Overview
The L9857-TR-LF from STMicroelectronics is a high-performance high-side gate driver IC designed specifically for automotive and industrial applications. This device serves as a versatile interface between microcontrollers and various automotive sensors and actuators, facilitating efficient communication and control within the vehicle's systems. It is particularly suited for Electronic Control Units (ECUs) in functions such as engine management, transmission control, and body electronics.
Key Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Manufacturer | STMicroelectronics | Part Status | Active |
| Driven Configuration | High-Side | Channel Type | Single |
| Number of Drivers | 1 | Gate Type | N-Channel MOSFET |
| Voltage - Supply | 10V ~ 18V | Current - Peak Output (Source, Sink) | 500mA, 500mA |
| Input Type | Non-Inverting | High Side Voltage - Max (Bootstrap) | 300 V |
| Rise / Fall Time (Typ) | 100ns, 100ns | Operating Temperature | -55°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount | Package / Case | 8-SOIC (0.154", 3.90mm Width) |
Key Features
- High-Speed Data Transmission: Supports data rates up to 1 Mbps, facilitating rapid communication between vehicle systems.
- Integrated Protection: Protects against bus-line faults, overvoltage, and electrostatic discharge, ensuring reliability in harsh environments.
- Wide Temperature Range: Operates effectively across a broad temperature spectrum, suitable for automotive conditions.
- Compact Package: SO-8 package reduces board space requirements, making it ideal for space-constrained designs.
Applications
The L9857-TR-LF is primarily used in automotive applications, specifically for Electronic Control Units (ECUs) in functions such as engine management, transmission control, and body electronics. It also finds use in general motor control applications, including:
- Engine management systems
- Transmission control systems
- Body electronics
- Conveyor belts: Controlling the speed and direction of conveyor belt motors used in manufacturing and packaging.
- Actuator control: For actuators in various applications requiring precise motor control, including medical devices and industrial automation.
Q & A
- What is the primary application of the L9857-TR-LF?
The L9857-TR-LF is primarily used in automotive applications, particularly in Electronic Control Units (ECUs) for engine management, transmission control, and body electronics.
- What is the maximum data rate supported by the L9857-TR-LF?
The L9857-TR-LF supports data rates up to 1 Mbps.
- What kind of protection does the L9857-TR-LF offer?
The L9857-TR-LF provides integrated protection against bus-line faults, overvoltage, and electrostatic discharge.
- What is the operating temperature range of the L9857-TR-LF?
The operating temperature range of the L9857-TR-LF is -55°C to 150°C (TJ).
- What is the package type of the L9857-TR-LF?
The L9857-TR-LF is housed in an 8-SOIC package.
- What is the peak output current of the L9857-TR-LF?
The peak output current of the L9857-TR-LF is 500mA for both source and sink.
- Is the L9857-TR-LF suitable for space-constrained designs?
Yes, the L9857-TR-LF is suitable for space-constrained designs due to its compact SO-8 package.
- What is the high side voltage maximum (bootstrap) for the L9857-TR-LF?
The high side voltage maximum (bootstrap) for the L9857-TR-LF is 300 V.
- What are the typical rise and fall times of the L9857-TR-LF?
The typical rise and fall times of the L9857-TR-LF are 100ns each.
- Who is the manufacturer of the L9857-TR-LF?
The manufacturer of the L9857-TR-LF is STMicroelectronics.
