ZHCSPQ2 December 2022 BQ28Z620
PRODUCTION DATA
- 1 特性
- 2 應用
- 3 說明
- 4 Revision History
- 5 說明（續）
- 6 BQ28Z620 Changes from BQ28Z610-R1
- 7 Pin Configuration and Functions
-
8 Specifications
- 8.1 Absolute Maximum Ratings
- 8.2 ESD Ratings
- 8.3 Recommended Operating Conditions
- 8.4 Thermal Information
- 8.5 Supply Current
- 8.6 Power Supply Control
- 8.7 Power-On Reset (POR)
- 8.8 Internal 1.8-V LDO
- 8.9 Current Wake Comparator
- 8.10 Coulomb Counter
- 8.11 ADC Digital Filter
- 8.12 ADC Multiplexer
- 8.13 Cell Balancing Support
- 8.14 Internal Temperature Sensor
- 8.15 NTC Thermistor Measurement Support
- 8.16 High-Frequency Oscillator
- 8.17 Low-Frequency Oscillator
- 8.18 Voltage Reference 1
- 8.19 Voltage Reference 2
- 8.20 Instruction Flash
- 8.21 Data Flash
- 8.22 Current Protection Thresholds
- 8.23 Current Protection Timing
- 8.24 N-CH FET Drive (CHG, DSG)
- 8.25 I2C Interface I/O
- 8.26 I2C Interface Timing
- 8.27 Typical Characteristics
-
9 Detailed Description
- 9.1 Overview
- 9.2 Functional Block Diagram
- 9.3
Feature Description
- 9.3.1 Battery Parameter Measurements
- 9.3.2 Coulomb Counter (CC)
- 9.3.3 CC Digital Filter
- 9.3.4 ADC Multiplexer
- 9.3.5 Analog-to-Digital Converter (ADC)
- 9.3.6 ADC Digital Filter
- 9.3.7 Internal Temperature Sensor
- 9.3.8 External Temperature Sensor Support
- 9.3.9 Power Supply Control
- 9.3.10 Power-On Reset
- 9.3.11 Bus Communication Interface
- 9.3.12 I2C Timeout
- 9.3.13 Cell Balancing Support
- 9.3.14 N-Channel Protection FET Drive
- 9.3.15 Low Frequency Oscillator
- 9.3.16 High Frequency Oscillator
- 9.3.17 1.8-V Low Dropout Regulator
- 9.3.18 Internal Voltage References
- 9.3.19 Overcurrent in Discharge Protection
- 9.3.20 Short-Circuit Current in Charge Protection
- 9.3.21 Short-Circuit Current in Discharge 1 and 2 Protection
- 9.3.22 Primary Protection Features
- 9.3.23 Gas Gauging
- 9.3.24 Charge Control Features
- 9.3.25 Authentication
- 9.4 Device Functional Modes
- 10Applications and Implementation
- 11Power Supply Recommendations
- 12Layout
- 13Device and Documentation Support
- 14Mechanical, Packaging, and Orderable Information
3 說明
德州儀器 (TI) 的 BQ28Z620 器件是一款高度集成的高精度 1-2 節串聯電池電量監測計和保護解決方案，可實現自主的充電器控制和電池均衡。
BQ28Z620 器件通過主模式 I2C 廣播充電電流和電壓信息，可實現自主電荷控制，從而消除通常由系統主機控制器產生的軟件開銷。
BQ28Z620 器件提供了一個基于電池包的全集成解決方案，該解決方案具備閃存可編程的定制精簡指令集 CPU (RISC)、安全保護以及認證功能，適用于 1-2 節串聯鋰離子和鋰聚合物電池包。
BQ28Z620 電量監測計通過 I2C 兼容接口進行通信，并將超低功耗的高速 TI BQBMP 處理器、高精度模擬測量功能、集成閃存、大量的外設和通信端口、N 溝道 FET 驅動器以及 SHA-1 認證轉換響應器融合于一套完整的高性能電池管理解決方案。
器件信息
| 器件型號(1) | 封裝 | 封裝尺寸（標稱值） |
|---|---|---|
| BQ28Z620 | VSON (12) | 4mm x 2.5mm |
(1) 如需了解所有可用封裝，請參閱數據表末尾的可訂購產品附錄。
簡化原理圖
無線（藍牙）揚聲器應用方框圖