홈 배터리 관리 IC 배터리 충전기 IC
홈
배터리 관리 IC
배터리 충전기 IC

BQ25971

활성

병렬 충전 애플리케이션을 위한 I2C 1셀 8A 스위치 커패시터 배터리 충전기

지금 주문
데이터 시트

BQ25971

활성
데이터 시트 지금 주문

제품 상세 정보

Number of series cells 1 Charge current (max) (A) 8 Vin (max) (V) 12 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 Battery charge voltage (min) (V) 3.5 Battery charge voltage (max) (V) 4.65 Absolute max Vin (max) (V) 20 Control topology Flash Charger Control interface I2C Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, Input OVP, Integrated ADC Vin (min) (V) 3.2 Rating Catalog Operating temperature range (°C) -40 to 85
Number of series cells 1 Charge current (max) (A) 8 Vin (max) (V) 12 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 Battery charge voltage (min) (V) 3.5 Battery charge voltage (max) (V) 4.65 Absolute max Vin (max) (V) 20 Control topology Flash Charger Control interface I2C Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, Input OVP, Integrated ADC Vin (min) (V) 3.2 Rating Catalog Operating temperature range (°C) -40 to 85
DSBGA (YFF) 56 10.7999999999999988 mm² 3 x 3.5999999999999996
  • 97% Efficient power stage for 8-A fast charge
  • Patent pending switched cap charger architecture optimized for 50% duty cycle
    • Input voltage is 2x battery voltage (3.5 V to 4.65 V)
    • Output current is 2x of input current (up to
      4.5 A)
    • Reduces power loss across the cable
  • Integrated programmable protection features for safe operation
    • Input over-voltage protection (BUS_OVP)
    • Input over-current protection (BUS_OCP) with adjustable alarm
    • Input over-voltage with external OVP FET (VAC_OVP up to 17 V, BQ25970 only)
    • Battery over-voltage protection (BAT_OVP) with adjustable alarm
    • Output over-voltage (VOUT_OVP)
    • Input over-current protection (BUS_OCP) with adjustable alarm
    • IBAT over-current protection (BAT_OCP) with adjustable alarm
    • Switching MOSFET cycle by cycle current limit
    • Battery temperature monitoring
    • Connector Temperature Monitoring
  • Programmable settings for system optimization
    • Optional VBATREG and IBATREG regulation for system load and wall adapter transients (BQ25970 only with External OVP FET)
    • STAT, FLAG, and MASK options for interrupts
    • ADC Readings and configuration
  • Integrated 12-bit effective analog-to digital converter (ADC)
    • ±0.5% BUS Voltage
    • ±0.5% VOUT Voltage
    • –0.4% to 0.2% BAT Voltage with differential sensing
    • ±1.5% BAT Current at 6 A with external RSENSE
    • ±1% BAT Temperature
    • ±1% BUS Temperature
    • ±4°C Die temperature
  • 97% Efficient power stage for 8-A fast charge
  • Patent pending switched cap charger architecture optimized for 50% duty cycle
    • Input voltage is 2x battery voltage (3.5 V to 4.65 V)
    • Output current is 2x of input current (up to
      4.5 A)
    • Reduces power loss across the cable
  • Integrated programmable protection features for safe operation
    • Input over-voltage protection (BUS_OVP)
    • Input over-current protection (BUS_OCP) with adjustable alarm
    • Input over-voltage with external OVP FET (VAC_OVP up to 17 V, BQ25970 only)
    • Battery over-voltage protection (BAT_OVP) with adjustable alarm
    • Output over-voltage (VOUT_OVP)
    • Input over-current protection (BUS_OCP) with adjustable alarm
    • IBAT over-current protection (BAT_OCP) with adjustable alarm
    • Switching MOSFET cycle by cycle current limit
    • Battery temperature monitoring
    • Connector Temperature Monitoring
  • Programmable settings for system optimization
    • Optional VBATREG and IBATREG regulation for system load and wall adapter transients (BQ25970 only with External OVP FET)
    • STAT, FLAG, and MASK options for interrupts
    • ADC Readings and configuration
  • Integrated 12-bit effective analog-to digital converter (ADC)
    • ±0.5% BUS Voltage
    • ±0.5% VOUT Voltage
    • –0.4% to 0.2% BAT Voltage with differential sensing
    • ±1.5% BAT Current at 6 A with external RSENSE
    • ±1% BAT Temperature
    • ±1% BUS Temperature
    • ±4°C Die temperature

The BQ2597x is a 97% efficient, 8-A battery charging solution using a switched cap architecture. This architecture and the integrated FETs are optimized to enable a 50% duty cycle, allowing the cable current to be half the current delivered to the battery, reducing the losses over the charging cable as well as limiting the temperature rise in the application.

The dual-phase architecture reduces the input cap requirements as well as reducing the output voltage ripple. When used with a standard charger such as the BQ2589x, the system enables the fastest charging at the lowest power loss from pre-charge through CC, CV, and termination.

The device integrates all the necessary protection features to ensure safe charging, including input over-voltage and over-current protection, output over-voltage and over-current protection, temperature sensing for the battery and cable, and monitoring the die temperature.

The device includes a 12-bit effective analog-to-digital converter (ADC) to provide bus voltage, bus current, output voltage, battery voltage, battery current, bus temperature, bat temperature, die temperature, and other calculated measurements needed to manage the charging of the battery from the smart wall adapter or power bank.

The BQ2597x is a 97% efficient, 8-A battery charging solution using a switched cap architecture. This architecture and the integrated FETs are optimized to enable a 50% duty cycle, allowing the cable current to be half the current delivered to the battery, reducing the losses over the charging cable as well as limiting the temperature rise in the application.

The dual-phase architecture reduces the input cap requirements as well as reducing the output voltage ripple. When used with a standard charger such as the BQ2589x, the system enables the fastest charging at the lowest power loss from pre-charge through CC, CV, and termination.

The device integrates all the necessary protection features to ensure safe charging, including input over-voltage and over-current protection, output over-voltage and over-current protection, temperature sensing for the battery and cable, and monitoring the die temperature.

The device includes a 12-bit effective analog-to-digital converter (ADC) to provide bus voltage, bus current, output voltage, battery voltage, battery current, bus temperature, bat temperature, die temperature, and other calculated measurements needed to manage the charging of the battery from the smart wall adapter or power bank.

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기술 자료

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1개 모두 보기
유형 직함 날짜
* Data sheet BQ25970, BQ25971 I2C Controlled Single Cell High Efficiency 8-A Switched Cap Fast Chargers With ADC datasheet (Rev. B) PDF | HTML 2020/04/20

설계 및 개발

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DSBGA (YFF) 56 Ultra Librarian
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주문 및 품질

포함된 정보:
  • RoHS
  • REACH
  • 디바이스 마킹
  • 납 마감/볼 재질
  • MSL 등급/피크 리플로우
  • MTBF/FIT 예측
  • 물질 성분
  • 인증 요약
  • 지속적인 신뢰성 모니터링
포함된 정보:
  • 팹 위치
  • 조립 위치

지원 및 교육

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