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Product Overview
The LM5642XMTX/NOPB is a high-performance dual synchronous buck controller from Texas Instruments, designed for efficient step-down DC-DC conversion. It operates over a wide input voltage range of 4.5V to 36V, making it suitable for a variety of industrial, automotive, and telecom applications. The device features two independent outputs with adjustable frequency up to 1 MHz, integrated high-side and low-side drivers, and protection features including overcurrent, overvoltage, and thermal shutdown. Housed in a compact 28-TSSOP package, it offers a space-saving solution for power management.
Detailed Technical Specifications
| Parameter |
Value |
| Input Voltage Range |
4.5V to 36V |
| Output Voltage Range |
0.8V to 90% of VIN |
| Output Current per Channel |
Up to 20A (external FETs) |
| Switching Frequency |
200 kHz to 1 MHz (adjustable) |
| Number of Outputs |
2 (dual synchronous buck) |
| Efficiency |
Up to 95% |
| Operating Temperature |
-40°C to +125°C |
| Package |
28-TSSOP |
| Protection Features |
OCP, OVP, UVLO, Thermal Shutdown |
Key Features
- Dual synchronous buck controller with independent enable and soft-start
- Wide input voltage range: 4.5V to 36V
- Adjustable switching frequency up to 1 MHz for optimized size and efficiency
- Integrated high-side and low-side gate drivers
- Current-mode control for fast transient response
- Programmable output voltage via external resistors
- Comprehensive protection: overcurrent, overvoltage, undervoltage lockout, thermal shutdown
- Available in 28-TSSOP package for compact designs
Target Applications
- 5G base station power supplies (e.g., for remote radio units)
- Automotive infotainment and dashboard systems
- Industrial control systems and PLCs
- Telecom and networking equipment (e.g., routers, switches)
- Distributed power architectures
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
LM5642XMTX/NOPB. Our core advantages include:
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24/7 Global Customer Support: Professional team providing instant
quotes and technical support worldwide.
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In-stock Inventory, Same-day Shipping: We maintain localized stock;
orders confirmed before 4 PM are shipped the same day.
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HK-SZ Synergy, Flexible Settlement: Direct global shipping from
Shenzhen with support for HK bank transfers and multi-currency.
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Escrow Secured Transactions: We support Escrow.com for secure
transactions, ensuring peace of mind for batch orders.
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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.
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100% Original & Authentic: All components are guaranteed to
be authentic with strict quality control.
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RoHS Compliant: All electronic components comply with international
environmental and safety standards.
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Original Factory Packaging: We maintain original factory packaging
and seals to ensure ESD protection and physical integrity.
產品概述
LM5642XMTX/NOPB 是德州儀器 (TI) 的一款高性能雙路同步降壓控制器,專為高效降壓 DC-DC 轉換而設計。它支持 4.5V 至 36V 的寬輸入電壓範圍,適用於各種工業、汽車和電信應用。該器件具有兩個獨立輸出,可調頻率高達 1 MHz,集成高側和低側驅動器,並提供過流、過壓和熱關斷等保護功能。採用緊湊的 28-TSSOP 封裝,為電源管理提供節省空間的解決方案。
詳細技術參數
| 參數 |
數值 |
| 輸入電壓範圍 |
4.5V 至 36V |
| 輸出電壓範圍 |
0.8V 至 90% VIN |
| 每通道輸出電流 |
高達 20A (外部 FET) |
| 開關頻率 |
200 kHz 至 1 MHz (可調) |
| 輸出數量 |
2 (雙路同步降壓) |
| 效率 |
高達 95% |
| 工作溫度 |
-40°C 至 +125°C |
| 封裝 |
28-TSSOP |
| 保護功能 |
OCP, OVP, UVLO, 熱關斷 |
核心特性
- 雙路同步降壓控制器,帶獨立使能和軟啟動
- 寬輸入電壓範圍:4.5V 至 36V
- 可調開關頻率高達 1 MHz,優化尺寸和效率
- 集成高側和低側柵極驅動器
- 電流模式控制,實現快速瞬態響應
- 通過外部電阻可編程輸出電壓
- 全面保護:過流、過壓、欠壓鎖定、熱關斷
- 採用 28-TSSOP 封裝,適合緊湊設計
典型應用場景
- 5G 基站電源 (例如用於遠程射頻單元)
- 汽車信息娛樂和儀表板系統
- 工業控制系統和 PLC
- 電信和網絡設備 (例如路由器、交換機)
- 分布式電源架構
環球供應鏈與批發合作夥伴方案
在 Jasin Chip,我們為 LM5642XMTX/NOPB 提供全面的供應鏈與批發解決方案。
我們的核心優勢包括:
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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。
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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。
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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。
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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。
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