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  • BQ25150 具有 10nA 运输模式、高级电源路径管理和控制功能、ADC 和 LDO 的 I2C 控制型 1 节电池 500mA 线性充电器

    • ZHCSJD3C july   2018  – april 2023 BQ25150

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  • BQ25150 具有 10nA 运输模式、高级电源路径管理和控制功能、ADC 和 LDO 的 I2C 控制型 1 节电池 500mA 线性充电器
  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Revision History
  6. 5 说明（续）
  7. 6 Device Key Default Settings
  8. 7 Pin Configuration and Functions
  9. 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 Electrical Characteristics
    6. 8.6 Timing Requirements
    7. 8.7 Typical Characteristics
  10. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1  Linear Charger and Power Path
        1. 9.3.1.1 Battery Charging Process
          1. 9.3.1.1.1 Pre-Charge
          2. 9.3.1.1.2 Fast Charge
          3. 9.3.1.1.3 Pre-Charge to Fast Charge Transitions and Charge Current Ramping
          4. 9.3.1.1.4 Termination
        2. 9.3.1.2 JEITA and Battery Temperature Dependent Charging
        3. 9.3.1.3 Input Voltage Based Dynamic Power Management (VINDPM) and Dynamic Power Path Management (DPPM)
        4. 9.3.1.4 Battery Supplement Mode
      2. 9.3.2  Protection Mechanisms
        1. 9.3.2.1 Input Over-Voltage Protection
        2. 9.3.2.2 Safety Timer and I2C Watchdog Timer
        3. 9.3.2.3 Thermal Protection and Thermal Charge Current Foldback
        4. 9.3.2.4 Battery Short and Over Current Protection
        5. 9.3.2.5 PMID Short Circuit
        6. 9.3.2.6 Maximum Allowable Charging Current (IMAX)
      3. 9.3.3  ADC
        1. 9.3.3.1 ADC Operation in Active Battery Mode and Low Power Mode
        2. 9.3.3.2 ADC Operation When VIN Present
        3. 9.3.3.3 ADC Measurements
        4. 9.3.3.4 ADC Programmable Comparators
      4. 9.3.4  VDD LDO
      5. 9.3.5  Load Switch / LDO Output and Control
      6. 9.3.6  PMID Power Control
      7. 9.3.7  MR Wake and Reset Input
        1. 9.3.7.1 MR Wake or Short Button Press Functions
        2. 9.3.7.2 MR Reset or Long Button Press Functions
      8. 9.3.8  14-Second Watchdog for HW Reset
      9. 9.3.9  Faults Conditions and Interrupts ( INT)
        1. 9.3.9.1 Flags and Fault Condition Response
      10. 9.3.10 Power Good ( PG) Pin
      11. 9.3.11 External NTC Monitoring (TS)
        1. 9.3.11.1 TS Thresholds
      12. 9.3.12 External NTC Monitoring (ADCIN)
      13. 9.3.13 I2C Interface
        1. 9.3.13.1 F/S Mode Protocol
    4. 9.4 Device Functional Modes
      1. 9.4.1 Ship Mode
      2. 9.4.2 Low Power
      3. 9.4.3 Active Battery
      4. 9.4.4 Charger/Adapter Mode
      5. 9.4.5 Power-Up/Down Sequencing
    5. 9.5 Register Map
      1. 9.5.1 I2C Registers
  11. 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 Input (IN/PMID) Capacitors
        2. 10.2.2.2 VDD, LDO Input and Output Capacitors
        3. 10.2.2.3 TS
        4. 10.2.2.4 IMAX Selection
        5. 10.2.2.5 Recommended Passive Components
      3. 10.2.3 Application Curves
  12. 11Power Supply Recommendations
  13. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  14. 13Device and Documentation Support
    1. 13.1 Device Support
      1. 13.1.1 第三方产品免责声明
    2. 13.2 Documentation Support
      1. 13.2.1 Related Documentation
    3. 13.3 接收文档更新通知
    4. 13.4 支持资源
    5. 13.5 Trademarks
    6. 13.6 静电放电警告
    7. 13.7 术语表
  15. 14Mechanical, Packaging, and Orderable Information
  16. 重要声明
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Data Sheet

BQ25150 具有 10nA 运输模式、高级电源路径管理和控制功能、ADC 和 LDO 的 I2C 控制型 1 节电池 500mA 线性充电器

本资源的原文使用英文撰写。 为方便起见，TI 提供了译文；由于翻译过程中可能使用了自动化工具，TI 不保证译文的准确性。 为确认准确性，请务必访问 ti.com 参考最新的英文版本（控制文档）。

1 特性

  • 具有 1.25mA 至 500mA 快速充电电流范围的线性电池充电器
    • 0.5% 精度 I2C 可编程电池稳压电压，范围为 3.6V 至 4.6V 且阶跃为 10mV
    • 可配置的终止电流，支持低至 0.5mA
    • 可耐受 20V 的输入，具有 3.4V 至 5.5V 的典型输入电压工作范围
    • 可编程热负荷曲线，完全可配置的热、温、凉、冷阈值
  • 电源路径管理，用于系统供电和电池充电
    • 动态电源路径管理可以对通过弱适配器充电进行优化
    • 利用高级 I2C 控制，主机可以根据需要断开电池或适配器
  • I2C 可配置负载开关或高达 150mA LDO 输出
    • 可编程范围为 0.6V 至 3.7V，阶跃为 100mV
  • 超低 Iddq，可延长电池寿命
    • 10nA 运输模式电池 Iq
    • 在为系统供电时具有 400nA 的 Iq（PMID 和 VDD 打开）
  • 通过可调节计时器实现单按钮唤醒和重置输入
    • 支持系统循环通电和硬件重置
  • 16 位 ADC
    • 可以对充电电流、电池热敏电阻和电池、输入和系统 (PMID) 电压进行监控
    • 通用 ADC 输入
  • 常开 1.8V VDD LDO，支持高达 10mA 的负载
  • 20 引脚 2mm x 1.6mm CSP 封装
  • 总解决方案尺寸为 12mm2

2 应用

  • 耳麦、耳塞和助听器
  • 智能手表和健身附件
  • 患者监护仪和便携式医疗设备

3 说明

BQ25150 是一款高度集成的电池充电管理 IC，它集成了用于可穿戴设备的常用功能，即充电器、输出电压轨、用于电池和系统监控的 ADC 以及按钮控制器。

器件信息
器件型号 (1) 封装 封装尺寸（标称值）
BQ25150 DSBGA (20) 2.00mm x 1.60mm
(1) 如需了解所有可用封装，请参阅数据表末尾的可订购产品附录。
GUID-831EF43C-DE8F-4131-ABE7-24B322D735A6-low.gif 简化原理图
GUID-4B6791F8-81B9-408C-BFBE-F4855FBEA622-low.gif解决方案面积

4 Revision History

Changes from Revision B (February 2019) to Revision C (April 2023)

  • 更改了标题说明Go
  • Added Key Device Default Settings Table.Go
  • Added clarification to LP pin description.Go
  • Added clarification to ADCIN pin description.Go
  • Changed maximum recommended PMID output current.Go
  • Changed maximum RON(BAT-PMID) in Electrical Characteristics.Go
  • Changed tHW_RESET_WD test conditions and MAX valueGo
  • Changed tRESET_WARN and tHW_RESET parametersGo
  • Changed Input Voltage Based Dynamic Power Management (VINDPM) and Dynamic Power Path Management (DPPM)section to simplify descriptionGo
  • Added clarification to ADC functionality when VIN is present.Go
  • Added clarification to ADC %ICHARGE readingGo
  • Added more details to the ADC Programmable Comparator description.Go
  • Deleted incorrect reference to LS_CTRL pin and updated descriptionGo
  • Added clarification on LDO voltage programmabilityGo
  • Updated Figure 9-3 Go
  • Changed tHW_RESET_WARN to tRESET_WARN and VIN presence to valid VIN presence in Section 9.3.7.2 Go
  • Added clarification to TS biasing operationGo
  • Deleted as well from Section 9.4.1 descriptionGo
  • Added link to BQ25150 Setup Guide and Setup Guide ToolGo
  • Changed registers 0x42 to 0x4F from R/W-X to R-X and R/W to R for typeGo
  • Changed IBAT_OCP_ILIM 2b10 setting description from 1500 mA to DisabledGo
  • Added clarification to TS_EN bit functionalityGo
  • Changed from TS to ground to from IMAX to ground in Section 10.2.2.3 Go
  • Added TS Biasing FigureGo
  • Added VINLS bypass capacitor layout guidelineGo

Changes from Revision A (October 2018) to Revision B (February 2019)

  • 从标题中删除了 12 位Go
  • 将“受限”更改为“公开”Go
  • Changed ADC reported resolution TYP value from 12 to 16 Go
  • Changed TSHUTDOWN TYP value from 115°C to 125°C Go
  • Changed PUSHBUTTON TIMERS (/MR) number of decimal points in MIN/MAX from 3 to 2Go
  • Deleted tDGL_SC parameterGo
  • Deleted tLP_ENTRY parameter Go
  • Changed default state description for watchdog in Section 9.3.2.2 Go
  • Deleted 12-Bit from Section 9.3.3 Go
  • Changed LS/LDO1 to VLSLDO in Section 9.3.5 Go
  • Added Section 9.3.8 Go
  • Changed THERM_REG_2:0 reset value in #GUID-EDB5D2AD-4BE8-439B-8CA5-AC408605368B/I2C_I2C_CHARGERCTRL1 Go
  • Changed 1_ADCALARM_ABOVE in Table 9-51 Go
  • Changed 2_ADCALARM_ABOVE in Table 9-53 Go
  • Changed 3_ADCALARM_ABOVE in Table 9-55 Go

Changes from Revision * (July 2018) to Revision A (October 2018)

  • 将“预告信息”更改为“量产数据”Go

5 说明（续）

BQ25150 IC 集成了可以对小型电池进行快速准确充电的线性充电器。该器件支持高达 500 mA 的充电电流并支持低至 0.5 mA 的终止电流，从而实现最充分的充电。该器件采用标准锂离子充电曲线分三个阶段对电池进行充电：预充电、恒流和恒压调节。

该器件集成了高级电源路径管理和控制，使该器件可以为系统提供电源，同时甚至能够使用很差的适配器为电池充电。主机还可以通过 I2C 控制电源路径，允许它断开输入适配器和/或电池，而无需实际移除它们。单按钮输入无需单独的按钮控制器 IC，从而减少了整体解决方案占用空间。按钮输入可用于唤醒功能或重置系统。12 位有效 ADC 可实现精确的电池电压监控，并可用于实现低 Iq 监测，以监控电池运行状况。它还可用于使用连接到 TS 引脚的热敏电阻以及外部系统信号（通过 ADCIN 引脚）来测量电池温度。运行和关断期间的低静态电流有助于延长电池寿命。可通过 I2C 接口对输入电流限制、充电电流、LDO 输出电压和其他参数进行编程，从而使 BQ25150 成为非常灵活的充电解决方案。该器件包含一个基于电压的 JEITA 兼容（或标准热/冷）电池组热敏电阻监控输入 (TS)，可监控电池温度并自动更改充电参数，从而防止电池在超出其安全温度范围的温度下充电。还可以通过 I2C 对温度阈值进行编程，从而使主机能够自定义热负荷曲线。该充电器针对 5V USB 输入进行了优化，具有 20V 的绝对最大容差，可承受线路瞬变。该器件还集成了一个用于为无线电或处理器提供静态轨的线性稳压器，可以通过 I2C 独立地为其提供电源并对其进行控制。

6 Device Key Default Settings

DEFAULT SETTING BQ25150 BQ25155
Fast Charge Current (ICHARGE) 10 mA 10 mA
Pre-Charge Current (IPRECHARGE) 2.5 mA 2.5 mA
Termination Current (ITERM) 10% of ICHARGE 10%of ICHARGE
Input Current Ljmit (IILIM) 100 mA 500 mA
VIN DPM Enabled Disabled
LDO Output Voltage (VLDO) 1.8 V 1.8 V
Ship Mode Wake Timer 2 seconds 0.125 seconds
DEVICE_ID 0x20h 0x35h

7 Pin Configuration and Functions

GUID-4D943B70-DF3D-45D5-8633-FE7620F5B00D-low.gif Figure 7-1 YFP Package20-Pin DSBGATop View
Table 7-1 Pin Functions
PIN I/O DESCRIPTION
NAME NO.
IN A1 I DC Input Power Supply. IN is connected to the external DC supply. Bypass IN to GND with at least 1 µF of capacitance using a ceramic capacitor.
PMID A2, B2 I/O High Side Bypass Connection. Connect at least 10-µF ceramic capacitor (at least 3 µF of ceramic capacitance with DC bias de-rating) from PMID to GND as close to the PMID and GND pins as possible. Note: Shorting PMID to IN pin is not recommended as it may cause large discharge current from battery to IN if IN pin is not truly floating.
GND A4 PWR Ground connection. Connect to the ground plane of the circuit.
VDD D1 O Digital supply LDO. Connect at least 4.7-µF capacitor to ground.
CE C2 I Charge Enable. Drive CE low or leave disconnected to enable charging when VIN is valid. Drive CE high to disable charge when VIN is present. CE is pulled low internally with 900-kΩ resistor. CE has no effect when VIN is not present.
SCL E3 I/O I2C Interface Clock. Connect SCL to the logic rail through a 10-kΩ resistor.
SDA E2 I I2C Interface Data. Connect SDA to the logic rail through a 10-kΩ resistor.
LP D3 I Low Power Mode Enable. Drive this pin low to set the device in low power mode when powered by the battery. This pin must be driven high to allow I2C communication when VIN is not present. LP is pulled low internally with 900-kΩ resistor. This pin has no effect when VIN is present.
IMAX C3 I Connect a 10-kΩ or lower resistor to this pin to set the maximum allowable fast charge current. Must not be left floating.
INT D2 O INT is an open-drain output that signals fault interrupts. When a fault occurs, a 128-µs pulse is sent out as an interrupt for the host. INT is enabled/disabled using the MASK_INT bit in the control register.
ADCIN C4 I Input Channel to the ADC. Maximum ADC range 1.2 V. Leave floating or connect to ground if not used.
MR C1 I Manual Reset Input. MR is a general purpose input that must be held low for greater than tHWRESET to go into HW Reset and power cycle the output rails. If MR is also used to wake up the device out of Ship Mode when pressed for at least tWAKE2. MR has in internal 125-kΩ pull-up resistor to BAT.
LS/LDO D4 O Load Switch or LDO output. Connect 2.2 µF of ceramic capacitance to this pin to assure stability. Be sure to account for capacitance bias voltage derating when selecting the capacitor. If LDO is not to be used,, the pin may be shorted to VINLS
VINLS E4 I Input to the Load Switch / LDO output. Connect at least 1 µF of ceramic capacitance from this pin to ground.
BAT A3, B3 I/O Battery Connection. Connect to the positive terminal of the battery. Bypass BAT to GND with at least 1 µF of ceramic capacitance.
TS B4 I Battery Pack NTC Monitor. Connect TS to a 10-kΩ NTC Thermistor in parallel to a 10-kΩ resistor. If TS function is not to be used connect a 5-kΩ resistor from TS to ground.
PG B1 O Open-drain Power Good status indication output. PG is pulled to GND when VIN is above VBAT+ VSLP and less than VOVP. PG is high-impedance when the input power is not within specified limits. Connect PG to the desired logic voltage rail using a 1-kΩ to 100-kΩ resistor, or use with an LED for visual indication. PG can also be configured through I2C as a push-button level shifted output ( MR), where the output of the PG pin reflects the status of the MR input, but pulled up to the desired logic voltage rail using a 1-kΩ to 100-kΩ resistor. The PG pin can also be configured as a general purpose open drain output.
VIO E1 I System IO supply. Connect to system IO supply to allow level shifting of input signals (SDA, SCL, LP and CE) to the device internal digital domain. Connect to VDD when external IO supply is not available.

8 Specifications

 
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