BQ25731RSNR TI Battery Charger IC | 32-QFN (4x4) | I2C, 1-4 Cell Li-Ion

Product Overview

The BQ25731RSNR from Texas Instruments is a highly integrated, I2C-controlled battery charger IC designed for 1-4 cell Li-Ion and Li-Polymer batteries. It supports a wide input voltage range from 3.5V to 24V, making it suitable for various applications including portable devices, industrial equipment, and power tools. The device features NVDC (Narrow Voltage DC) power path management, enabling instant-on operation even with a deeply discharged battery. With programmable charge current up to 5A and charge voltage up to 18.8V, the BQ25731RSNR offers flexible charging solutions. The compact 32-QFN (4x4 mm) package ensures minimal board space consumption.

Detailed Technical Specifications

Key Features

• I2C programmable charge current, voltage, and input current limit
• NVDC power path management with instant-on
• High efficiency up to 97% with 1.2 MHz switching frequency
• Integrated battery FET and reverse blocking FET
• Battery detection and preconditioning
• Thermal regulation and protection
• JEITA compliant

Target Applications

• 5G base station backup battery management
• Portable medical devices (e.g., patient monitors)
• Industrial handheld terminals (e.g., barcode scanners)
• Power tools and garden equipment
• Dashboards and infotainment systems in automotive
• Portable speakers and audio equipment

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for BQ25731RSNR. 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

BQ25731RSNR 是德州儀器（TI）推出的一款高度集成的 I2C 控制電池充電器 IC，適用於 1-4 節鋰離子或鋰聚合物電池。它支持 3.5V 至 24V 的寬輸入電壓範圍，適用於便攜設備、工業設備和電動工具等多種應用。該器件採用 NVDC（窄電壓直流）電源路徑管理，即使在電池深度放電的情況下也能實現即時開機。可編程充電電流高達 5A，充電電壓高達 18.8V，提供靈活的充電解決方案。緊湊的 32-QFN（4x4 mm）封裝確保了最小的電路板空間佔用。

詳細技術參數

核心特性

• I2C 可編程充電電流、電壓和輸入電流限制
• NVDC 電源路徑管理，支持即時開機
• 1.2 MHz 開關頻率下效率高達 97%
• 集成電池 FET 和反向阻斷 FET
• 電池檢測和預處理
• 熱調節和保護
• 符合 JEITA 標準

典型應用場景

• 5G 基站備用電池管理
• 便攜醫療設備（如病人監護儀）
• 工業手持終端（如條碼掃描器）
• 電動工具和園林設備
• 汽車儀表盤和信息娛樂系統
• 便攜音箱和音頻設備

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 BQ25731RSNR 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]