L9380 - Triple High-Side MOSFET Driver | STMicroelectronics | Automotive
MPN: L9380 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.56 | $25.60 |
| 100 | $2.28 | $228.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.85 | $1,850.00 |
Drop-in alternatives for L9380 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:
L9380-LF
β Drop-Inπ Reference alternative (not in catalog)
L9380-TR-LF
β Drop-Inπ Reference alternative (not in catalog)
L99H02QFTR
β‘ Same Packageπ Reference alternative (not in catalog)
L9380 Maximum Ratings & Electrical Characteristics
| Number of Channels | 3 |
| Output Type | High-Side |
| Input Type | Non-Inverting |
| Supply Voltage (VS) | [DATA_NEEDED: Supply voltage range] |
| Overvoltage Shut-Off Threshold | 25 V |
| Reverse Battery Protection | Yes (referring to application circuit) |
| Programmable Overload Protection | Yes (channels 1 and 2) |
| Open Ground Protection | Yes (channels 1 and 2) |
| Package | 20-SO (SO-20) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | [DATA_NEEDED: Operating temperature range] |
| Output Current | [DATA_NEEDED: Output current per channel] |
| Charge Pump | Yes |
| RoHS Status | [DATA_NEEDED: RoHS status] |
| MSL Level | [DATA_NEEDED: MSL level] |
L9380 Pin Configuration
| Pin 1 | OUT1 β Output for channel 1, connected to the gate of external MOSFET |
| Pin 2 | OUT2 β Output for channel 2, connected to the gate of external MOSFET |
| Pin 3 | OUT3 β Output for channel 3, connected to the gate of external MOSFET |
| Pin 4 | GND β Ground connection |
| Pin 5 | VS β Supply voltage input |
| Pin 6 | IN1 β Input control for channel 1 |
| Pin 7 | IN2 β Input control for channel 2 |
| Pin 8 | IN3 β Input control for channel 3 |
| Pin 9 | PROG1 β Programming pin for overload protection on channel 1 |
| Pin 10 | PROG2 β Programming pin for overload protection on channel 2 |
| Pin 11 | CP β Charge pump capacitor connection |
| Pin 12 | NC β No connection |
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
L9380 is suitable for 6 applications: Automotive Body Control Module, Automotive Lighting Control, Industrial High-Side Switching, Motor Control, Relay Replacement in ECUs, Power Distribution.
Automotive Body Control Module
The L9380 is ideal for automotive body control modules (BCMs) where it replaces electromechanical relays for controlling lights, wipers, and other high-current loads. Its triple high-side driver configuration allows driving three independent loads, while the overvoltage protection (VS > 25V) and reverse battery protection ensure reliable operation in harsh automotive environments. The programmable overload protection on channels 1 and 2 enables precise current limiting, preventing damage to wiring and loads. The open ground protection ensures safe operation even if the ground connection is lost, which is critical for automotive safety. By using the L9380, designers can achieve faster switching speeds, longer lifespan, and reduced EMI compared to relays, while simplifying the BOM and reducing assembly costs.
Recommended
Automotive Lighting Control
The L9380 is well-suited for automotive lighting control, including headlights, daytime running lights, and interior lighting. It drives external N-channel MOSFETs to switch high-current lamps, providing fast and efficient switching. The overvoltage shut-off at VS > 25V protects the circuit during load dump transients, while the programmable overload protection allows setting current limits to prevent lamp burnout. The open ground protection ensures that the lighting system remains safe even if the ground connection fails. Compared to relays, the L9380 offers longer lifespan, lower power dissipation, and reduced electromagnetic interference, making it a preferred choice for modern automotive lighting systems.
Recommended
Industrial High-Side Switching
In industrial applications, the L9380 can be used for high-side switching of loads such as solenoids, valves, and motors. Its triple-channel configuration allows controlling multiple loads with a single IC, reducing component count and board space. The programmable overload protection enables setting current thresholds to protect against short circuits and overcurrent conditions. The wide operating temperature range and robust protection features make it suitable for industrial environments. The charge pump ensures sufficient gate drive voltage for N-channel MOSFETs, even when the supply voltage is low. This makes the L9380 a versatile solution for industrial control systems.
Recommended
Motor Control
The L9380 can be used in motor control applications, particularly for brushed DC motors in automotive and industrial settings. It drives high-side MOSFETs to control the motor's power supply, enabling PWM-based speed control. The fast switching capability of the MOSFETs, combined with the L9380's gate driver, minimizes switching losses and improves efficiency. The overvoltage protection prevents damage during regenerative braking or load dump. The programmable overload protection allows setting current limits to protect the motor and driver. The open ground protection ensures safe operation in case of ground faults. This makes the L9380 a reliable choice for motor control in various applications.
Recommended
Relay Replacement in ECUs
The L9380 is specifically designed for relay replacement in automotive electric control units (ECUs). By replacing electromechanical relays with MOSFETs and the L9380 driver, designers can achieve faster switching, longer lifespan, and reduced EMI. The device's triple high-side driver configuration allows controlling multiple loads, such as fuel pumps, cooling fans, and heaters. The protection features, including overvoltage shut-off (VS > 25V), reverse battery protection, and open ground protection, ensure reliable operation in the harsh automotive environment. The programmable overload protection on channels 1 and 2 provides flexibility in setting current limits. This makes the L9380 an ideal solution for modern ECUs.
Recommended
Power Distribution
The L9380 can be used in power distribution systems to switch high-current loads in a controlled manner. Its triple high-side driver configuration allows distributing power to multiple loads from a single supply. The overvoltage protection ensures that the system can withstand voltage spikes, while the programmable overload protection prevents overcurrent damage. The open ground protection adds an extra layer of safety. The device's ability to drive external N-channel MOSFETs makes it scalable for various current ratings. This makes the L9380 suitable for applications such as smart power distribution in vehicles and industrial equipment.
Recommended
Recommended Products Summary
Engineering reference data for L9380 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | L9380-LF | L9380-TR-LF | L99H02QFTR |
|---|---|---|---|---|
| Package | 20-SO | 20-SO | 20-SO | 20-SO |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Number of Channels | 3 | 3 | 3 | [DATA_NEEDED] |
| Output Type | High-Side | High-Side | High-Side | High-Side |
| Overvoltage Shut-Off | Yes (VS > 25V) | Yes (VS > 25V) | Yes (VS > 25V) | [DATA_NEEDED] |
| Reverse Battery Protection | Yes (application dependent) | Yes (application dependent) | Yes (application dependent) | [DATA_NEEDED] |
| Programmable Overload Protection | Yes (channels 1 and 2) | Yes (channels 1 and 2) | Yes (channels 1 and 2) | [DATA_NEEDED] |
| Open Ground Protection | Yes (channels 1 and 2) | Yes (channels 1 and 2) | Yes (channels 1 and 2) | [DATA_NEEDED] |
Key Differentiators
- Triple high-side driver in a single package (vs L99H02QFTR)
- Overvoltage charge pump shut-off at VS > 25V (vs L99H02QFTR)
- Programmable overload protection on channels 1 and 2 (vs L99H02QFTR)
Design Notes
Ensure proper PCB layout for the L9380 to minimize parasitic inductance and ensure stable operation. Place the charge pump capacitor (CP) close to the CP pin and VS pin. Use a solid ground plane and adequate copper pour for thermal management. Keep the gate drive traces short and wide to reduce inductance and improve switching performance.
The L9380 itself dissipates minimal power, but the external MOSFETs may generate significant heat. Ensure adequate heatsinking for the MOSFETs, especially in high-current applications. The SO-20 package has a thermal resistance that should be considered; refer to the datasheet for thermal data. Use thermal vias and copper pours to enhance heat dissipation.
Do not exceed the supply voltage rating of the L9380. The overvoltage shut-off is set at VS > 25V, but the absolute maximum rating may be higher; verify in the datasheet. Ensure the reverse battery protection is implemented correctly in the application circuit, as it relies on external components. Program the overload protection resistors accurately to avoid false triggering or insufficient protection.
Compliance Information
Compliance information not explicitly provided in the verified data. The L9380-LF variant is likely lead-free, but this is not confirmed. Check the datasheet or manufacturer for RoHS and REACH status.
