ZHCSDI5C
March 2015 – October 2022
BQ25895
PRODUCTION DATA
1
特性
2
应用
3
说明
4
Revision History
5
说明(续)
6
Pin Configuration and Functions
7
Specifications
7.1
Absolute Maximum Ratings (1)
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics
7.6
Timing Requirements
7.7
Typical Characteristics
8
Detailed Description
8.1
Functional Block Diagram
8.2
Feature Description
8.2.1
Device Power-On-Reset (POR)
8.2.2
Device Power Up from Battery without Input Source
8.2.3
Device Power Up from Input Source
8.2.3.1
Power Up REGN Regulation (LDO)
8.2.3.2
Poor Source Qualification
8.2.3.3
Input Source Type Detection
8.2.3.3.1
D+/D– Detection Sets Input Current Limit
8.2.3.3.2
Force Input Current Limit Detection
8.2.3.4
Input Voltage Limit Threshold Setting (VINDPM Threshold)
8.2.3.5
Converter Power-Up
8.2.4
Input Current Optimizer (ICO)
8.2.5
Boost Mode Operation from Battery
8.2.6
Power Path Management
8.2.6.1
Narrow VDC Architecture
8.2.6.2
Dynamic Power Management
8.2.6.3
Supplement Mode
8.2.7
Battery Charging Management
8.2.7.1
Autonomous Charging Cycle
8.2.7.2
Battery Charging Profile
8.2.7.3
Charging Termination
8.2.7.4
Resistance Compensation (IRCOMP)
8.2.7.5
Thermistor Qualification
8.2.7.5.1
Cold/Hot Temperature Window in Charge Mode
8.2.7.5.2
Cold/Hot Temperature Window in Boost Mode
8.2.7.6
Charging Safety Timer
8.2.8
Battery Monitor
8.2.9
Status Outputs (STAT, and INT)
8.2.9.1
Charging Status Indicator (STAT)
8.2.9.2
Interrupt to Host (INT)
8.2.10
BATET (Q4) Control
8.2.10.1
BATFET Disable Mode (Shipping Mode)
8.2.10.2
BATFET Enable (Exit Shipping Mode)
8.2.10.3
BATFET Full System Reset
8.2.11
Current Pulse Control Protocol
8.2.12
Input Current Limit on ILIM
8.2.13
Thermal Regulation and Thermal Shutdown
8.2.13.1
Thermal Protection in Buck Mode
8.2.13.2
Thermal Protection in Boost Mode
8.2.14
Voltage and Current Monitoring in Buck and Boost Mode
8.2.14.1
Voltage and Current Monitoring in Buck Mode
8.2.14.1.1
Input Overvoltage (ACOV)
8.2.14.1.2
System Overvoltage Protection (SYSOVP)
8.2.14.2
Current Monitoring in Boost Mode
8.2.14.2.1
Boost Mode Overvoltage Protection
8.2.15
Battery Protection
8.2.15.1
Battery Overvoltage Protection (BATOVP)
8.2.15.2
Battery Over-Discharge Protection
8.2.15.3
System Overcurrent Protection
8.2.16
Serial Interface
8.2.16.1
Data Validity
8.2.16.2
START and STOP Conditions
8.2.16.3
Byte Format
8.2.16.4
Acknowledge (ACK) and Not Acknowledge (NACK)
8.2.16.5
Target Address and Data Direction Bit
8.2.16.6
Single Read and Write
8.2.16.7
Multi-Read and Multi-Write
8.3
Device Functional Modes
8.3.1
Host Mode and Default Mode
8.4
Register Maps
8.4.1
REG00
8.4.2
REG01
8.4.3
REG02
8.4.4
REG03
8.4.5
REG04
8.4.6
REG05
8.4.7
REG06
8.4.8
REG07
8.4.9
REG08
8.4.10
REG09
8.4.11
REG0A
8.4.12
REG0B
8.4.13
REG0C
8.4.14
REG0D
8.4.15
REG0E
8.4.16
REG0F
8.4.17
REG10
8.4.18
REG11
8.4.19
REG12
8.4.20
REG13
8.4.21
REG14
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Inductor Selection
9.2.2.2
Buck Input Capacitor
9.2.2.3
System Output Capacitor
9.2.3
Application Curves
9.3
System Examples
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
Device and Documentation Support
12.1
Device Support
12.1.1
第三方产品免责声明
12.2
接收文档更新通知
12.3
支持资源
12.4
Trademarks
12.5
术语表
12.6
Electrostatic Discharge Caution
13
Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
RTW|24
MPQF167C
散热焊盘机械数据 (封装 | 引脚)
RTW|24
QFND125K
订购信息
zhcsdi5c_oa
zhcsdi5c_pm
1
特性
高效 5A、1.5MHz 开关模式降压充电
2A 充电电流下的充电效率为 93%;3A 充电电流下的充电效率为 91%
针对高电压输入(9V 至 12V)进行了优化
低功耗 PFM 模式,适合轻载运行
升压模式操作,可调输出电压范围为 4.5V 至 5.5V
具有高达 3.1A 输出和 500KHz 至 1.5MHz 可选频率的升压转换器
5V/1A 输出时的升压效率为 93%
集成控制功能,可实现充电模式与升压模式间的切换
单个输入,支持 USB 输入和可调高电压适配器
支持 3.9V 至 14V 输入电压范围
输入电流限制(100mA 至 3.25A,分辨率为 50mA),支持 USB2.0、USB3.0 标准和高电压适配器
通过输入电压限制(最高 14V)实现最大功率跟踪,适用于各类适配器
自动检测 USB SDP、CDP、DCP 以及非标准适配器
输入电流优化器 (ICO),无需过载适配器即可最大限度地提高输入功率
充电器输出与电池终端间的电阻补偿 (IRCOMP)
借助 11mΩ 电池放电 MOSFET 实现超高的电池放电效率,放电电流高达 9A
集成 ADC,用于系统监视
(电压、温度和充电电流)
窄 VDC (NVDC) 电源路径管理
无需电池或深度放电的电池即可瞬时启动
电池充电模式下实现理想的二极管运行
BATFET 控制,支持运输模式、唤醒和完全系统复位
灵活的自主和 I
2
C 模式,可实现出色的系统性能
高集成度包括所有 MOSFET、电流感测和环路补偿
12µA 低电池漏电流,支持运输模式
高精度
±0.5% 充电电压调节
±5% 充电电流调节
±7.5% 输入电流调节
安全
用于充电模式和升压模式的电池温度检测
热调节和热关断