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L9857-TR-LF
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Product Detailed Parameters
- Description：IC GATE DRVR HIGH-SIDE 8SO
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR)
- Driven Configuration：High-Side
- Channel Type：Single
- Number of Drivers：1
- Gate Type：MOSFET (N-Channel)
- Voltage - Supply：10V ~ 18V
- Logic Voltage - VIL, VIH：-
- Current - Peak Output (Source, Sink)：500mA, 500mA
- Input Type：Non-Inverting
- 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
- Grade：-
- Qualification：-
- High Side Voltage - Max (Bootstrap)：300 V
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Overview
The L9857-TR-LF is a high-voltage high-side driver manufactured by STMicroelectronics. It features a single channel designed to drive N-channel MOSFETs. The device operates with a supply voltage range of 10 V to 18 V and delivers a peak output current of 500 mA for both source and sink operations. It is classified as a gate driver IC and is moisture sensitive.
Feature Summary
- High voltage high-side driver configuration
- Capable of driving N-channel MOSFET loads
- Single channel design
Applications
- Automotive lighting systems
- Motor control applications
- Industrial load switching
Procurement Notes
Verify the specific suffix (LF) indicates lead-free compliance if required by your assembly process. Confirm the package type matches your PCB footprint requirements, typically SOP. Ensure ESD handling procedures are followed due to moisture sensitivity classification. Cross-reference the exact part number with official STMicroelectronics documentation to confirm pinout and electrical characteristics before finalizing procurement.
Selection Notes
Select this component when a single high-side switch is needed for N-channel MOSFETs in automotive or industrial environments. Consider the 500 mA peak current capability for load requirements. Verify that the 10 V to 18 V supply voltage range aligns with your system's power architecture. Evaluate thermal performance based on the expected continuous load current and ambient conditions.
Part Context
This part belongs to STMicroelectronics' portfolio of high-voltage drivers. It is distinct from low-side drivers and multi-channel variants. The L9857 series is engineered for robust operation in electrically noisy environments typical of automotive and industrial machinery. It serves as a interface between low-voltage logic controllers and high-power external switches.
Replacement Considerations
Check for direct substitutes such as the L9857-TR variant, noting that the LF suffix denotes lead-free packaging. Verify functional compatibility regarding voltage ratings and current capabilities. Consult official replacement guides from STMicroelectronics for qualified alternative components within the same product family.
