L9904-TR - Motor Bridge Controller for Automotive | STMicroelectronics
MPN: L9904-TR β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.32 | $4.32 |
| 10 | $3.89 | $38.90 |
| 100 | $3.46 | $346.00 |
| 500 | $3.11 | $1,555.00 |
| 1,000 | $2.77 | $2,770.00 |
Drop-in alternatives for L9904-TR β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
L9904
β Drop-Inβ 99,999 In Stock
$5.44 / Unit
View Datasheet βL9333MD
β‘ Same Packageπ Reference alternative (not in catalog)
L9904-TR Maximum Ratings & Electrical Characteristics
| Function | Motor Bridge Controller |
| Technology | Power MOSFET |
| Supply Voltage Range | 8 V to 28 V |
| Overvoltage Tolerance | 40 V (max) |
| Low Voltage Operation | 6 V (with step-up converter) |
| Quiescent Current (Standby) | < 50 Β΅A |
| PWM Frequency | Up to 30 kHz |
| Cross-Conduction Protection | Programmable time |
| Diagnostic Interface | ISO 9141 |
| Charge Pump | Yes (for high-side drive) |
| Operating Temperature Range | -40Β°C to +150Β°C |
| Package | SO-20 |
| Mounting Style | SMD/SMT |
| Packaging | Tape & Reel (TR) |
| RoHS Status | Compliant |
L9904-TR Pin Configuration
| Pin 1 | CP1 β Charge pump flying capacitor connection |
| Pin 2 | CP2 β Charge pump flying capacitor connection |
| Pin 3 | VCC β Supply voltage |
| Pin 4 | GND β Ground |
| Pin 5 | IN1 β Logic input for H-bridge control |
| Pin 6 | IN2 β Logic input for H-bridge control |
| Pin 7 | IN3 β Logic input for H-bridge control |
| Pin 8 | IN4 β Logic input for H-bridge control |
| Pin 9 | ISO β ISO 9141 bus interface |
| Pin 10 | DIAG β Diagnostic output |
| Pin 11 | GND β Ground |
| Pin 12 | GND β Ground |
| Pin 13 | GH1 β High-side gate drive output 1 |
| Pin 14 | SH1 β High-side source sense 1 |
| Pin 15 | GL1 β Low-side gate drive output 1 |
| Pin 16 | GH2 β High-side gate drive output 2 |
| Pin 17 | SH2 β High-side source sense 2 |
| Pin 18 | GL2 β Low-side gate drive output 2 |
| Pin 19 | VCP β Charge pump output |
| Pin 20 | VCC β Supply voltage |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
L9904-TR is suitable for 6 applications: Automotive Window Lift, Sunroof Control, Seat Adjuster, Cooling Fan, Industrial Brushed DC Motor Control, Automotive Actuator.
Automotive Window Lift
The L9904-TR drives the H-bridge for DC window lift motors, providing precise speed and direction control. Its wide supply voltage range (8V-28V) handles load dump transients, while the ISO 9141 diagnostics report faults to the body control module. The charge pump enables efficient high-side N-MOSFET drive, and the low standby current (<50 Β΅A) minimizes battery drain when the window is idle. PWM up to 30 kHz allows smooth, quiet operation. The -40Β°C to +150Β°C temperature range ensures reliable operation in extreme climates.
Recommended
Sunroof Control
The L9904-TR provides robust motor control for sunroof systems, handling the high inrush currents of DC motors. The programmable cross-conduction protection prevents shoot-through, enhancing reliability. The ISO 9141 interface allows the sunroof ECU to monitor motor health and detect obstructions. The step-up converter ensures operation even when the battery voltage drops to 6V during cranking. The SO-20 package fits compact sunroof control modules, and the automotive temperature rating supports under-roof thermal stress.
Recommended
Seat Adjuster
The L9904-TR controls the multiple DC motors in power seat adjusters, enabling precise positioning. Its real-time diagnostics detect stall conditions and prevent motor damage. The wide supply voltage range accommodates voltage fluctuations during simultaneous motor operation. The charge pump simplifies the high-side drive, reducing external components. The low quiescent current is ideal for always-on seat modules. The device's robust protection features ensure long-term reliability in daily use.
Recommended
Cooling Fan
The L9904-TR drives the engine cooling fan motor, providing variable speed control via PWM up to 30 kHz. The high PWM frequency reduces acoustic noise and improves efficiency. The ISO 9141 diagnostics allow the engine control unit to monitor fan operation and detect faults. The wide supply voltage range handles load dump and cold-crank conditions. The device's thermal performance is suitable for under-hood environments, and the charge pump ensures reliable high-side drive.
Recommended
Industrial Brushed DC Motor Control
The L9904-TR can be used in industrial brushed DC motor control applications such as conveyor belts, pumps, and actuators. Its wide supply voltage range (8V-28V) supports various industrial power rails. The programmable cross-conduction protection and real-time diagnostics enhance system reliability. The ISO 9141 interface can be adapted for industrial communication. The device's robust design and wide temperature range make it suitable for factory automation environments.
Recommended
Automotive Actuator
The L9904-TR controls various automotive actuators such as throttle valves, wastegates, and HVAC flaps. Its precise PWM control and diagnostic feedback enable accurate positioning. The low standby current is critical for battery preservation. The step-up converter ensures operation during low battery conditions. The device's small SO-20 package fits space-constrained actuator modules, and the automotive temperature rating ensures reliability in engine bay environments.
Recommended
Recommended Products Summary
Engineering reference data for L9904-TR β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | L9904 | L9333MD |
|---|---|---|---|
| Package | SO-20 | SO-20 | SO-20 |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Supply Voltage Range | 8V to 28V | 8V to 28V | [DATA_NEEDED] |
| Overvoltage Tolerance | 40V | 40V | [DATA_NEEDED] |
| Quiescent Current (Standby) | < 50 Β΅A | < 50 Β΅A | [DATA_NEEDED] |
| PWM Frequency | Up to 30 kHz | Up to 30 kHz | [DATA_NEEDED] |
| Diagnostic Interface | ISO 9141 | ISO 9141 | [DATA_NEEDED] |
| Operating Temperature Range | -40Β°C to +150Β°C | -40Β°C to +150Β°C | [DATA_NEEDED] |
Key Differentiators
- ISO 9141 diagnostic interface (vs L9333MD)
- Wide supply voltage range with step-up converter (vs L9333MD)
- Low standby quiescent current (vs L9333MD)
Design Notes
Place the charge pump flying capacitor (between CP1 and CP2) as close to the L9904-TR pins as possible, using a low-ESR ceramic capacitor (e.g., 10nF). Keep the high-side gate drive traces (GH1, GH2) short and wide to minimize parasitic inductance. Ensure a solid ground plane under the SO-20 package for thermal and electrical performance.
The L9904-TR's power dissipation depends on the gate charge of the external MOSFETs and the switching frequency. For high-frequency PWM (up to 30 kHz) with large MOSFETs, ensure adequate copper area on the PCB to dissipate heat. The SO-20 package has limited thermal capability; consider adding thermal vias under the package if the device is expected to dissipate more than 1W.
Do not exceed the absolute maximum supply voltage of 40V. Use a TVS diode or load-dump protection on the VCC pin for automotive applications. Ensure the ISO 9141 bus line is properly terminated and protected against ESD. The charge pump output (VCP) must not be loaded with more than the specified current; verify the flying capacitor value against the datasheet.
Compliance Information
RoHS compliance is indicated by STMicroelectronics product pages. AEC-Q100 qualification is not explicitly stated in the provided data; the device is designed for automotive applications but may not be formally AEC-Q100 qualified.
