SLUSG28 August 2025 BQ25176K
PRODUCTION DATA
- 1
- 1 Features
- 2 Applications
- 3 Description
- 4 Pin Configuration and Functions
- 5 Specifications
- 6 Detailed Description
- 7 Application and Implementation
- 8 Device and Documentation Support
- 9 Revision History
- 10Mechanical, Packaging, and Orderable Information
封裝選項
請參考 PDF 數(shù)據(jù)表獲取器件具體的封裝圖。
機械數(shù)據(jù) (封裝 | 引腳)
- DSG|8
散熱焊盤機械數(shù)據(jù) (封裝 | 引腳)
- DSG|8
訂購信息
6.3.2.5 Battery Temperature Qualification (TS Pin)
While charging, the device continuously monitors battery temperature by sensing the voltage at the TS pin. A negative temperature coefficient (NTC) thermistor should be connected between the TS and GND pins (recommend: 103AT-2). If temperature sensing is not required in the application, connect a fixed 10kΩ resistor from TS to GND to allow normal operation.
The TS function for BQ25176K is designed to follow the JEITA temperature standard for Li-Ion and Li-Poly batteries; charge current (ISET) and regulation voltage (VREG) are reduced based on battery temp (TS). There are four thresholds, Hot-55C, Warm-45C, Cool-10C and Cold-0C.
Normal operation occurs between 10°C and 45°C, charge current and voltage will be the normal values. When battery is in the Cool temperature range, between 0°C and 10°C, the charger current level is 20% of ISET value and regulation voltage is not changed. When the battery is in the Warm temperature range, between 45°C and 55°C, ISET is reduced by 50% and regulation voltage is reduced to 4.1V for VSET settings greater than 4.1V. Regulation voltage is not reduced during the Warm region for VSET settings less than 4.1V. Charge is suspended below Cold temp of 0°C and above Hot temp of 55°C. When charge is suspended device enters the STANDBY state, and blinks the STAT pin. Once battery temperature returns to normal conditions, charging resumes automatically. See Figure 6-3.
When charge current is reduced during Cool or Warm temp the safety timer runs at half the clock rate.
Figure 6-3 Standard JEITA Profile figureIn addition to battery temperature sensing, the TS pin can be used to disable the charger at any time by pulling TS voltage below VTS_ENZ. The device disables the charger and consumes ISD_IN_TS from the input supply. After the TS pin pull-down is released, the device may take up to tTS_DUTY_OFF to turn the ITS_BIAS back on. After the source is turned on, the TS pin voltage will go above VTS_EN, and re-enable the charger operation. The device treats this TS pin toggle as an input supply toggle, triggering Device Power Up From Input Source (Section 6.3.1).