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

STMicroelectronics L9639PD013TR

Name: L9639PD013TR
Brand: STMicroelectronics
SKU: L9639PD013TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: L9639PD013TR

Manufacturer:: STMicroelectronics

Category:: Motor Drivers, Controllers

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

Datasheet:: L9639PD013TR.pdf

Description:: IC MOTOR DRIVER 8V-17V 20POWERSO

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Product details

Overview

L9639PD013TR from STMicroelectronics is a bidirectional motor stop control IC with programmable current thresholds and delay timing, designed for DC motor servomechanisms requiring precise end-position detection without mechanical switches. It integrates dual DMOS power switches, active bridge topology, thermal protection, short-circuit detection (>8 A), and internal charge pump for gate drive. Used in automotive seat/mirror actuators and industrial linear positioners.

For engineers reviewing the L9639PD013TR datasheet, L9639PD013TR pinout, L9639PD013TR application, or L9639PD013TR equivalent, key selection criteria include its 50 V max supply, ITH/I_THCC programmability via R_SHUNT, TD delay tuning with R_CEX/C_EX, open-load detection, and PowerSO-20 package thermal resistance of 4 °C/W.

Technical Context

The L9639PD013TR implements a current-sensing motor stop controller using two external thresholds: I_TH (70–135 µA reference) for start/end position detection and I_THCC (240–690 µA, supply-dependent) for short-circuit shutdown. Its active diode bridge enables bidirectional motor control with polarity reversal between COMMON and LIVE pins.

Timing delay T_D is set by external R_CEX and C_EX (T_D = R_CEX·C_EX·K_TD, K_TD ≈ 1), while internal charge pump ensures full enhancement of series-connected DMOS output stage (R_ON = 0.6–1 Ω). Quiescent current in standby is 100–200 µA.

Key Specifications

Parameter	Value and Actual Design Meaning
Max Supply Voltage	50 V - supports 12/24 V automotive systems with headroom for load dump transients
Output Current Limit	>8 A - sustains stall currents during end-of-travel detection without latch-off
R_ON (DMOS)	0.6–1 Ω - determines conduction loss and thermal rise at rated load
I_TH Reference Range	70–135 µA - sets motor running current threshold via external shunt resistor
I_THCC Reference Range	240–690 µA - scales with V_BAT to match voltage-dependent stall current
T_D Delay Constant K_TD	≈1 - enables direct RC-based timing design without calibration
R_{th j-case}	4 °C/W - defines junction-to-case thermal path for heatsink sizing in PowerSO-20

Pinout & Package

Package: PowerSO-20 (JEDEC MO-166), thermally enhanced exposed slug, R_{th j-case} = 4 °C/W, suitable for high-current motor drive in constrained space.

Pin/Terminal	Circuit Role	Design Meaning
COMMON (1,10,11,20)	Motor return path / Bridge common node	Shared low-side connection for bidirectional motor current flow; tied to GND internally via multiple pins for current sharing
LIVE (2)	Motor polarity input	Inverts motor direction when swapped with COMMON; powers internal logic via active bridge
V+ (14)	Internal supply rail	Filtered output of internal charge pump; requires 100 nF decoupling to GND
OUT (3,4)	High-side DMOS drain outputs	Series-connected power switches driving motor terminals; share current path to minimize R_ON
SHUNT (5,6,17,16)	Current sense input	Four parallel pins for low-impedance connection to external R_SHUNT; reduces trace resistance impact on threshold accuracy
RCEX (8)	Delay timing resistor	Sets T_D together with C_EX; connects to internal comparator reference node
VREF (19)	Reference voltage output	Provides stable bias for external R_REF to generate V_TH; not user-adjustable

Key Features

Feature	Design Value
Bidirectional motor control	Eliminates need for H-bridge driver ICs or discrete MOSFETs by integrating active bridge with polarity-reversal logic
Programmable start/end current thresholds	I_TH set via R_SHUNT enables consistent end-stop detection across motor variants and aging
Supply-voltage-compensated short-circuit detection	I_THCC scaling with V_BAT prevents false trips during cold cranking or battery sag
Adjustable stop delay (T_D)	RC-tuned delay allows motor to overcome friction or minor obstructions before halting
Integrated open-load detection	Identifies disconnected motor windings up to 200 Ω series resistance, preventing uncontrolled startup

Applications

Automotive Seat Positioning

Industrial Linear Actuators

Use Scenario: Precise adjustment of driver/passenger seat fore-aft and recline positions using DC motors with mechanical end stops.

IC Role / Device Role / Timing Role: Bidirectional motor controller detecting stall current at travel limits and halting motor after programmable T_D delay.

Use Value: Replaces mechanical limit switches, reducing assembly cost and improving long-term reliability against contact wear.

Use Scenario: Controlled extension/retraction of valve stems or damper linkages in HVAC or process control systems.

IC Role / Device Role / Timing Role: End-of-travel detector using I_TH threshold and T_D delay to distinguish normal friction stall from binding faults.

Use Value: Enables torque-based positioning without position sensors, lowering BOM count and calibration complexity.

Power Mirror Adjustment

Office Equipment Paper Feeders

Use Scenario: Motorized folding/unfolding and tilt adjustment of side-view mirrors in vehicles.

IC Role / Device Role / Timing Role: Polarity-reversal controlled bidirectional switch with short-circuit protection and thermal shutdown.

Use Value: Withstands reverse-battery conditions and load dumps up to 50 V, meeting automotive robustness requirements.

Use Scenario: Bidirectional paper transport in multifunction printers, where jam detection relies on motor current anomalies.

IC Role / Device Role / Timing Role: Real-time current monitoring with dual thresholds (I_TH for end-of-feed, I_THCC for paper jam overload).

Use Value: Differentiates between normal high-torque feed events and destructive jams, enabling graceful recovery instead of forced shutdown.

Equivalent & Alternatives

The following parts are listed as comparable options for similar bidirectional motor stop control applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
L9637D013TR	Lower max supply (40 V), no VREF pin, fixed I_THCC scaling factor	Lacks programmable VREF output; less flexible for precision current threshold tuning	Select when system V_BAT stays ≤40 V and open-load detection is not required
VNQ5E04TR-E	Single-channel high-side driver, no current threshold programming or T_D delay logic	Requires external microcontroller for position logic and timing; no integrated stall detection	Select when full MCU-based control is preferred and board space allows added components

Compared with L9639PD013TR, L9637D013TR trades voltage headroom and reference flexibility for cost reduction, while VNQ5E04TR-E shifts timing and detection intelligence to firmware-increasing software overhead but offering greater algorithmic adaptability.

Availability

L9639PD013TR is available at Aetrix Electronics and suitable for automotive seat controls, industrial linear actuators, power mirror systems, and office equipment requiring stable component supply and long-lifecycle support.

Supply support for L9639PD013TR 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 analog, mixed-signal, power, and microcontroller solutions for automotive, industrial, and consumer markets.

The L9639 belongs to ST's "Actuator Driver" product line, engineered specifically for electromechanical position control in safety-critical and high-reliability motion systems without position sensors.

FAQ

What is the function of the VREF pin on L9639PD013TR?

VREF (pin 19) provides a stable internal reference voltage used to bias the external R_REF resistor that sets the threshold voltage V_TH for current detection. It is not adjustable by the user and ensures consistent I_TH calculation (I_TH = V_TH/R_SHUNT) across temperature and supply variations.

How does the L9639PD013TR handle reverse-polarity connection?

The device uses an active diode bridge architecture that allows correct operation when LIVE and COMMON pins are swapped. Internal circuitry derives power from either polarity, enabling bidirectional motor control and protecting downstream logic without external polarity protection diodes.

Can the short-circuit detection threshold be adjusted independently of the run current threshold?

Yes. I_THCC is derived from a separate internal reference (I_REFCC) scaled with supply voltage, while I_TH uses I_REF. Both share the same R_SHUNT, but their distinct reference currents allow independent tuning of stall detection versus fault shutdown behavior.

Is the PowerSO-20 package lead-free and RoHS-compliant?

Yes. The L9639PD013TR PowerSO-20 package is manufactured per RoHS Directive 2011/65/EU and uses lead-free terminations. The exposed slug is solderable and compatible with standard reflow profiles for Pb-free assembly.

L9639PD013TR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Motor Type - Stepper:: -

Motor Type - AC, DC:: Brushed DC

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

Output Configuration:: Half Bridge (2)

Interface:: On/Off

Technology:: DMOS

Step Resolution:: -

Applications:: General Purpose

Current - Output:: 5A

Voltage - Supply:: 8V ~ 17V

Voltage - Load:: 8V ~ 17V

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PowerSO-20

L9639PD013TR FAQ

1.How can I place an order for L9639PD013TR through Aetrix?

Please submit a Request for Quotation (RFQ) for L9639PD013TR 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 L9639PD013TR reliable?

The price and inventory of L9639PD013TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L9639PD013TR is usually 5 days.

3.What payment methods are accepted for L9639PD013TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L9639PD013TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for L9639PD013TR?

L9639PD013TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your L9639PD013TR 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 L9639PD013TR?

For technical support, including L9639PD013TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L9639PD013TR requirements.

6.How does Aetrix verify that L9639PD013TR is sourced from the original manufacturer or authorized distributors?

All L9639PD013TR 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 L9639PD013TR meets industry standards.

7.What is the process for return or replacement of L9639PD013TR?

All L9639PD013TR units undergo pre-shipment inspection (PSI). If there is an issue with L9639PD013TR, 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 L9639PD013TR part is unused and in its original packaging.

Return procedure for L9639PD013TR:

1.Submit a request within 90 days.

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

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