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.

다운로드 스크립트와 함께 비디오 보기 동영상

More Information and Sample Availability

  • Full data sheet and other information are available. Request now
  • If you would like to consider a universal standards compliant, up to 20V USB Type-C PD Port to power the charger, please consider TPS25750

관심 가지실만한 유사 제품

open-in-new 대안 비교
비교 대상 장치와 동일한 기능을 지원하는 핀 대 핀
BQ25968 활성 I2C 제어 단일 셀, 고효율, ADC, 6A 스위치 캡 고속 충전기 Same footprint with 6-A charging current.
다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능
BQ25960 활성 I2C 제어 1셀 8A 스위치 캡 병렬 배터리 충전기 - 바이패스 및 이중 입력 선택기 지원 Small footprint with same performance

기술 자료

star =TI에서 선정한 이 제품의 인기 문서
검색된 결과가 없습니다. 검색어를 지우고 다시 시도하십시오.
4개 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
Application note How to use the BQ25970 for Flash Charging (Rev. A) PDF | HTML 2022/10/20
EVM User's guide Using the BQ25970EVM-893 (Rev. A) 2018/12/21
Application note 具有高效率电荷泵(Charge Pump Charger)充电系统介绍 2018/08/06

설계 및 개발

추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.

평가 보드

BQ25970EVM-893 — bq25970 완전한 충전기 평가 모듈

The bq2597x evaluation module (EVM) is a complete charger module for evaluating the highly-integrated battery switch in WCSP package for 1 cell Li-Ion and Li-polymer battery in a wide range of smartphone and tablet.
사용 설명서: PDF
TI.com에서 구매 불가
PCB 레이아웃

bq25970EVM-893

SLURAY5.ZIP (804 KB)
레퍼런스 디자인

TIDA-01582 — USB 전원 공급 프로그래머블 전원 공급을 위한 스위치드 커패시터 고속 충전 레퍼런스 설계

The goal of this reference design is to show the total system performance when using the switched-cap fast charge topology in a smart phone application. The system includes using a smart wall adapter that supports USB Power Delivery (PD) Programmable Power Supply (PPS) specifications to reduce (...)
Design guide: PDF
회로도: PDF
패키지 CAD 기호, 풋프린트 및 3D 모델
DSBGA (YFF) 56 Ultra Librarian

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

권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.

지원 및 교육

TI 엔지니어의 기술 지원을 받을 수 있는 TI E2E™ 포럼

콘텐츠는 TI 및 커뮤니티 기고자에 의해 "있는 그대로" 제공되며 TI의 사양으로 간주되지 않습니다. 사용 약관을 참조하십시오.

품질, 패키징, TI에서 주문하는 데 대한 질문이 있다면 TI 지원을 방문하세요. ​​​​​​​​​​​​​​

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