ZHCSDC8A December 2014 – November 2017
PRODUCTION DATA.
- 1 特性
- 2 应用
- 3 说明
- 4 修订历史记录
- 5 说明 （续）
- 6 Pin Configuration and Functions
- 7 Specifications
-
8 Detailed Description
- 8.1 Overview
- 8.2 Functional Block Diagram
- 8.3
Feature Description
- 8.3.1 Device Power Up
- 8.3.2 Power Path Management
- 8.3.3 Battery Charging Management
- 8.3.4 Status Outputs (PG, STAT, and INT)
- 8.3.5 Protections
- 8.3.6 Serial Interface
- 8.4 Device Functional Modes
- 8.5
Register Map
- 8.5.1
I2C Registers
- 8.5.1.1 Input Source Control Register REG00 (reset = 00110000, or 30)
- 8.5.1.2 Power-On Configuration Register REG01 (reset = 00011011, or 1B)
- 8.5.1.3 Charge Current Control Register REG02 (reset = 01100000, or 60)
- 8.5.1.4 Pre-Charge/Termination Current Control Register REG03 (reset = 00010001, or 11)
- 8.5.1.5 Charge Voltage Control Register REG04 (reset = 10110010, or B2)
- 8.5.1.6 Charge Termination/Timer Control Register REG05 (reset = 10011010, or 9A)
- 8.5.1.7 IR Compensation / Thermal Regulation Control Register REG06 (reset = 00000011, or 03)
- 8.5.1.8 Misc Operation Control Register REG07 (reset = 01001011, or 4B)
- 8.5.1.9 System Status Register REG08
- 8.5.1.10 Fault Register REG09
- 8.5.1.11 Vender / Part / Revision Status Register REG0A (reset = 00101111, or 2F)
- 8.5.1
I2C Registers
- 9 Application and Implementation
- 10Power Supply Recommendations
- 11Layout
- 12器件和文档支持
- 13机械、封装和可订购信息
8.3.3.4.1 JEITA Guideline Compliance
To improve the safety of charging Li-ion batteries, JEITA guideline was released on April 20, 2007. The guideline emphasized the importance of avoiding a high charge current and high charge voltage at certain low and high temperature ranges.
To initiate a charge cycle, the voltage on TS pin must be within the VT1 to VT5 thresholds. If TS voltage exceeds the T1–T5 range, the controller suspends charging and waits until the battery temperature is within the T1 to T5 range. At cool temperature (T1–T2), JEITA recommends the charge current to be reduced to at least half of the charge current or lower. At warm temperature (T3–T5), JEITA recommends charge voltage less than 4.1 V.
The bq24193 provides flexibility voltage/current settings beyond the JEITA requirement. The voltage setting at warm temperature (T3–T5) can be 4.2 V or 4.05 V (REG07 bit[4]). The current setting at cool temperature (T1–T2) can be further reduced to 20% of fast charge current (REG05 bit[0]).
The resistor bias network has been updated as below.
Select 0°C to 60°C range for Li-ion or Li-polymer battery,
RTHT1 = 27.28 kΩ
RTHT5 = 3.02 kΩ
RT1 = 2.27 kΩ
RT2 = 6.86 kΩ