ZHCSGY5A October   2017  – December 2017

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用范围
  3. 3 说明
    1.     典型应用电路
  4. 4 修订历史记录
  5. 5 说明 （续）
  6. 6 Device Comparison Table
  7. 7 Pin Configuration and Functions
    1.     Pin Functions
    2. 7.1 EN1/EN2 Settings
  8. 8 Specifications
    1. 8.1 Absolute Maximum Ratings
    2. 8.2 ESD Ratings
    3. 8.3 Recommended Operating Conditions
    4. 8.4 Thermal Information
    5. 8.5 Dissipation Ratings
    6. 8.6 Electrical Characteristics
    7. 8.7 Typical Characteristics
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Undervoltage Lockout (UVLO)
      2. 9.3.2 Power On
      3. 9.3.3 Overvoltage Protection (OVP)
      4. 9.3.4 Dynamic Power-Path Management
        1. 9.3.4.1 Input Source Connected (ADAPTER or USB)
          1. 9.3.4.1.1 Input DPM Mode (VIN-DPM)
          2. 9.3.4.1.2 DPPM Mode
          3. 9.3.4.1.3 Battery Supplement Mode
        2. 9.3.4.2 Input Source Not Connected
      5. 9.3.5 Battery Charging
        1. 9.3.5.1 Charge Current Translator
        2. 9.3.5.2 Battery Detection and Recharge
        3. 9.3.5.3 Battery Disconnect (SYSOFF Input, bq24076, bq24078)
        4. 9.3.5.4 Dynamic Charge Timers (TMR Input)
        5. 9.3.5.5 Status Indicators (PGOOD, CHG)
        6. 9.3.5.6 Thermal Regulation and Thermal Shutdown
      6. 9.3.6 Battery Pack Temperature Monitoring
    4. 9.4 Device Functional Modes
      1. 9.4.1 Sleep Mode
      2. 9.4.2 Explanation of Deglitch Times and Comparator Hysteresis
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
        1. 10.2.2.1 bq2407x Charger Design Example
          1. 10.2.2.1.1 System ON/OFF (SYSOFF) (bq24076 or bq24078 only)
        2. 10.2.2.2 Calculations
          1. 10.2.2.2.1 Program the Fast Charge Current (ISET):
          2. 10.2.2.2.2 Program the Input Current Limit (ILIM)
          3. 10.2.2.2.3 Program 6.25-hour Fast-Charge Safety Timer (TMR)
        3. 10.2.2.3 TS Function
        4. 10.2.2.4 CHG and PGOOD
        5. 10.2.2.5 Selecting IN, OUT, and BAT Pin Capacitors
      3. 10.2.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
    3. 12.3 Thermal Considerations
  13. 13器件和文档支持
    1. 13.1 器件支持
      1. 13.1.1 Third-Party Products Disclaimer
    2. 13.2 相关链接
    3. 13.3 接收文档更新通知
    4. 13.4 社区资源
    5. 13.5 商标
    6. 13.6 静电放电警告
    7. 13.7 Glossary
  14. 14机械、封装和可订购信息

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

8.7 Typical Characteristics

VIN = 6 V, EN1=1, EN2=0, bq24078 application circuit, TA = 25°C, unless otherwise noted.
bq24076 bq24078 ibat_v_temp_luscm2.gif
Figure 1. Thermal Regulation
bq24076 bq24078 do2_tj_luscm1.gif
IL = 1 A
Figure 3. Dropout Voltage vs Temperature
No Input Supply
bq24076 bq24078 vo_tj_luscm1.gif
VIN = 5 V, VBAT = 3.5 V, IL = 1 A
Figure 5. bq24078
Output Regulation Voltage vs Temperature
bq24076 bq24078 vbat_tj_luscm1.gif
Figure 7. bq24076
BAT Regulation Voltage vs Temperature
bq24076 bq24078 ibat_vbat_luscm1.gif
RISET = 900 Ω
Figure 9. Fastcharge Current vs Battery Voltage
bq24076 bq24078 ibat3_vbat_luscm1.gif
RISET = 900 Ω
Figure 11. Precharge Current vs Battery Voltage
bq24076 bq24078 do_tj_luscm1.gif
IL = 1 A
Figure 2. Dropout Voltage vs Temperature
bq24076 bq24078 vo_vbat_luscm1.gif
VIN = 5 V
Figure 4. bq24078
Output Regulation Voltage vs Battery Voltage
bq24076 bq24078 vo2_tj_luscm1.gif
VIN = 5 V, IL = 1 A
Figure 6. bq24076
Output Regulation Voltage vs Temperature
bq24076 bq24078 ovp2_tj_luscm1.gif
6.6 V
Figure 8. bq24076/78
Overvoltage Protection Threshold vs Temperature
bq24076 bq24078 ibat2_vbat_luscm1.gif
RISET = 3 kΩ
Figure 10. Fastcharge Current vs Battery Voltage
bq24076 bq24078 ibat4_vbat_luscm1.gif
RISET = 3 kΩ
Figure 12. Precharge Current vs Battery Voltage