LF2181NTR

$2.61

Description：IC GATE DRVR HALF-BRIDGE 8SOIC
Series：-
Mfr：Littelfuse Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:4b2efc6bc4e0 Category: Gate Drivers Brand: Littelfuse Inc.

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Product introduction

Product Detailed Parameters

Description：IC GATE DRVR HALF-BRIDGE 8SOIC
Series：-
Mfr：Littelfuse Inc.
Package：Tape & Reel (TR),Cut Tape (CT)
Driven Configuration：Half-Bridge
Channel Type：Independent
Number of Drivers：2
Gate Type：IGBT, MOSFET (N-Channel)
Voltage - Supply：10V ~ 20V
Logic Voltage - VIL, VIH：0.8V, 2.5V
Current - Peak Output (Source, Sink)：1.9A, 2.3A
Input Type：Non-Inverting
Rise / Fall Time (Typ)：40ns, 20ns
Operating Temperature：-40°C ~ 125°C (TA)
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)：600 V

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LF2181NTR

Overview

The LF2181NTR is a floating high-side gate driver designed for bootstrap operation up to 600V. It drives two N-channel MOSFETs or IGBTs in a half-bridge configuration. The device features typical source peak drive current of 1.9A and sink peak drive current of 2.3A. Input voltage range is 0.8 to 2.5V. Rise time is 40 to 60ns, and fall time is 20 to 25ns. Operating temperature spans -40°C to 125°C. Input delay is 180ns, and output delay is 220ns.

Feature Summary

Floating high-side driver capability for bootstrap operation up to 600V
Dual channel design for driving N-channel MOSFETs or IGBTs in half-bridge configurations
Integrated voltage regulators and control circuits for simplified power management

Applications

Half-bridge motor drive systems
High-side switching applications requiring bootstrap operation
IGBT and MOSFET gate driving in power electronics

Procurement Notes

Verify the exact part number suffix against official Littelfuse documentation to ensure correct package and tape/reel specifications. Confirm that the supplier provides genuine components with traceable origin. Check for any specific handling requirements related to electrostatic discharge protection during storage and assembly.

Selection Notes

Select this component when a floating high-side driver with 600V isolation is required for half-bridge topologies. Ensure the input logic voltage levels match the 0.8 to 2.5V range. Consider the drive current capabilities of 1.9A source and 2.3A sink for the target MOSFET or IGBT load. Verify thermal performance within the -40°C to 125°C operating range.

Part Context

The LF2181NTR belongs to Littelfuse's gate driver portfolio, specifically designed for power distribution and load driving applications. It integrates multiple voltage regulators and control functions onto a single chip to simplify system design. This series supports efficient management of system power while reducing component count and cost in industrial and automotive power stages.