Overview
The L9857-TR-LF is a high-voltage high-side gate driver IC manufactured by STMicroelectronics. This component is designed to drive N-channel MOSFETs in high-side configurations, making it suitable for various power management and motor control applications. The L9857-TR-LF is known for its robust performance, high reliability, and compatibility with a wide range of operating conditions.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 8-SOIC (0.154", 3.90mm Width) |
| Driven Configuration | High-Side |
| Channel Type | Single |
| Number of Drivers | 1 |
| Gate Type | N-Channel MOSFET |
| Voltage - Supply | 10 V ~ 18 V |
| Current - Peak Output (Source, Sink) | 500mA, 500mA |
| Input Type | Non-Inverting |
| High Side Voltage - Max (Bootstrap) | 300V |
| Rise / Fall Time (Typ) | 100ns, 100ns |
| Operating Temperature | -55°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount |
Key Features
- High voltage rail up to 450 V
- dV/dt immunity ±50 V/nsec in full temperature range
- Driver current capability: 500mA source and sink
- Fast switching times: 100 ns rise/fall with 2.5 nF load
- Non-inverting input
- High-side voltage up to 300V (bootstrap)
- Operating temperature range: -55°C to 150°C (TJ)
Applications
The L9857-TR-LF is widely used in various applications requiring high-side gate driving, such as:
- Power management systems
- Motor control and drive systems
- Industrial automation
- Automotive systems
- High-voltage power supplies
Q & A
- What is the maximum high-side voltage of the L9857-TR-LF?
The maximum high-side voltage is 300V (bootstrap). - What is the typical rise and fall time of the L9857-TR-LF?
The typical rise and fall time is 100ns with a 2.5 nF load. - What is the operating temperature range of the L9857-TR-LF?
The operating temperature range is -55°C to 150°C (TJ). - What type of MOSFET does the L9857-TR-LF drive?
The L9857-TR-LF drives N-channel MOSFETs. - What is the package type of the L9857-TR-LF?
The package type is 8-SOIC (0.154", 3.90mm Width). - What is the peak output current of the L9857-TR-LF?
The peak output current is 500mA for both source and sink. - Is the input of the L9857-TR-LF inverting or non-inverting?
The input is non-inverting. - What is the dV/dt immunity of the L9857-TR-LF?
The dV/dt immunity is ±50 V/nsec in full temperature range. - What are some common applications of the L9857-TR-LF?
Common applications include power management systems, motor control and drive systems, industrial automation, automotive systems, and high-voltage power supplies. - What is the supply voltage range for the L9857-TR-LF?
The supply voltage range is 10 V to 18 V).
