L9380 - Triple High-Side MOSFET Driver | STMicroelectronics | Automotive
料号： L9380 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 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 |
L9380 概述
A high-side MOSFET driver is a type of gate driver IC that controls the gate voltage of N-channel MOSFETs connected between the positive supply rail and the load. It is a critical component in power management systems, enabling efficient switching of high-current loads while providing protection against overcurrent, overvoltage, and reverse battery conditions. In the hierarchy of power management, a high-side driver falls under gate drivers, which are part of the broader category of power management ICs, ultimately contributing to the overall semiconductor ecosystem.
Key features of the L9380 include its ability to drive three external N-channel MOSFETs, an overvoltage charge pump shut-off that protects the circuit when the supply voltage exceeds 25V, and reverse battery protection that prevents damage when the battery is connected with reversed polarity. The device also offers programmable overload protection for channels 1 and 2, allowing designers to set current limits according to their application requirements. Additionally, the open ground protection function ensures safe operation even when the ground connection is lost, which is crucial for automotive reliability.
From a technical perspective, the L9380 integrates a charge pump to generate the necessary gate drive voltage for high-side N-channel MOSFETs, which typically require a gate voltage higher than the supply rail. The device is designed to operate with a supply voltage range that accommodates automotive battery voltages, including cranking and load-dump conditions. The SO-20 package provides a compact footprint while allowing adequate thermal dissipation for the driver's power dissipation. The driver's output stages are capable of sourcing and sinking sufficient current to switch the MOSFETs quickly, minimizing switching losses.
Typical applications for the L9380 include automotive body control modules, lighting control, motor control, and other high-current loads that traditionally used electromechanical relays. By replacing relays with MOSFETs and the L9380 driver, designers can achieve faster switching, longer lifespan, and reduced electromagnetic interference (EMI). The device is also suitable for industrial applications where high-side switching with protection is required.
When designing with the L9380, it is essential to ensure proper PCB layout to minimize parasitic inductance and provide adequate thermal management for the external MOSFETs. The charge pump requires external capacitors for proper operation, and the overload protection programming resistors must be selected carefully to match the desired current thresholds. Additionally, the reverse battery protection feature relies on the application circuit, so the external components must be chosen to ensure this protection is effective.
直接替换替代料： L9380 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： L9380 （相同外形与封装尺寸） ——差异在于 Package.
快速对比工具——选择替代料号进行并排对比：
L9380-LF
✅ 直接替换📋 参考替代料（不在目录中）
L9380-TR-LF
✅ 直接替换📋 参考替代料（不在目录中）
L99H02QFTR
⚡ 相同封装 ⚠️ 规格未核验📋 参考替代料（不在目录中）
L9380 最大额定值与电气特性
| Number of Channels | 3 |
| 输出类型 | High-Side |
| Input Type | Non-Inverting |
| 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) |
| 封装 | 20-SO (SO-20) |
| 安装类型 | Surface Mount |
| Charge Pump | Yes |
L9380 引脚配置
| 引脚 1 | OUT1 — Output for channel 1, connected to the gate of external MOSFET |
| 引脚 2 | OUT2 — Output for channel 2, connected to the gate of external MOSFET |
| 引脚 3 | OUT3 — Output for channel 3, connected to the gate of external MOSFET |
| 引脚 4 | GND — Ground connection |
| 引脚 5 | VS — Supply voltage input |
| 引脚 6 | IN1 — Input control for channel 1 |
| 引脚 7 | IN2 — Input control for channel 2 |
| 引脚 8 | IN3 — Input control for channel 3 |
| 引脚 9 | PROG1 — Programming pin for overload protection on channel 1 |
| 引脚 10 | PROG2 — Programming pin for overload protection on channel 2 |
| 引脚 11 | CP — Charge pump capacitor connection |
| 引脚 12 | NC — No connection |
典型应用
L9380 适用于 6 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： L9380 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | L9380-LF | L9380-TR-LF | L99H02QFTR |
|---|---|---|---|---|
| Package | 20-SO | 20-SO | 20-SO | 20-SO |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Output Type | High-Side | High-Side | High-Side | High-Side |
关键差异点
- Triple high-side driver in a single package （对比 L99H02QFTR)
- Overvoltage charge pump shut-off at VS > 25V （对比 L99H02QFTR)
- Programmable overload protection on channels 1 and 2 （对比 L99H02QFTR)
设计说明
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.
合规信息
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.
