L9945TR ST Motor Driver | 64-TQFP-EP (10x10) | 8-Channel, 1.5A

Product Overview

The L9945TR is a highly integrated 8-channel low-side driver from STMicroelectronics, designed for automotive and industrial applications. It features 8 independent outputs with a maximum current of 1.5A per channel, capable of driving resistive, inductive, and capacitive loads. The device operates from a supply voltage range of 4.5V to 36V, making it suitable for 12V and 24V systems. It includes built-in protection features such as overcurrent, overtemperature, and load dump protection, ensuring robust operation in harsh environments. The L9945TR is housed in a 64-pin TQFP-EP (10x10 mm) package with an exposed pad for enhanced thermal dissipation.

Detailed Technical Specifications

Key Features

• 8-channel low-side driver with SPI control
• 1.5 A continuous output current per channel
• Wide supply voltage range: 4.5 V to 36 V
• Integrated protection: overcurrent, overtemperature, load dump, reverse battery
• Diagnostic functions via SPI
• Low quiescent current in standby mode
• Exposed pad package for improved thermal performance

Target Applications

• Automotive: Engine control units (ECU), transmission control, body control modules (BCM), lighting systems (LED drivers, relays)
• Industrial: Programmable logic controllers (PLC), motor control for factory automation, solenoid drivers
• Specific examples: 5G base station power management, dashboard backlighting, HVAC actuator control

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for L9945TR. Our core advantages include:

• 24/7 Global Customer Support: Professional team providing instant quotes and technical support worldwide.
• In-stock Inventory, Same-day Shipping: We maintain localized stock; orders confirmed before 4 PM are shipped the same day.
• HK-SZ Synergy, Flexible Settlement: Direct global shipping from Shenzhen with support for HK bank transfers and multi-currency.
• Escrow Secured Transactions: We support Escrow.com for secure transactions, ensuring peace of mind for batch orders.
• BOM Kitting & Sampling Services: Specialized sourcing for testing samples and urgent shortage components.

Quality Assurance & Compliance

Jasin Chip guarantees that all delivered products are 100% original factory stock with full quality assurance and traceability.

• 100% Original & Authentic: All components are guaranteed to be authentic with strict quality control.
• RoHS Compliant: All electronic components comply with international environmental and safety standards.
• Original Factory Packaging: We maintain original factory packaging and seals to ensure ESD protection and physical integrity.

產品概述

L9945TR 是意法半導體（STMicroelectronics）推出的一款高度集成的8通道低邊驅動器，專為汽車和工業應用設計。它具有8個獨立輸出，每通道最大電流1.5A，能夠驅動電阻性、電感性和電容性負載。器件工作電源電壓範圍為4.5V至36V，適用於12V和24V系統。它內置過流、過溫和負載突降保護等保護功能，確保在惡劣環境下的穩健運行。L9945TR 採用64引腳 TQFP-EP（10x10 mm）封裝，帶有裸露焊盤以增強散熱性能。

詳細技術參數

核心特性

• 8通道低邊驅動器，SPI控制
• 每通道連續輸出電流1.5 A
• 寬電源電壓範圍：4.5 V 至 36 V
• 集成保護：過流、過溫、負載突降、反接電池
• 通過SPI進行診斷功能
• 待機模式下低靜態電流
• 裸露焊盤封裝，改善熱性能

典型應用場景

• 汽車：發動機控制單元（ECU）、變速箱控制、車身控制模塊（BCM）、照明系統（LED驅動器、繼電器）
• 工業：可編程邏輯控制器（PLC）、工廠自動化電機控制、電磁閥驅動器
• 具體示例：5G基站電源管理、儀表盤背光照明、HVAC執行器控制

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 L9945TR 提供全面的供應鏈與批發解決方案。 我們的核心優勢包括：

• 全天候環球客戶支援：專業團隊為您提供即時報價及技術支援，無需漫長等待。
• 現貨庫存，即日發貨：確保現貨充足。下午 4 點前確認訂單，即可安排當天寄出。
• 深港聯動，結算靈活：深圳直發全球，物流高效可靠；支援香港銀行戶口轉賬及多幣種結算。
• Escrow 擔保交易：支援 Escrow.com 平台交易，保障買賣雙方權益，小批量訂單亦可安心在線下單。
• BOM 配單與樣板服務：提供樣板測試及認證支援。專注一站式 BOM 配套及緊急缺料採購服務。

品質保證與合規

Jasin Chip 承諾所有出貨產品均為原廠正貨，具備完善的品質保證及產品可追溯性。

• 100% 原廠正貨：承諾所有供應零件均為原裝現貨，品質嚴格把關，來源清晰可追溯。
• 符合 RoHS 認證：所有電子元器件均符合國際環保標準及相關安全認證。
• 原廠封裝保護：嚴格保留原廠原始包裝及封條，確保物流過程中的靜電防護 (ESD) 與物理安全。

以上產品均為原廠正貨，提供 BOM 配單及現貨庫存支援，歡迎查詢。

HONG KONG JASIN SEMICONDUCTOR TECHNOLOGY COMPANY LIMITED
Trusted Partner for Automotive, Industrial, and Hard-to-find Components.
WhatsApp: +852 5209 9691 | Email: [email protected]