ZHCSIF0N September 2008 – October 2021 BQ24072 , BQ24073 , BQ24074 , BQ24075 , BQ24079
PRODUCTION DATA
- 1 特性
- 2 应用
- 3 说明
- 4 Revision History
- 5 说明（续）
- 6 Device Comparison Table
- 7 Pin Configuration and Functions
- 8 Specifications
-
9 Detailed Description
- 9.1 Overview
- 9.2 Functional Block Diagram
- 9.3
Feature Description
- 9.3.1 Undervoltage Lockout (UVLO)
- 9.3.2 Power On
- 9.3.3 Overvoltage Protection (OVP)
- 9.3.4 Dynamic Power Path Management
- 9.3.5
Battery Charging
- 9.3.5.1 Charge Current Translator
- 9.3.5.2 Adjustable Termination Threshold (ITERM Input, BQ24074)
- 9.3.5.3 Termination Disable (TD Input, BQ24072, BQ24073)
- 9.3.5.4 Battery Detection and Recharge
- 9.3.5.5 Battery Disconnect (SYSOFF Input, BQ24075, BQ24079)
- 9.3.5.6 Dynamic Charge Timers (TMR Input)
- 9.3.5.7 Status Indicators ( PGOOD, CHG)
- 9.3.5.8 Thermal Regulation and Thermal Shutdown
- 9.3.6 Battery Pack Temperature Monitoring
- 9.4 Device Functional Modes
-
10Application and Implementation
- 10.1 Application Information
- 10.2 Typical Application
- 10.3 System Examples
- 11Power Supply Recommendations
- 12Layout
- 13Device and Documentation Support
- 14Mechanical, Packaging, and Orderable Information
8.6 Typical Characteristics
VIN = 6 V, EN1=1, EN2=0, BQ24073 application circuit, TA = 25°C, unless otherwise noted.
Figure 8-1 Thermal Regulation
Figure 8-3 Dropout Voltage vs Temperature No Input Supply
Figure 8-2 Dropout Voltage vs Temperature
Figure 8-4 BQ24072 Output Regulation Voltage vs Battery Voltage
Figure 8-5 BQ24072 Output Regulation Voltage vs Temperature
Figure 8-7 BQ24075, BQ24079 Output Regulation Voltage vs Temperature
Figure 8-9 BQ24072/ 73/ 75/ 79 Overvoltage Protection Threshold vs Temperature
Figure 8-11 BQ24074 Input Current Limit vs Input Voltage
Figure 8-13 Fastcharge Current vs Battery Voltage
Figure 8-15 Precharge Current vs Battery Voltage
Figure 8-6 BQ24073/ 74 Output Regulation Voltage vs Temperature
Figure 8-8 BAT Regulation Voltage vs Temperature
Figure 8-10 BQ24074 Overvoltage Protection Threshold vs Temperature
Figure 8-12 Fastcharge Current vs Battery Voltage
Figure 8-14 Precharge Current vs Battery Voltage