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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Full Half-Bridge (H Bridge) Drivers

STMicroelectronics L6207QTR

Name: L6207QTR
Brand: STMicroelectronics
SKU: L6207QTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: L6207QTR

Manufacturer:: STMicroelectronics

Category:: Full Half-Bridge (H Bridge) Drivers

Package:: 48-VFQFN Exposed Pad

Datasheet:: L6207QTR.pdf

Description:: IC HALF BRIDGE DRV 2.5A 48VFQFPN

Quantity:: RFQ Add To RFQ list

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Product details

Overview

L6207QTR 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, 5.6 A peak output current per bridge, 0.3 Ω typical high-side R_DS(on) at 25 °C, 100 kHz max switching frequency, and integrated non-dissipative overcurrent protection.

For engineers reviewing the L6207QTR datasheet, L6207QTR pinout, L6207QTR application, or L6207QTR equivalent, key selection considerations include constant t_OFF PWM current control per bridge, slow-decay synchronous rectification, cross-conduction protection, thermal shutdown, and bootstrap gate drive architecture for N-channel high-side MOSFETs.

Technical Context

The L6207QTR integrates two independent full-bridge power stages using BCDmultipower technology, each with matched high- and low-side DMOS transistors and intrinsic fast freewheeling diodes. It implements deadtime-controlled (1 µs typ.) complementary switching to prevent shoot-through.

Each bridge includes a dedicated constant t_OFF PWM current controller with external RC timing (RCA/RCB pins), reference voltage inputs (VREFA/VREFB), and sense-input comparators (SENSEA/SENSEB) that monitor current via external shunt resistors - enabling precise chopping regulation without dissipative sensing.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	8–52 V - supports wide industrial and automotive battery-fed motor systems without external regulation.
Peak Output Current	5.6 A per bridge - enables driving medium-torque stepper or brushed DC motors directly.
R_DS(on) (High-Side, 25 °C)	0.34 Ω typ. - minimizes conduction loss and thermal stress during sustained current delivery.
Max Switching Frequency	100 kHz - allows fine-grained current control and reduced audible noise in stepper microstepping.
t_OFF Timing Range	13–61 µs (with ROFF = 20–100 kΩ, COFF = 1 nF) - sets PWM recirculation time for stable current regulation across load conditions.
Thermal Shutdown Threshold	165 °C - protects against latch-up or silicon damage under overload or poor heatsinking.
Non-Dissipative OCD	Detects >5.6 A output current via internal high-side current mirror - eliminates need for power-shunt resistor and associated heat.

Pinout & Package

Package: VFQFPN48 (7 × 7 mm, 0.5 mm pitch), thermally enhanced with exposed EPAD connected to GND for PCB heat dissipation.

Pin/Terminal	Circuit Role	Design Meaning
IN1A / IN2A / IN1B / IN2B	Bridge logic inputs	TTL/CMOS-compatible control signals defining H-bridge state (forward/reverse/brake) per bridge.
ENA / ENB	Bridge enable inputs	Active-high enables; internally tied to OCD/thermal fault open-drain transistor - requires external REN/CEN for fault recovery timing.
SENSEA / SENSEB	Current sense inputs	Accept voltage drop across external shunt resistor (typically 0.1–0.5 Ω) to feed PWM comparator for current limiting.
RCA / RCB	RC timing inputs	Set constant t_OFF PWM period via external resistor-capacitor network - determines current decay interval.
VREFA / VREFB	PWM reference inputs	Analog voltage (0–1 V typical) setting target current threshold - defines peak current limit per bridge.
OUT1A/OUT2A/OUT1B/OUT2B	Power outputs	Four high-current terminals (2 per bridge) connecting directly to motor windings - rated for 5.6 A peak.
VSA / VSB	Bridge power supplies	Independent 8–52 V input pins per bridge - must be tied together externally for single-supply operation.
VBOOT	Bootstrap supply	Drives high-side gate via internal charge pump (VCP oscillator) - enables N-channel high-side MOSFETs without floating supply.

Key Features

Feature	Design Value
Dual independent PWM current controllers	Enables simultaneous, decoupled current regulation for two motors or one bipolar stepper with phase independence.
Slow-decay synchronous rectification	Reduces power loss during current recirculation by turning on upper MOSFET instead of relying on body diode conduction.
Non-dissipative overcurrent detection	Eliminates external current-sense resistor and its I²R heating - improves efficiency and simplifies PCB layout.
Cross-conduction protection	1 µs internal deadtime prevents shoot-through during bridge switching transitions - ensures safe commutation.
Integrated fast freewheeling diodes	Reduces external component count and improves reverse-recovery performance versus discrete diodes.

Applications

Bipolar Stepper Motor Control

Dual DC Motor Drive

Use Scenario: Driving NEMA 17–23 stepper motors in CNC positioning, 3D printer axes, or automated lab equipment requiring precise microstepping.

IC Role / Device Role / Timing Role: Dual full-bridge driver executing phase-commutated current control with constant t_OFF PWM and slow-decay recirculation.

Use Value: Enables smooth, low-noise motion with <1% current ripple at 100 kHz switching - critical for positional accuracy and vibration reduction.

Use Scenario: Independent bidirectional control of two DC motors in robotic arms, conveyor modules, or dual-axis solar trackers.

IC Role / Device Role / Timing Role: Two isolated H-bridge drivers with separate enable, direction, and current-limit inputs - no shared timing constraints.

Use Value: Eliminates need for two discrete half-bridge ICs and associated gate-drive components - reduces BOM cost by ~35% and board area by 40%.

Quad DC Motor Interface

Industrial Actuator Module

Use Scenario: Controlling four small DC motors (e.g., valve actuators, fan arrays) using two L6207QTRs in parallel configuration with shared supply rails.

IC Role / Device Role / Timing Role: Each L6207QTR drives two motors in H-bridge mode - coordinated via MCU GPIO with independent EN/IN logic.

Use Value: Supports up to 5.6 A per motor channel with thermal shutdown and overcurrent fault reporting - meets IEC 61800-5-1 functional safety requirements for Class 1 actuators.

Use Scenario: Compact motor driver module for HVAC damper control, medical infusion pumps, or factory automation end-effectors.

IC Role / Device Role / Timing Role: Primary power stage IC providing regulated current, fault signaling (via EN pin pull-down), and thermal monitoring in sealed enclosure.

Use Value: Integrated non-dissipative OCD and 165 °C thermal shutdown enable reliable operation in confined, unventilated enclosures without forced cooling.

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 4.5 A RMS rating but no integrated charge pump - requires external bootstrap circuitry; lacks non-dissipative OCD.	Targeted at lower-cost open-loop stepper systems where external sensing is acceptable.	Select when budget constraints outweigh need for integrated protection and simplified layout.
DRV8876PWPR	Single H-bridge (not dual); 6.5 A peak; integrated current regulation but no slow-decay mode - uses fast decay only.	Requires two devices for dual-motor use; better suited for high-speed DC motor control than stepper microstepping.	Select when space permits dual ICs and application demands higher peak current with fast transient response.

Compared with TB6600HG and DRV8876PWPR, the L6207QTR uniquely combines dual-bridge integration, non-dissipative current sensing, slow-decay recirculation, and bootstrap generation in one VFQFPN package - reducing system-level component count and improving thermal efficiency in compact motor-control designs.

Availability

L6207QTR is available at Aetrix Electronics and suitable for bipolar stepper motor control, dual DC motor drive, and industrial actuator modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for L6207QTR 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, delivering intelligent power, analog, MEMS, and microcontroller solutions for industrial, automotive, and consumer markets.

The L6207QTR belongs to ST's "Motor Control Drivers" product line, engineered specifically for high-efficiency, thermally robust, and layout-optimized motor interface in space-constrained embedded systems - emphasizing integrated protection, minimal external components, and industrial-grade reliability.

FAQ

What is the minimum recommended external RC network for t_OFF timing on RCA/RCB pins?

The minimum recommended RC network uses ROFF = 20 kΩ and COFF = 1 nF, yielding a t_OFF of 13 µs (typical). This value ensures stable PWM current regulation while maintaining sufficient margin against noise-induced false triggering. Lower COFF values increase susceptibility to EMI, so 1 nF is the practical lower bound for robust operation in industrial environments.

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

The L6207QTR embeds a precision current mirror in each high-side DMOS transistor that delivers a scaled replica (typically 1/2000) of the output current to the OCD comparator. This eliminates the need for a power-shunt resistor and its associated I²R losses, reducing thermal design complexity and improving overall system efficiency by up to 3% in continuous 3 A operation.

Can L6207QTR drive a unipolar stepper motor?

No - the L6207QTR is designed exclusively for dual full-bridge operation and requires four-terminal bipolar stepper windings. Unipolar steppers require center-tapped windings and five- or six-wire configurations incompatible with the device's OUT1A/OUT2A/OUT1B/OUT2B topology and current-sensing architecture.

What is the role of the VCP pin and how should it be used?

VCP is the internal charge pump oscillator output (600 kHz square wave, 10 V amplitude) used to generate the bootstrap voltage (VBOOT) for high-side gate drive. It must connect to an external CP capacitor (10 nF) and D1/D2 diodes per the Figure 5 schematic. Leaving VCP unconnected disables high-side drive, causing both bridges to operate in low-side-only mode with severely limited torque capability.

L6207QTR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 48-VFQFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Output Configuration:: Half Bridge (4)

Applications:: DC Motors, Stepper Motors, Voltage Regulators

Interface:: Logic

Load Type:: Inductive

Technology:: DMOS

Rds On (Typ):: 280mOhm LS, 340mOhm HS

Current - Output / Channel:: 2.5A

Current - Peak Output:: 5.6A

Voltage - Supply:: 8V ~ 52V

Voltage - Load:: 8V ~ 52V

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

Grade:: -

Qualification:: -

Features:: Bootstrap Circuit

Fault Protection:: Current Limiting, Over Temperature, UVLO

Mounting Type:: Surface Mount

Supplier Device Package:: 48-VFQFPN (7x7)

L6207QTR FAQ

1.How can I place an order for L6207QTR through Aetrix?

Please submit a Request for Quotation (RFQ) for L6207QTR 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 L6207QTR reliable?

The price and inventory of L6207QTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L6207QTR is usually 5 days.

3.What payment methods are accepted for L6207QTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L6207QTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for L6207QTR?

L6207QTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your L6207QTR 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 L6207QTR?

For technical support, including L6207QTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L6207QTR requirements.

6.How does Aetrix verify that L6207QTR is sourced from the original manufacturer or authorized distributors?

All L6207QTR 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 L6207QTR meets industry standards.

7.What is the process for return or replacement of L6207QTR?

All L6207QTR units undergo pre-shipment inspection (PSI). If there is an issue with L6207QTR, 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 L6207QTR part is unused and in its original packaging.

Return procedure for L6207QTR:

1.Submit a request within 90 days.

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

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