ZHCSN01
December 2022
BQ25628
,
BQ25629
PRODUCTION DATA
1
特性
2
应用
3
说明
4
Revision History
5
说明(续)
6
Device Comparison
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
Electrical Characteristics
8.6
Timing Requirements
8.7
Typical Characteristics
9
Detailed Description
9.1
Overview
9.2
Functional Block Diagram
9.3
Feature Description
9.3.1
Power-On-Reset (POR)
9.3.2
Device Power Up from Battery
9.3.3
Device Power Up from Input Source
9.3.3.1
REGN LDO Power Up
9.3.3.2
Poor Source Qualification
9.3.3.3
D+/D– Detection Sets Input Current Limit (BQ25629)
9.3.3.4
ILIM Pin (BQ25628 Only)
9.3.3.5
Input Voltage Limit Threshold Setting (VINDPM Threshold)
9.3.3.6
Converter Power-Up
9.3.4
Power Path Management
9.3.4.1
Narrow VDC Architecture
9.3.4.2
Dynamic Power Management
9.3.4.3
High Impedance Mode
9.3.5
Battery Charging Management
9.3.5.1
Autonomous Charging Cycle
9.3.5.2
Battery Charging Profile
9.3.5.3
Charging Termination
9.3.5.4
Thermistor Qualification
9.3.5.4.1
Advanced Temperature Profile in Charge Mode
9.3.5.4.2
TS Pin Thermistor Configuration
9.3.5.4.3
Cold/Hot Temperature Window in OTG Mode
9.3.5.4.4
JEITA Charge Rate Scaling
9.3.5.4.5
TS_BIAS Pin
9.3.5.5
Charging Safety Timers
9.3.6
USB On-The-Go (OTG)
9.3.6.1
Boost OTG Mode
9.3.6.2
Bypass OTG Mode
9.3.6.3
PMID Voltage Indicator ( PMID_GD)
9.3.7
Integrated 12-Bit ADC for Monitoring
9.3.8
Status Outputs ( STAT, INT)
9.3.8.1
Charging Status Indicator (STAT)
9.3.8.2
Interrupt to Host ( INT)
9.3.9
BATFET Control
9.3.9.1
Shutdown Mode
9.3.9.2
Ship Mode
9.3.9.3
System Power Reset
9.4
Device Functional Modes
9.4.1
Host Mode and Default Mode
9.4.2
Register Bit Reset
9.5
Programming
9.5.1
Serial Interface
9.5.1.1
Data Validity
9.5.1.2
START and STOP Conditions
9.5.1.3
Byte Format
9.5.1.4
Acknowledge (ACK) and Not Acknowledge (NACK)
9.5.1.5
Target Address and Data Direction Bit
9.5.1.6
Single Write and Read
9.5.1.7
Multi-Write and Multi-Read
9.6
Register Maps
9.6.1
Register Programming
9.6.2
BQ25628 Registers
10
Application and Implementation
10.1
Application Information
10.2
Typical Application
10.2.1
Design Requirements
10.2.2
Detailed Design Procedure
10.2.2.1
Inductor Selection
10.2.2.2
Input Capacitor
10.2.2.3
Output Capacitor
10.2.3
Application Curves
11
Power Supply Recommendations
12
Layout
12.1
Layout Guidelines
12.2
Layout Example
13
Device and Documentation Support
13.1
Device Support
13.1.1
第三方产品免责声明
13.2
Documentation Support
13.2.1
Related Documentation
13.3
接收文档更新通知
13.4
支持资源
13.5
Trademarks
13.6
Electrostatic Discharge Caution
13.7
术语表
14
Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
RYK|18
MPQF634
散热焊盘机械数据 (封装 | 引脚)
订购信息
zhcsn01_oa
1
特性
适用于单节电池的高效 1.5MHz 同步开关模式降压充电器
输入电压为 5V 时,输出电流低至 25mA,效率大于 90%
充电终止范围为
灵活的 JEITA 曲线,可在过热条件下实现安全充电
BATFET 控制,支持关断、运输模式和完全系统复位
纯电池模式下静态电流 1.5µA
运输模式下电池漏电流为 0.15µA
关断模式下电池漏电流为 0.1µA
支持升压模式运行以为附件供电
升压模式运行支持 3.84V 至 5.2V 输出
对于 5V PMID,升压效率大于 90%,升压电流低至 100mA
支持宽输入源
3.9V 至 18V
宽输入工作电压范围,绝对最大输入电压为 26V
通过输入电压调节 (VINDPM) 和输入电流调节 (IINDPM) 更大限度地提高电源功率
VINDPM 阈值自动跟踪电池电压
使用 15mΩ BATFET 实现高效电池运行
窄 VDC (NVDC) 电源路径管理
系统在电池耗尽或无电池的情况下可瞬时启动
适配器满载时,电池可为系统补充电量
灵活的自主或 I
2
C 控制模式
用于电压、电流和温度监测的集成 12 位 ADC
高精度
充电电压调节范围为 ±0.4%
充电电流调节范围为 ±5%
输入电流调节范围为 ±5%
安全
热调节和热关断
输入、系统和电池过压保护
电池和转换器过流保护
充电安全计时器