ZHCSDC8A December 2014 – November 2017
PRODUCTION DATA.
- 1 特性
- 2 應(yīng)用
- 3 說(shuō)明
- 4 修訂歷史記錄
- 5 說(shuō)明 （續(xù)）
- 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器件和文檔支持
- 13機(jī)械、封裝和可訂購(gòu)信息
封裝選項(xiàng)
機(jī)械數(shù)據(jù) (封裝 | 引腳)
- RGE|24
散熱焊盤機(jī)械數(shù)據(jù) (封裝 | 引腳)
- RGE|24
訂購(gòu)信息
8.3.5.1 Input Current Limit on ILIM
For safe operation, the bq24193 has an additional hardware pin on ILIM to limit maximum input current on ILIM pin. The input maximum current is set by a resistor from ILIM pin to ground as:
The actual input current limit is the lower value between ILIM setting and register setting (REG00[2:0]). For example, if the register setting is 111 for 3 A, and ILIM has a 353-Ω resistor to ground for 1.5 A, the input current limit is 1.5 A. ILIM pin can be used to set the input current limit rather than the register settings.
The device regulates ILIM pin at 1 V. If ILIM voltage exceeds 1 V, the device enters input current regulation (Refer to Dynamic Power Path Management section).
The voltage on the ILIM pin is proportional to the input current. The ILIM pin can be used to monitor the input current per Equation 4:
For example, if the ILIM pin sets 2 A, and the ILIM voltage is 0.6 V, the actual input current is 1.2 A. If the ILIM pin is open, the input current is limited to zero since ILIM voltage floats above 1 V. If the ILIM pin is short, the input current limit is set by the register.