturer or authorized distributors?

All STSPIN840 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 STSPIN840 meets industry standards.

7.What is the process for return or replacement of STSPIN840?

All STSPIN840 units undergo pre-shipment inspection (PSI). If there is an issue with STSPIN840, 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 STSPIN840 part is unused and in its original packaging.

Return procedure for STSPIN840:

1.Submit a request within 90 days.

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

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