ZHCSK78A september 2019 – august 2023 BQ21061
PRODUCTION DATA
- 1
- 1 特性
- 2 應(yīng)用
- 3 說(shuō)明
- 4 Revision History
- 5 Pin Configuration and Functions
- 6 Specifications
-
7 Detailed Description
- 7.1 Overview
- 7.2 Functional Block Diagram
- 7.3
Feature Description
- 7.3.1 Linear Charger and Power Path
- 7.3.2 Protection Mechanisms
- 7.3.3 VDD LDO
- 7.3.4 Load Switch/LDO Output and Control
- 7.3.5 PMID Power Control
- 7.3.6 System Voltage (PMID) Regulation
- 7.3.7 MR Wake and Reset Input
- 7.3.8 14-Second Watchdog for HW Reset
- 7.3.9 Faults Conditions and Interrupts ( INT)
- 7.3.10 Power Good ( PG) Pin
- 7.3.11 External NTC Monitoring (TS)
- 7.3.12 I2C Interface
- 7.4 Device Functional Modes
- 7.5 Register Map
- 8 Application and Implementation
- 9 Power Supply Recommendations
- 10Layout
- 11Device and Documentation Support
- 12Mechanical, Packaging, and Orderable Information
封裝選項(xiàng)
機(jī)械數(shù)據(jù) (封裝 | 引腳)
- YFP|20
散熱焊盤(pán)機(jī)械數(shù)據(jù) (封裝 | 引腳)
訂購(gòu)信息
7.3.11.1 TS Thresholds
The BQ21061 monitors the TS voltage and sends an interrupt to the host whenever it crosses the VHOT, VWARM, VCOOL and VCOLD thresholds which correspond to different temperature thresholds based on the NTC resistance and biasing. These thresholds may be adjusted through I2C by the host. The device will also disable charging if TS pin exceeds the VTS_OPEN threshold.
The TS biasing circuit is shown in Figure 7-8. Note that the respective VTS for TCOLD (0°C), TCOOL (10°C), TWARM (45°C) and THOT (60°C) changes for every NTC, therefore the threshold values may need to be adjusted through I2C based on the supported NTC type.
Figure 7-8 TS Bias Functional DiagramThe BQ21061 supports by default the following thresholds for a 10-K? NTC.
| THRESHOLD | TEMPERATURE (°C) | VTS (V) |
|---|---|---|
| Open | -- | >0.9 |
| Cold | 0 | 0.585 |
| Cool | 10 | 0.514 |
| Warm | 45 | 0.265 |
| Hot | 60 | 0.185 |