ZHCSNP0A august   2020  – march 2021 BQ25171-Q1

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Revision History
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Timing Requirements
    7. 6.7 典型特性
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Device Power Up from Input Source
        1. 7.3.1.1 ISET Pin Detection
        2. 7.3.1.2 CHM_TMR Pin Detection
        3. 7.3.1.3 VSET Pin Detection
        4. 7.3.1.4 Charger Power Up
      2. 7.3.2 Battery Charging Features
        1. 7.3.2.1 Lithium-Ion Battery Charging Profile
          1. 7.3.2.1.1 NiMH Battery Charging Profile
        2. 7.3.2.2 Charge Termination and Battery Recharge
        3. 7.3.2.3 Charging Safety Timers
        4. 7.3.2.4 Battery Cold, Hot Temperature Qualification (TS Pin)
      3. 7.3.3 Status Outputs (STAT1, STAT2)
        1. 7.3.3.1 Charging Status Indicator (STAT1, STAT2)
      4. 7.3.4 Protection Features
        1. 7.3.4.1 Input Overvoltage Protection (VIN OVP)
        2. 7.3.4.2 Output Overvoltage Protection (BAT OVP)
        3. 7.3.4.3 Output Overcurrent Protection (BAT OCP)
        4. 7.3.4.4 Thermal Regulation and Thermal Shutdown (TREG and TSHUT)
    4. 7.4 Device Functional Modes
      1. 7.4.1 Shutdown or Undervoltage Lockout (UVLO)
      2. 7.4.2 Sleep Mode
      3. 7.4.3 Active Mode
        1. 7.4.3.1 Standby Mode
      4. 7.4.4 Fault Mode
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 1s LiFePO4 Charger Design Example
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Program the Fast Charge Current, ISET:
          2. 8.2.1.2.2 TS Function
        3. 8.2.1.3 Application Curves
      2. 8.2.2 2s Li-Ion Charger with Power Path Design Example
        1. 8.2.2.1 Design Requirements
      3. 8.2.3 4s NiMH Charger Design Example
        1. 8.2.3.1 Design Requirements
  10. 9 Power Supply Recommendations
  11. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  12. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 第三方产品免责声明
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 支持资源
    4. 11.4 Trademarks
    5. 11.5 静电放电警告
    6. 11.6 术语表
  13. 12Mechanical, Packaging, and Orderable Information

请参考 PDF 数据表获取器件具体的封装图。

机械数据 (封装 | 引脚)
  • DRC|10
散热焊盘机械数据 (封装 | 引脚)

5 Pin Configuration and Functions

GUID-20200728-CA0I-GGPM-1P3P-CF5L75TSSJK4-low.gif Figure 5-1 VSON Package10-Pin(Top View)
Table 5-1 Pin Functions
PIN I/O DESCRIPTION
NAME NUMBER
IN 1 P Input power, connected to external DC supply. Bypass IN with at least 1-μF capacitor to GND, placed close to the IC.
ISET 2 I Programs the fast-charge current setting. External resistor from ISET to GND defines fast-charge current value. Recommended range is 30 kΩ (10 mA) to 375 Ω (800 mA). ICHG = KISET / RISET. Precharge current is defined as 20% of ICHG. Termination current is defined as 10% of ICHG.
CE 3 I Active Low Charge Enable pin. Battery charging is enabled when CE pin is low. IC remains in Shutdown Mode and battery charging is disabled when CE pin is high. An internal pulldown resistor (RPD_CE) enables the IC by default if this pin is floating.
TS 4 I Temperature Qualification Voltage Input. Connect a negative temperature coefficient (NTC) thermistor directly from TS to GND (AT103-2 recommended). Charge suspends when the TS pin voltage is out of range. If TS function is not needed, connect an external 10-kΩ resistor from TS to GND.
GND 5 – Ground pin
CHM_TMR 6 I Programs the chemistry and charge time to be used with a pulldown resistor. Valid resistor range is 3.6 kΩ to 100 kΩ, values outside this range will suspend charge. Refer to Section 7.3.1.2 for voltage level details.
STAT1 7 O Open drain charge status 1 output. Connect to pullup rail via 10-kΩ resistor.
STAT2 8 O Open drain charge status 2 output. Connect to pullup rail via 10-kΩ resistor.
VSET 9 I Programs the regulation voltage for OUT pin with a pull-down resistor. Valid resistor range is 3.6 kΩ to 100 kΩ, values outside this range will suspend charge. Refer to Section 7.3.1.3 for voltage level details.
OUT 10 P Battery Connection. System load may be connected in parallel to battery. Bypass OUT with at least 1-μF capacitor to GND, placed close to the IC.
Thermal Pad — — Exposed pad beneath the IC for heat dissipation. Solder thermal pad to the board with vias connecting to solid GND plane.