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

STMicroelectronics L2293QTR

Name: L2293QTR
Brand: STMicroelectronics
SKU: L2293QTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: L2293QTR

Manufacturer:: STMicroelectronics

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

Package:: 32-VFQFN Exposed Pad

Datasheet:: L2293QTR.pdf

Description:: IC HALF BRIDG DRV 600MA 32VFQFPN

Quantity:: RFQ Add To RFQ list

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Inventory:8,723

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Product details

Overview

L2293QTR from STMicroelectronics is a monolithic quad-channel push-pull driver IC designed for high-current inductive load control. It delivers 600 mA continuous output per channel, supports 1.2 A non-repetitive peak current, integrates internal clamp diodes, features dual enable inputs (EN1/EN2), and operates with separate logic (VSS) and power (VS) supplies up to 36 V. It is used in DC motor H-bridge control, relay driving, and stepper motor phase switching.

For engineers reviewing the L2293QTR datasheet, L2293QTR pinout, L2293QTR application, or L2293QTR equivalent, key selection criteria include per-channel saturation voltage (V_CE(sat) ≤ 1.8 V), input noise immunity (V_IL up to 1.5 V), thermal resistance (R_th(JA) = 42 °C/W), switching speed (t_on ≤ 750 ns), and VFQFPN-32L 5×5 mm exposed-pad package compatibility.

Technical Context

The L2293QTR implements four independent bipolar push-pull output stages, each with integrated flyback diodes for inductive load protection. Each pair of channels (OUT1/OUT2 and OUT3/OUT4) shares a dedicated enable input (EN1/EN2), enabling two independent half-bridge configurations.

It uses separate VS (power stage supply, up to 36 V) and VSS (logic supply, 2.8–36 V) rails, allowing TTL/DTL-level compatibility and flexible system-level voltage partitioning. Logic inputs tolerate up to 1.5 V low-state voltage for robust noise immunity in electrically noisy environments.

Key Specifications

Parameter	Value and Actual Design Meaning
Output current (continuous)	600 mA per channel - sufficient to drive small DC motors, relays, and solenoids without external buffering
Peak output current	1.2 A (100 µs, non-repetitive) - handles short-term inrush or stall currents in motor startup
V_CE(sat) (source/sink)	1.4–1.8 V at ±600 mA - limits conduction loss and junction heating under full load
Input low voltage (V_IL)	Up to 1.5 V - ensures reliable logic '0' recognition in noisy industrial environments
Switching frequency limit	50 kHz maximum - supports PWM-based speed control of brushed DC and unipolar stepper motors
R_th(JA)	42 °C/W (on specified PCB) - defines thermal derating curve when mounted on double-layer FR4 with 0.5 cm² top copper + 6 cm² ground plane
Supply voltage range (VS/VSS)	2.8–36 V (VSS), 0–36 V (VS) - enables operation across wide industrial input rails including 5 V, 12 V, 24 V systems

Pinout & Package

The L2293QTR is housed in a VFQFPN-32L 5 mm × 5 mm thermally enhanced package with an exposed pad (connected to GND) for improved heat dissipation. The package complies with ECOPACK® environmental standards and uses 0.5 mm pitch leads.

Pin/Terminal	Circuit Role	Design Meaning
10, 16, 25, 31	Output (OUT2, OUT3, OUT4, OUT1)	Push-pull outputs capable of sourcing/sinking 600 mA; internally clamped to VS/GND
11, 15, 26, 30	Input (IN2, IN3, IN4, IN1)	TTL/DTL-compatible digital inputs; V_IL ≤ 1.5 V ensures noise margin in industrial settings
14, 29	Enable (EN2, EN1)	Active-high enables; LOW disables respective channel pair (OUT1/OUT2 or OUT3/OUT4)
12, 13	Power supply (VS)	Main power rail for output stages; requires 100 nF decoupling to GND
27	Logic supply (VSS)	Separate rail for logic circuitry; allows lower-voltage control interface (e.g., 3.3 V MCU)
8, 9, 17, 24, 28, 32	GND	Ground reference for both logic and power sections; tied to exposed pad for thermal path
1, 18–23	NC	No-connect pins; internally tied to exposed pad - must be connected to GND on PCB
2–7	NC (exposed pad)	Direct connection points to thermal pad; require GND routing for heatsinking

Key Features

Feature	Design Value
Dual independent enable inputs	EN1 controls OUT1/OUT2; EN2 controls OUT3/OUT4 - enables two isolated half-bridge functions in one IC
Integrated clamp diodes	Internal flyback diodes per output - eliminates need for external snubbers when driving relays or solenoids
Separate logic and power supplies	VSS (2.8–36 V) and VS (0–36 V) rails - permits mixed-voltage system integration (e.g., 3.3 V MCU + 24 V load)
Overtemperature protection	Thermal shutdown activates at T_J = 150 °C - prevents latch-up or permanent damage during overload or poor heatsinking
High-noise-immunity inputs	V_IL up to 1.5 V - rejects common-mode transients typical in motor-drive and factory automation environments

Applications

DC Motor H-Bridge Control

Relay/Solenoid Driver

Use Scenario: Bidirectional speed and direction control of 12–24 V brushed DC motors in industrial actuators and automated valves.

IC Role / Device Role / Timing Role: Quad-channel push-pull driver configured as two half-bridges; each pair (OUT1/OUT2, OUT3/OUT4) forms one leg of an H-bridge.

Use Value: Eliminates discrete transistor/diode count by integrating four matched drivers with shared enable logic and thermal monitoring.

Use Scenario: Driving 24 V DC relays and 12 V solenoids in PLC I/O modules and HVAC control panels.

IC Role / Device Role / Timing Role: High-current sink/source switch with built-in flyback protection - replaces discrete MOSFET+diode combinations.

Use Value: Reduces BOM count and PCB area while ensuring reliable turn-off transient suppression without external components.

Unipolar Stepper Motor Driver

Industrial Power Transistor Interface

Use Scenario: Phase excitation for 4-wire unipolar stepper motors in CNC positioning stages and printer mechanisms.

IC Role / Device Role / Timing Role: Four independent low-side switches (or configured as two full-step drivers) with synchronized enable control.

Use Value: Enables microstepping-capable drive via PWM on inputs, with V_CE(sat) stability ensuring consistent torque across phases.

Use Scenario: Gate/base drive interface between microcontrollers and external NPN/PNP power transistors in high-power switching supplies.

IC Role / Device Role / Timing Role: Level-shifting, current-boosting buffer with fast rise/fall times (≤250 ns) and precise timing control.

Use Value: Ensures clean, jitter-free switching of external power devices at up to 50 kHz, minimizing switching losses.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad-channel push-pull driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
L293D	16-pin DIP package; 600 mA per channel; no exposed thermal pad; higher R_th(JA) (~70 °C/W)	Suitable for prototyping and low-power breadboard use; lacks thermal performance for sustained 24 V/600 mA loads	Select when board space and thermal management are not constrained, and through-hole assembly is preferred.
TB6612FNG	Smaller 24-pin SSOP; 1.2 A continuous per channel; built-in PWM input logic; lower V_CE(sat) (0.4 V typ)	Better suited for battery-powered robotics and compact motor drivers requiring higher efficiency and integrated PWM decoding	Choose for space-constrained designs needing higher current headroom and native PWM support.

Compared with L2293QTR, L293D offers simpler packaging but inferior thermal handling, while TB6612FNG provides higher current capability and tighter saturation voltage at the cost of more complex control logic and smaller footprint - making L2293QTR optimal for industrial 24 V relay/motor control where thermal reliability and dual-enable flexibility are critical.

Availability

L2293QTR is available at Aetrix Electronics and suitable for industrial motor control, programmable logic controller (PLC) I/O modules, and automated valve actuation requiring stable component supply and long-term lifecycle support.

Supply support for L2293QTR 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, specializing in automotive, industrial, and power management solutions with broad IP and manufacturing scale.

The L2293QTR belongs to ST's legacy power driver IC family, engineered specifically for robust, high-current interfacing between logic controllers and electromechanical loads in harsh industrial environments.

FAQ

What is the maximum operating junction temperature for the L2293QTR?

The absolute maximum junction temperature is 150 °C, with overtemperature protection activating automatically above this threshold to prevent device damage. Operation should be limited to ≤125 °C under recommended conditions, and thermal design must ensure R_th(JA) ≤ 42 °C/W using the specified PCB layout with exposed pad grounded.

Can the L2293QTR drive inductive loads without external diodes?

Yes - the L2293QTR integrates internal clamp diodes across each output stage, enabling safe commutation of relays, solenoids, and DC motors without external flyback components. These diodes conduct energy stored in inductive loads back to VS or GND during turn-off, preventing voltage spikes exceeding absolute maximum ratings.

How does the dual-enable architecture improve system design?

The separate EN1 and EN2 inputs allow independent control of two channel pairs (OUT1/OUT2 and OUT3/OUT4), enabling two isolated half-bridge functions. This simplifies H-bridge motor control, reduces external logic gates, and supports fault-isolation strategies - for example, disabling one motor leg during overcurrent while keeping the other active.

Is the exposed thermal pad required to be connected to ground?

Yes - pins 1, 18–23 and 2–7 are NC but internally connected to the exposed pad, which must be soldered to a GND plane on the PCB. This connection establishes the primary thermal path and electrical reference; omitting it degrades R_th(JA) significantly and risks thermal runaway under sustained load.

L2293QTR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 32-VFQFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Output Configuration:: Half Bridge (4)

Applications:: DC Motors, Relays, Solenoids, Stepper Motors

Interface:: Logic

Load Type:: Inductive

Technology:: -

Rds On (Typ):: -

Current - Output / Channel:: 600mA

Current - Peak Output:: 1.2A

Voltage - Supply:: 2.8V ~ 36V

Voltage - Load:: 2.8V ~ 36V

Operating Temperature:: -20°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Features:: -

Fault Protection:: Over Temperature

Mounting Type:: Surface Mount

Supplier Device Package:: 32-VFQFPN (5x5)

L2293QTR FAQ

1.How can I place an order for L2293QTR through Aetrix?

Please submit a Request for Quotation (RFQ) for L2293QTR 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 L2293QTR reliable?

The price and inventory of L2293QTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L2293QTR is usually 5 days.

3.What payment methods are accepted for L2293QTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L2293QTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for L2293QTR?

L2293QTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your L2293QTR 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 L2293QTR?

For technical support, including L2293QTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L2293QTR requirements.

6.How does Aetrix verify that L2293QTR is sourced from the original manufacturer or authorized distributors?

All L2293QTR 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 L2293QTR meets industry standards.

7.What is the process for return or replacement of L2293QTR?

All L2293QTR units undergo pre-shipment inspection (PSI). If there is an issue with L2293QTR, 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 L2293QTR part is unused and in its original packaging.

Return procedure for L2293QTR:

1.Submit a request within 90 days.

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

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