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

BQ24707

활성

독립 콤퍼레이터와 회로 보호를 지원하는 SMBus 1~4셀 벅 배터리 충전 컨트롤러

지금 주문
데이터 시트

이 제품의 최신 버전이 있습니다

open-in-new 대안 비교
비교 대상 장치보다 업그레이드된 기능을 지원하는 즉각적 대체품
BQ24725A 활성 N 채널 전력 MOSFET 선택기를 갖춘 SMBus 1~4셀 벅 배터리 충전 컨트롤러 This is a lower quiescent current alternative.

BQ24707

활성
데이터 시트 지금 주문

제품 상세 정보

Number of series cells 1, 2, 3, 4 Charge current (max) (A) 8 Vin (max) (V) 24 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 1.024 Battery charge voltage (max) (V) 19.2 Absolute max Vin (max) (V) 30 Control topology Switch-Mode Buck Control interface SMBus Features Input OVP, Power Path Vin (min) (V) 4.5 Rating Catalog Operating temperature range (°C) -40 to 85
Number of series cells 1, 2, 3, 4 Charge current (max) (A) 8 Vin (max) (V) 24 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 1.024 Battery charge voltage (max) (V) 19.2 Absolute max Vin (max) (V) 30 Control topology Switch-Mode Buck Control interface SMBus Features Input OVP, Power Path Vin (min) (V) 4.5 Rating Catalog Operating temperature range (°C) -40 to 85
VQFN (RGR) 20 12.25 mm² 3.5 x 3.5
  • SMBus Host-Controlled NMOS-NMOS
    Synchronous Buck Converter With Programmable
    615 kHz, 750 kHz, and 885 kHz Switching
    Frequency
  • Real-Time System Control on ILIM Pin to Limit
    Charge Current
  • Enhanced Safety Features for Overvoltage
    Protection, Overcurrent Protection, Battery,
    Inductor, and MOSFET Short-Circuit Protection
  • Programmable Input Current, Charge Voltage,
    Charge Current Limits
    • ±0.5% Charge Voltage Accuracy up to 19.2 V
    • ±3% Charge Current Accuracy up to 8.128 A
    • ±3% Input Current Accuracy up to 8.064 A
    • ±2% 20× Adapter Current or Charge Current
      Output Accuracy
  • Programmable Adapter Detection and Indicator
  • Independent Comparator With Internal Reference
  • Integrated Soft-Start
  • Integrated Loop Compensation
  • AC Adapter Operating Range 5 V to 24 V
  • 15-µA Off-State Battery Discharge Current
  • 20-pin 3.5 mm × 3.5 mm QFN Package
  • bq24707: ACOK Delay Default 1.3 s
  • bq24707A: ACOK Delay Default 1.2 ms
  • APPLICATIONS
    • Portable Notebook Computers, UMPCs, Ultra-Thin
      Notebooks, and Netbooks
    • Personal Digital Assistants
    • Handheld Terminals
    • Industrial and Medical Equipment
    • Portable Equipment

All other trademarks are the property of their respective owners
  • SMBus Host-Controlled NMOS-NMOS
    Synchronous Buck Converter With Programmable
    615 kHz, 750 kHz, and 885 kHz Switching
    Frequency
  • Real-Time System Control on ILIM Pin to Limit
    Charge Current
  • Enhanced Safety Features for Overvoltage
    Protection, Overcurrent Protection, Battery,
    Inductor, and MOSFET Short-Circuit Protection
  • Programmable Input Current, Charge Voltage,
    Charge Current Limits
    • ±0.5% Charge Voltage Accuracy up to 19.2 V
    • ±3% Charge Current Accuracy up to 8.128 A
    • ±3% Input Current Accuracy up to 8.064 A
    • ±2% 20× Adapter Current or Charge Current
      Output Accuracy
  • Programmable Adapter Detection and Indicator
  • Independent Comparator With Internal Reference
  • Integrated Soft-Start
  • Integrated Loop Compensation
  • AC Adapter Operating Range 5 V to 24 V
  • 15-µA Off-State Battery Discharge Current
  • 20-pin 3.5 mm × 3.5 mm QFN Package
  • bq24707: ACOK Delay Default 1.3 s
  • bq24707A: ACOK Delay Default 1.2 ms
  • APPLICATIONS
    • Portable Notebook Computers, UMPCs, Ultra-Thin
      Notebooks, and Netbooks
    • Personal Digital Assistants
    • Handheld Terminals
    • Industrial and Medical Equipment
    • Portable Equipment

All other trademarks are the property of their respective owners

The bq24707 and bq24707A devices are high-efficiency, synchronous battery chargers, offering low component count for space-constrained, multi-chemistry battery charging applications.

SMBus controlled input current, charge current, and charge voltage DACs allow for very high regulation accuracies that can be easily programmed by the system power management micro-controller.

The IC uses the internal input current register or external ILIM pin to throttle down PWM modulation to reduce the charge current.

The IC provides an IFAULT output to alarm if any MOSFET fault or input over current occurs. This alarm output allows users to turn off input power selectors when the fault occurs. Meanwhile, an independent comparator with internal reference is available to monitor input current, output current, or output voltage.

The IC charges one-, two-, three-, or four-series Li+ cells, and is available in a 20-pin, 3.5 × 3.5 mm QFN package.

The bq24707 and bq24707A devices are high-efficiency, synchronous battery chargers, offering low component count for space-constrained, multi-chemistry battery charging applications.

SMBus controlled input current, charge current, and charge voltage DACs allow for very high regulation accuracies that can be easily programmed by the system power management micro-controller.

The IC uses the internal input current register or external ILIM pin to throttle down PWM modulation to reduce the charge current.

The IC provides an IFAULT output to alarm if any MOSFET fault or input over current occurs. This alarm output allows users to turn off input power selectors when the fault occurs. Meanwhile, an independent comparator with internal reference is available to monitor input current, output current, or output voltage.

The IC charges one-, two-, three-, or four-series Li+ cells, and is available in a 20-pin, 3.5 × 3.5 mm QFN package.
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기술 자료

star =TI에서 선정한 이 제품의 인기 문서
검색된 결과가 없습니다. 검색어를 지우고 다시 시도하십시오.
4개 모두 보기
유형 직함 날짜
* Data sheet bq24707x 1-4 Cell Li+ Battery SMBus Charge Controller With Independent Comparator and Advanced Circuit Protection datasheet (Rev. C) PDF | HTML 2015/07/31
White paper Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) PDF | HTML 2024/04/30
Application note Autonomous Smart Battery Guide PDF | HTML 2021/10/15
Application note How to Review a Multicell Switching Charger Schematic 2011/09/21

설계 및 개발

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

계산 툴

SLUC203 — bq24725_725A_726_707_73x Calculation Tool

지원되는 제품 및 하드웨어

지원되는 제품 및 하드웨어

제품
배터리 충전기 IC
BQ24707 — 독립 콤퍼레이터와 회로 보호를 지원하는 SMBus 1~4셀 벅 배터리 충전 컨트롤러 BQ24707A — 독립 콤퍼레이터 및 고급 회로 보호를 제공하는 1~4셀 리튬 이온 배터리 충전 컨트롤러 BQ24725 — N 채널 전원 MOSFET 선택기를 지원하는 SMBus 2~4셀 벅 배터리 충전 컨트롤러 BQ24725A — N 채널 전력 MOSFET 선택기를 갖춘 SMBus 1~4셀 벅 배터리 충전 컨트롤러 BQ24735 — 터보 부스트 모드를 지원하는 SMBus 1~4셀 벅 배터리 충전 컨트롤러
다운로드
레퍼런스 디자인

TIDA-00038 — 다중 셀 동기 스위치모드 레퍼런스 디자인

This reference design is a complete charger module for evaluating a multicell (1 to 4 cells) synchronous notebook charger using the bq24707 device. It is designed to deliver up to 4 A of charge current to Li-ion or Li-polymer applications. The charge current is programmable by an SMBus interface (...)
Test report: PDF
회로도: PDF
패키지 핀 CAD 기호, 풋프린트 및 3D 모델
VQFN (RGR) 20 Ultra Librarian
TI의 평가 항목에 대한 표준 약관이 적용됩니다.

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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