BQ24251RGER TI Battery Charger IC | 24-VQFN (4x4) | 1A, Li-Ion, USB/AC

Product Overview

The BQ24251RGER from Texas Instruments is a highly integrated single-cell Li-Ion battery charger IC designed for space-constrained portable applications. It supports both USB and AC adapter inputs with automatic power path management, enabling instant system startup even with a deeply discharged battery. The device operates with an input voltage range of 3.9V to 6.2V and delivers up to 1A charge current. Its compact 24-VQFN (4x4mm) package makes it ideal for wearables, smartphones, and IoT devices.

Detailed Technical Specifications

Key Features

• Integrated power FETs for up to 1A charge current
• USB/AC input detection and automatic selection
• Dynamic power path management (NVDC) for instant system operation
• Battery temperature monitoring with NTC thermistor
• Programmable charge current and termination threshold
• Safety features: thermal regulation, overvoltage protection, and timer
• Small 4x4mm QFN package for space-constrained designs

Target Applications

• Smartphones and tablets
• Wearable devices (e.g., smartwatches, fitness bands)
• Portable medical devices (e.g., glucose monitors, pulse oximeters)
• Bluetooth headsets and earbuds
• IoT sensors and wireless modules
• 5G base station auxiliary power (backup battery charging)
• Automotive dashboard infotainment systems (low-power backup)

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for BQ24251RGER. 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

BQ24251RGER 是德州儀器（TI）推出的一款高度集成的單節鋰離子電池充電管理 IC，專為空間受限的便攜式應用設計。它支持 USB 和 AC 適配器輸入，並具有自動電源路徑管理功能，即使在電池深度放電的情況下也能實現系統即時啟動。該器件的工作輸入電壓範圍為 3.9V 至 6.2V，可提供高達 1A 的充電電流。其緊湊的 24-VQFN（4x4mm）封裝使其非常適合可穿戴設備、智能手機和物聯網設備。

詳細技術參數

核心特性

• 集成電源 FET，支持高達 1A 的充電電流
• USB/AC 輸入檢測與自動選擇
• 動態電源路徑管理（NVDC），實現系統即時操作
• 通過 NTC 熱敏電阻監測電池溫度
• 可編程充電電流和終止閾值
• 安全特性：熱調節、過壓保護和計時器
• 4x4mm QFN 小型封裝，適合空間受限設計

典型應用場景

• 智能手機和平板電腦
• 可穿戴設備（如智能手錶、健身手環）
• 便攜式醫療設備（如血糖儀、脈搏血氧儀）
• 藍牙耳機和耳塞
• 物聯網傳感器和無線模塊
• 5G 基站輔助電源（備用電池充電）
• 汽車儀表盤信息娛樂系統（低功耗備份）

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 BQ24251RGER 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]