Overview
The L9857-TR-LF from STMicroelectronics is a high-side gate driver IC designed for automotive and industrial applications. It serves as a versatile interface between microcontrollers and various automotive sensors and actuators, facilitating high-speed communication and control within vehicle systems.
This IC is particularly useful in Electronic Control Units (ECUs) for functions such as engine management, transmission control, and body electronics. Its robust design and integrated protection features make it an ideal choice for demanding motor control applications.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer Part # | L9857-TR-LF |
| Package/Case | SOIC-8 |
| 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) |
| Supplier Device Package | 8-SOIC |
| Base Product Number | L9857 |
Key Features
- High-speed CAN transceiver designed for automotive applications
- Data rates up to 1 Mbps
- Integrated protection against bus-line faults, overvoltage, and electrostatic discharge
- Operates over a wide temperature range
- Suitable for space-constrained designs
Applications
The L9857-TR-LF is widely used in various automotive and industrial applications, including:
- Electronic Control Units (ECUs) for engine management, transmission control, and body electronics
- Engine management systems
- Transmission control systems
- Body electronics
- General motor control applications such as conveyor belts and actuator control in manufacturing, medical devices, and industrial automation
Q & A
- What is the primary function of the L9857-TR-LF?
The L9857-TR-LF is a high-side gate driver IC designed to control high-speed communication and data transmission in automotive and industrial applications.
- What are the key protection features of the L9857-TR-LF?
The IC features integrated protection against bus-line faults, overvoltage, and electrostatic discharge.
- What is the maximum data rate supported by the L9857-TR-LF?
The L9857-TR-LF supports data rates up to 1 Mbps.
- What is the operating temperature range of the L9857-TR-LF?
The operating temperature range is -55°C to 150°C (TJ).
- In what type of package is the L9857-TR-LF available?
The L9857-TR-LF is housed in an 8-SOIC package.
- What are some common applications of the L9857-TR-LF in the automotive sector?
Common applications include Electronic Control Units (ECUs), engine management systems, transmission control systems, and body electronics.
- Does the L9857-TR-LF support high-side voltage?
- What is the peak output current of the L9857-TR-LF?
The peak output current is 500mA for both source and sink.
- Is the L9857-TR-LF suitable for space-constrained designs?
- What type of input does the L9857-TR-LF use?
The L9857-TR-LF uses a non-inverting input type.
