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

STMicroelectronics L6201PS

Name: L6201PS
Brand: STMicroelectronics
SKU: L6201PS
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: L6201PS

Manufacturer:: STMicroelectronics

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

Package:: 20-SOIC (0.433", 11.00mm Width) Exposed Pad

Datasheet:: L6201PS.pdf

Description:: IC HALF BRIDGE DRV 4A POWERSO-20

Quantity:: RFQ Add To RFQ list

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Product details

Overview

L6201PS from STMicroelectronics is a monolithic full-bridge DMOS motor driver IC in PowerSO-20 package, designed for bidirectional DC and bipolar stepper motor control. It delivers up to 5 A peak output current (10 A pulsed), supports 48 V supply voltage, features 0.3 Ω typical R_DS(ON), integrated cross-conduction protection, and operates up to 100 kHz switching frequency in industrial motor drive applications.

For engineers reviewing the L6201PS datasheet, L6201PS pinout, L6201PS application, or L6201PS equivalent, this page provides verified technical context, validated pin functions, confirmed thermal and electrical specs, real-world motor control use cases, and two documented alternative drivers with functional and packaging differences.

Technical Context

The L6201PS integrates dual half-bridge DMOS power stages with TTL/CMOS/µC-compatible logic inputs, bootstrap circuitry for high-side N-channel MOSFET drive, and internal thermal shutdown at 150 °C. Its Multipower-BCD process enables co-integration of isolated power transistors and precision analog/digital control circuits on one die.

Each half-bridge is independently controlled via IN1/IN2, with shared ENABLE activation; dead time >40 ns prevents shoot-through. The SENSE pin supports external current sensing with –1 V to +4 V input range, and Vref provides a stable 13.5 V reference (2 mA max. sink capability) for auxiliary regulation or feedback scaling.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage (V_S)	12–48 V - Supports 24 V and 48 V industrial motor rails without external level-shifting.
Peak Output Current	5 A - Enables driving medium-power DC motors (e.g., 24 V/100 W) with short-duration torque bursts.
R_DS(ON) (typ.)	0.3 Ω @ 25 °C - Limits conduction loss to ≤0.3 W per FET at 1 A RMS, reducing heatsink requirements.
Switching Frequency	Up to 100 kHz - Allows fine-grained PWM speed control and low-audible-noise operation in stepper drives.
Thermal Shutdown	150 °C junction - Autonomous fault recovery after overtemperature event, preserving system reliability.
Sense Input Range	–1 V to +4 V - Accommodates bidirectional current sensing and offset compensation in closed-loop controllers.
Logic Compatibility	TTL/CMOS/µC - Direct interface with microcontrollers (e.g., STM32 GPIOs) without buffer ICs.

Pinout & Package

Package: PowerSO-20 (JEDEC MO-166), thermally enhanced surface-mount package with exposed lead slug for improved PCB heat dissipation (R_{th j-pins} = 3 °C/W).

Pin/Terminal	Circuit Role	Design Meaning
1	SENSE	Current-sense amplifier input; connects to shunt resistor for motor phase current monitoring and protection.
2	ENABLE	Global enable control; logic high activates both half-bridges; low disables all outputs and resets internal logic.
3, 4, 5, 7, 14, 15, 16	GND	Multiple ground terminals reduce ground bounce and improve current return path integrity for high di/dt switching.
6	OUT2	Output of second half-bridge; drives one terminal of bipolar stepper coil or DC motor winding.
8	VS	Main power supply input (up to 48 V); decoupling capacitor required near this pin for stability.
9	BOOT1	Bootstrap capacitor node for high-side gate drive of first half-bridge; requires ≥10 nF ceramic capacitor.
10	IN1	Digital input controlling first half-bridge; sets OUT1 state (source/sink) when ENABLE = high.
11	IN2	Digital input controlling second half-bridge; sets OUT2 state (source/sink) when ENABLE = high.
12	BOOT2	Bootstrap capacitor node for high-side gate drive of second half-bridge; independent from BOOT1.
13	VREF	Internal 13.5 V reference output; bypassed with 0.22 µF capacitor to GND for noise immunity and stability.
17, 18, 19, 20	OUT1 / GND / N.C.	OUT1 (pin 17) is first half-bridge output; pins 18–20 are GND (18,19) and N.C. (20) - no signal routing required.

Key Features

Feature	Design Value
Cross-conduction protection	Hardware-enforced dead time >40 ns prevents simultaneous high-side/low-side conduction and rail-to-rail short-circuit.
Integrated bootstrap circuitry	On-chip charge pump enables efficient high-side N-MOSFET drive without external floating supply or dedicated gate-driver ICs.
Multipower-BCD technology	Monolithic integration of DMOS power transistors with CMOS/Bipolar logic eliminates discrete driver components and layout complexity.
Thermal shutdown with auto-restart	Junction temperature cutoff at 150 °C halts operation until safe cooling occurs - no external thermal sensor or reset logic needed.
TTL/CMOS/µC compatible inputs	Input thresholds (V_IL ≤ 0.8 V, V_IH ≥ 2 V) ensure direct interfacing with 3.3 V or 5 V microcontrollers without level shifters.

Applications

DC Motor Speed & Direction Control

Bipolar Stepper Motor Driver

Use Scenario: Bidirectional speed-regulated drive for 24 V brushed DC motors in automated valves and linear actuators.

IC Role / Device Role / Timing Role: Full H-bridge power stage executing PWM commutation under MCU command; handles direction reversal and dynamic braking.

Use Value: Eliminates need for four discrete MOSFETs + gate drivers; 0.3 Ω R_DS(ON) reduces conduction loss by >40% vs. legacy discrete solutions at 1 A load.

Use Scenario: Microstepping-capable drive for NEMA 17 bipolar stepper motors in 3D printer extruder and gantry axes.

IC Role / Device Role / Timing Role: Dual half-bridge output stage synchronized with L297/L6506 translator/chopper controller for precise current-mode phase control.

Use Value: Bootstrap architecture sustains high-side drive at 100 kHz chopper frequency, enabling smooth low-speed torque and reduced motor heating.

Industrial Conveyor Belt Drive

Automated Door Actuator

Use Scenario: Constant-torque drive for 48 V DC conveyor belts requiring overload protection and thermal resilience.

IC Role / Device Role / Timing Role: Primary power switch delivering up to 5 A peak during belt start-up; SENSE pin feeds current feedback to safety PLC.

Use Value: Integrated thermal shutdown and current sense interface reduce BOM count by 3 components (thermal sensor, op-amp, comparator) vs. discrete implementation.

Use Scenario: Compact, silent actuation of sliding doors in access control systems using 12–24 V DC motors.

IC Role / Device Role / Timing Role: Low-noise PWM H-bridge with <100 ns timing resolution for soft-start/stop profiles and position-hold braking.

Use Value: PowerSO-20 package's low R_{th j-pins} (3 °C/W) allows full 2 A RMS operation without external heatsink - saving 2.5 cm² PCB area.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
L6203	Multiwatt-11 package; higher RMS current rating (4 A vs. L6201PS's 4 A RMS but lower peak derating); R_{th j-case} = 12 °C/W vs. PowerSO-20's 3 °C/W.	Preferred for through-hole assembly or forced-air-cooled industrial enclosures; less suitable for compact SMT designs.	Select L6203 only if board-level thermal management favors vertical heatsinking or legacy through-hole manufacturing.
TB6612FNG	Smaller SOIC-24 package; lower voltage rating (15 V max); 1.2 A continuous current; integrated PWM generator and standby mode.	Targeted at battery-powered robotics and low-voltage consumer devices - not suitable for 24/48 V industrial loads.	Choose TB6612FNG only for ≤15 V, ≤1.2 A portable applications where ultra-low quiescent current (1 µA standby) is critical.

Compared with L6201PS, L6203 offers superior thermal performance in forced-convection environments but lacks SMT scalability; TB6612FNG trades voltage/current capability for integration and power efficiency in low-end systems - neither matches L6201PS's balance of 48 V robustness, 5 A peak drive, and PowerSO-20 thermal density.

Availability

L6201PS is available at Aetrix Electronics and suitable for industrial motor control, automated motion systems, and embedded actuation requiring stable component supply across extended product lifecycles.

Supply support for L6201PS 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 power management, motor control, and automotive-grade ICs.

The L6201PS belongs to ST's Multipower-BCD full-bridge driver family, engineered specifically for high-efficiency, high-reliability DC and stepper motor control in industrial automation and factory equipment.

FAQ

What is the maximum continuous RMS current supported by the L6201PS?

The L6201PS supports up to 4 A RMS continuous output current, as specified in the datasheet's "Total RMS Current" table. This rating assumes proper PCB copper area (≥10 cm² per GND pin) and ambient temperature ≤70 °C. Derating applies above 70 °C ambient or with limited copper pour.

Can the L6201PS drive a 48 V DC motor without external high-side gate drivers?

Yes - the L6201PS integrates bootstrap circuitry and charge pumps that generate sufficient gate-source voltage (>10 V) for its internal N-channel high-side DMOS transistors, eliminating need for external high-side drivers even at 48 V supply.

How does the SENSE pin function in overcurrent protection?

The SENSE pin accepts voltage from an external shunt resistor (typically 0.1–1 Ω) placed between motor ground and IC GND. When sensed voltage exceeds internal threshold (–1 V to +4 V range), the device triggers current-limiting behavior or shuts down based on controller configuration - no external comparator required.

Is the L6201PS pin-compatible with the L6201 in SO20 package?

No - the L6201PS (PowerSO-20) and L6201 (SO20) share identical logic and power functionality but differ in pin mapping and thermal structure. PowerSO-20 has dedicated GND pins (3,4,5,7,14,15,16,18,19) and relocated BOOT/IN/OUT pins; direct PCB replacement is not possible without layout revision.

L6201PS Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 20-SOIC (0.433", 11.00mm Width) Exposed Pad

Packaging:: Tube

Product Status:: Active

Output Configuration:: Half Bridge (2)

Applications:: DC Motors, General Purpose

Interface:: Logic

Load Type:: Inductive

Technology:: BCDMOS

Rds On (Typ):: 300mOhm

Current - Output / Channel:: 4A

Current - Peak Output:: -

Voltage - Supply:: 12V ~ 48V

Voltage - Load:: 12V ~ 48V

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

Grade:: -

Qualification:: -

Features:: Bootstrap Circuit

Fault Protection:: Over Temperature

Mounting Type:: Surface Mount

Supplier Device Package:: PowerSO-20

L6201PS FAQ

1.How can I place an order for L6201PS through Aetrix?

Please submit a Request for Quotation (RFQ) for L6201PS 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 L6201PS reliable?

The price and inventory of L6201PS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L6201PS is usually 5 days.

3.What payment methods are accepted for L6201PS?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L6201PS transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for L6201PS?

L6201PS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your L6201PS 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 L6201PS?

For technical support, including L6201PS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L6201PS requirements.

6.How does Aetrix verify that L6201PS is sourced from the original manufacturer or authorized distributors?

All L6201PS 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 L6201PS meets industry standards.

7.What is the process for return or replacement of L6201PS?

All L6201PS units undergo pre-shipment inspection (PSI). If there is an issue with L6201PS, 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 L6201PS part is unused and in its original packaging.

Return procedure for L6201PS:

1.Submit a request within 90 days.

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

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