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

Infineon Technologies TLE8444SLXUMA1

Name: TLE8444SLXUMA1
Brand: Infineon Technologies
SKU: TLE8444SLXUMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLE8444SLXUMA1

Manufacturer:: Infineon Technologies

Category:: Motor Drivers, Controllers

Package:: 24-SSOP (0.154", 3.90mm Width)

Datasheet:: TLE8444SLXUMA1.pdf

Description:: IC MOTOR DRIVER BIPOLAR 24SSOP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

TLE8444SLXUMA1 from Infineon Technologies is a quad half-bridge driver IC for automotive motion control, integrating four independently controlled DMOS power stages with 1.3 Ω max R_DS(ON) at T_j = 150 °C, ±1 A output current capability, and built-in open-load/short-circuit/overtemperature diagnostics. It supports unipolar/bipolar stepper and brushed DC motor control in forward, reverse, brake, and high-impedance modes via parallel TTL/CMOS-compatible inputs (3.3 V/5 V), and operates down to 5 µA sleep current.

For engineers reviewing the TLE8444SLXUMA1 datasheet, TLE8444SLXUMA1 pinout, TLE8444SLXUMA1 application, or TLE8444SLXUMA1 equivalent, key selection criteria include diagnostic flag behavior (open-drain EF1/EF2), VS-supply voltage range (–0.3 V to 40 V), INH-controlled sleep mode entry, and PG-SSOP-24 thermal performance under AEC-Q100 Grade 0 conditions.

Technical Context

The TLE8444SLXUMA1 implements two independent function logic blocks (OUT1+2 and OUT3+4), each driving two half-bridges with charge-pump-based high-side gate control and integrated freewheeling diodes. Its protection architecture includes overvoltage/undervoltage lockout (UVLO/OVLO), hysteresis-based thermal shutdown, and short-circuit detection with automatic current limiting.

Input configuration supports mixed polarity: IN1/IN3 are non-inverting with internal pull-down; IN2/IN4 are inverting with internal pull-up - reducing MCU GPIO count. Diagnostics report faults via dual open-drain error flags (EF1/EF2), each aggregating status across two outputs, enabling scalable system-level fault isolation without additional logic.

Key Specifications

Parameter	Value and Actual Design Meaning
R_DS(ON) max	1.3 Ω @ T_j = 150 °C - ensures low conduction loss and thermal margin in 12 V automotive loads up to 1 A per channel
Output current	±1 A continuous - supports direct drive of small stepper coils or DC motors without external boost stages
Sleep current	5 µA max - enables always-on vehicle modules (e.g., idle speed actuators) to meet ISO 16750 quiescent power budgets
Supply voltage range	–0.3 V to 40 V - accommodates load-dump transients and reverse-battery conditions when used with external protection diode
Logic input compatibility	3.3 V / 5 V with hysteresis - eliminates need for level-shifting in mixed-voltage MCU systems and improves noise immunity
Diagnostic coverage	Open-load (ON-state), short-to-VS/ground, overtemperature, UVLO/OVLO - provides comprehensive fault visibility for ASIL-B–aligned designs

Pinout & Package

Package: PG-SSOP-24 (Plastic Small Outline Package, shrink, 24-pin), thermally enhanced with fused leads for improved PCB heat dissipation and AEC-Q100 compliance.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 11, 12, 20	GND	Signal ground reference; all five pins must be externally tied to common PCB ground plane for stable logic and power return paths
3	OUT1	Half-bridge 1 output; DMOS high-/low-side switch node with integrated freewheeling diode and short-circuit protection
4, 9, 15, 22	VS	Battery supply input; all four pins connect to 12 V rail with external reverse-polarity diode and bulk capacitance per application diagram
5	EF1	Error flag 1 (open-drain); low-active indication of fault on OUT1 or OUT2 - requires external pull-up to VS or logic rail
6	IN1	Non-inverting input for OUT1; internal pull-down ensures safe default OFF state during MCU reset or initialization
7	IN2	Inverting input for OUT2; internal pull-up ensures complementary logic behavior to minimize MCU pin usage in H-bridge sequencing
8	EF2	Error flag 2 (open-drain); low-active indication of fault on OUT3 or OUT4 - enables dual-zone fault reporting
10	OUT2	Half-bridge 2 output; electrically identical to OUT1 with independent protection and diagnostics
14	OUT4	Half-bridge 4 output; shares same R_DS(ON), current rating, and protection features as OUT1–OUT3
17	INH	Inhibit control; logic-low forces device into ultra-low-power sleep mode (≤5 µA), disabling all outputs and diagnostics
18	IN4	Inverting input for OUT4; paired with IN3 to support differential stepping patterns without external inverters
19	IN3	Non-inverting input for OUT3; complements IN4 to implement full-step or wave-drive sequences for bipolar steppers
23	OUT3	Half-bridge 3 output; supports independent control of third motor winding or auxiliary actuator channel

Key Features

Feature	Design Value
Thermally enhanced PG-SSOP-24 package	Fused leadframe design reduces thermal resistance to PCB, enabling sustained 1 A operation at T_amb ≤ 85 °C without heatsink
Dual open-drain error flags (EF1/EF2)	Each flag aggregates faults across two outputs, simplifying MCU interrupt handling and reducing required GPIO count by 50%
Mixed-polarity parallel interface	Combination of non-inverting (IN1/IN3) and inverting (IN2/IN4) inputs allows full H-bridge control using only four MCU pins plus INH
Integrated freewheeling diodes	Eliminates need for four external Schottky diodes per half-bridge, reducing BOM cost and PCB area in space-constrained automotive modules
AEC-Q100 Grade 0 qualification	Validated for operation from –40 °C to +150 °C junction temperature - suitable for under-hood applications including engine control and HVAC actuators

Applications

Idle Speed Control Actuator

Bipolar Stepper Motor Driver

Use Scenario: Regulating engine air bypass valve position during cold start and idle stabilization in gasoline engines.

IC Role / Device Role / Timing Role: Quad half-bridge driver executing microstepped current profiles to position rotary solenoid with closed-loop feedback.

Use Value: Enables precise 0.5° step resolution and <10 ms response time using internal diagnostics to detect coil open-circuit before misfire events occur.

Use Scenario: Driving 2-phase bipolar stepper in automotive instrument cluster pointer movement (fuel gauge, tachometer).

IC Role / Device Role / Timing Role: Direct phase-current control via parallel INx signals; EF1/EF2 monitor coil integrity during pointer sweep sequences.

Use Value: Eliminates external current-sense resistors and discrete MOSFETs, reducing total solution size by 35% versus discrete half-bridge implementation.

DC Brush Motor Brake Control

Valve Positioner Module

Use Scenario: Rapid deceleration and holding torque for HVAC blend door actuators using dynamic braking and coast-to-stop modes.

IC Role / Device Role / Timing Role: Configures OUT1–OUT4 as two independent H-bridges to apply reverse polarity or short-circuit braking across motor terminals.

Use Value: Achieves <50 ms brake engagement with integrated overtemperature shutdown preventing thermal runaway during stall conditions.

Use Scenario: Controlling proportional solenoid valves in diesel common-rail fuel systems requiring precise duty-cycle modulation.

IC Role / Device Role / Timing Role: Uses PWM-capable half-bridges (OUT1–OUT4) to deliver 10–90% duty cycle to solenoid windings with real-time open-load detection.

Use Value: Detects partial coil degradation (e.g., inter-turn short) via R_DS(ON) drift monitoring, enabling predictive maintenance alerts before leakage failure.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad half-bridge driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
VNQ5E04TR-E	Single-channel high-side driver (4× independent); no half-bridge topology, no integrated low-side switches or freewheeling diodes	Requires external low-side FETs and flyback diodes for full H-bridge operation; lacks EF-flag aggregation	Select when only high-side switching is needed and board space permits discrete low-side implementation
BD1690GUL-E2	Quad low-side driver only; no high-side capability, no integrated diagnostics beyond overcurrent flag	Cannot drive bipolar loads directly; needs external high-side supply or bootstrap circuitry for bidirectional control	Select for cost-sensitive 12 V relay or solenoid arrays where direction reversal is unnecessary

Compared with VNQ5E04TR-E and BD1690GUL-E2, the TLE8444SLXUMA1 delivers true integrated half-bridge functionality with embedded diagnostics and thermal robustness - eliminating six external components per channel and reducing system-level validation effort for ASIL-B motion control subsystems.

Availability

TLE8444SLXUMA1 is available at Aetrix Electronics and suitable for automotive idle speed control, HVAC actuator modules, instrument cluster stepper drives, and diesel fuel valve positioners requiring stable component supply across extended product lifecycles.

Supply support for TLE8444SLXUMA1 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

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs, with core expertise in silicon-based smart power technologies.

The TLE8444SLXUMA1 belongs to Infineon's TLE automotive power driver family, engineered specifically for robust, diagnostic-rich motor control in harsh environments - targeting ASIL-B functional safety compliance without external monitoring ICs.

FAQ

What is the maximum allowable junction temperature for continuous operation?

The TLE8444SLXUMA1 is rated for continuous operation up to 150 °C junction temperature, validated per AEC-Q100 Grade 0 requirements. Thermal derating begins above 125 °C ambient when operating at full 1 A load; PCB copper area and airflow must be designed to maintain T_j ≤ 150 °C under worst-case load-dump conditions.

How does the open-load diagnosis work during active drive?

Open-load detection operates exclusively in ON-state: when an output is commanded high or low, the IC measures current flow through the channel. If current remains below 0.9 A threshold (minimum overcurrent shutdown level), it triggers EF1 or EF2 after 200 µs delay. This confirms open windings or broken traces while excluding startup inrush or transient dropout.

Can INH be used for PWM dimming or current regulation?

No - INH is a digital inhibit signal only; asserting low disables all outputs, diagnostics, and internal regulators, placing the IC in deep sleep (≤5 µA). For current control, PWM must be applied directly to the INx inputs at frequencies ≤ 20 kHz, respecting minimum pulse width (1 µs) and rise/fall time (50 ns) specifications in the datasheet.

Are the VS pins internally connected within the package?

No - the four VS pins (4, 9, 15, 22) are electrically separate bond wires routed to the same internal supply rail. They must be externally shorted on the PCB with low-inductance traces and decoupled near each pin using ≥10 µF ceramic + ≥100 µF electrolytic capacitors to suppress EMC and sustain load-dump energy absorption per Figure 18 in the datasheet.

TLE8444SLXUMA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 24-SSOP (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Motor Type - Stepper:: Bipolar, Unipolar

Motor Type - AC, DC:: Brushed DC

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

Output Configuration:: Half Bridge (4)

Interface:: Parallel

Technology:: BiCDMOS

Step Resolution:: -

Applications:: -

Current - Output:: 1A

Voltage - Supply:: 8V ~ 18V

Voltage - Load:: 8V ~ 18V

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

Grade:: Automotive

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-SSOP-24-7

TLE8444SLXUMA1 FAQ

1.How can I place an order for TLE8444SLXUMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for TLE8444SLXUMA1 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 TLE8444SLXUMA1 reliable?

The price and inventory of TLE8444SLXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE8444SLXUMA1 is usually 5 days.

3.What payment methods are accepted for TLE8444SLXUMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE8444SLXUMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLE8444SLXUMA1?

TLE8444SLXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLE8444SLXUMA1 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 TLE8444SLXUMA1?

For technical support, including TLE8444SLXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE8444SLXUMA1 requirements.

6.How does Aetrix verify that TLE8444SLXUMA1 is sourced from the original manufacturer or authorized distributors?

All TLE8444SLXUMA1 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 TLE8444SLXUMA1 meets industry standards.

7.What is the process for return or replacement of TLE8444SLXUMA1?

All TLE8444SLXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE8444SLXUMA1, 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 TLE8444SLXUMA1 part is unused and in its original packaging.

Return procedure for TLE8444SLXUMA1:

1.Submit a request within 90 days.

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

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