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

BQ25172

활성

QFN 패키지의 0.8A, 1~6셀 NiMH 독립형 선형 충전기

지금 주문
데이터시트

BQ25172

활성
데이터시트 지금 주문

제품 상세 정보

Number of series cells 1, 2, 3, 4, 5, 6 Charge current (max) (A) 0.8 Vin (max) (V) 18 Cell chemistry NiMH Battery charge voltage (max) (V) 10.5 Absolute max Vin (max) (V) 30 Control topology Linear Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation Vin (min) (V) 3 Rating Catalog Operating temperature range (°C) -40 to 125
Number of series cells 1, 2, 3, 4, 5, 6 Charge current (max) (A) 0.8 Vin (max) (V) 18 Cell chemistry NiMH Battery charge voltage (max) (V) 10.5 Absolute max Vin (max) (V) 30 Control topology Linear Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation Vin (min) (V) 3 Rating Catalog Operating temperature range (°C) -40 to 125
WSON (DSG) 8 4 mm² 2 x 2
  • Input voltage up to 30-V tolerant
  • Automatic Sleep Mode for low power consumption
    • 350-nA battery leakage current
    • 85-µA input leakage current when charge disabled
  • Supports 1- to 6-cell NiMH with intermittent-charging
  • External resistor programmable operation
    • VSET to set NiMH series cell-count from 1s to 6s
    • ISET to set charge current from 10 mA to 800 mA
    • TMR to set charge safety timer duration from 4 hr to 22 hr
  • High accuracy
    • ±0.5% charge voltage accuracy
    • ±10% charge current accuracy
  • Charging features
    • NTC thermistor input to monitor battery temperature
    • Cold and hot temperature charging disabled
    • VOUT_OVP reduced at cool temperatures
    • TS pin for charging function control
    • Open-drain output for status and fault indication
  • Integrated fault protection
    • 18-V IN overvoltage protection
    • VSET based OUT overvoltage protection
    • 1000-mA overcurrent protection
    • 125°C thermal regulation; 150°C thermal shutdown protection
    • OUT short-circuit protection
    • VSET, ISET, TMR pins short/open protection
  • Input voltage up to 30-V tolerant
  • Automatic Sleep Mode for low power consumption
    • 350-nA battery leakage current
    • 85-µA input leakage current when charge disabled
  • Supports 1- to 6-cell NiMH with intermittent-charging
  • External resistor programmable operation
    • VSET to set NiMH series cell-count from 1s to 6s
    • ISET to set charge current from 10 mA to 800 mA
    • TMR to set charge safety timer duration from 4 hr to 22 hr
  • High accuracy
    • ±0.5% charge voltage accuracy
    • ±10% charge current accuracy
  • Charging features
    • NTC thermistor input to monitor battery temperature
    • Cold and hot temperature charging disabled
    • VOUT_OVP reduced at cool temperatures
    • TS pin for charging function control
    • Open-drain output for status and fault indication
  • Integrated fault protection
    • 18-V IN overvoltage protection
    • VSET based OUT overvoltage protection
    • 1000-mA overcurrent protection
    • 125°C thermal regulation; 150°C thermal shutdown protection
    • OUT short-circuit protection
    • VSET, ISET, TMR pins short/open protection

The BQ25172 is an integrated 800-mA linear charger for 1-cell to 6-cell NiMH batteries targeted at industrial and medical applications. The device has a single power output that charges the battery. The system load can be placed in parallel with the battery, as long as the average system load does not prevent the battery from being charged fully within the safety timer duration. When the system load is placed in parallel with the battery, the charge current is shared between the system and the battery.

The device charges NiMH cells in constant current mode only and terminates the charge cycle when the programmable timer expires or the battery voltage exceeds the VOUT_OVP threshold. In all charge phases, an internal control loop monitors the IC junction temperature and reduces the charge current if an internal temperature threshold TREG, is exceeded.

The charger power stage and charge current sense functions are fully integrated. The charger function has high accuracy current, charge status display, and timer-based charge termination. The series cell-count, charge current, and charge timer are programmable through external resistors. Intermittent charging allows a NiMH battery to automatically recharge for a reduced timer duration once its voltage falls below the recharge threshold.

The BQ25172 is an integrated 800-mA linear charger for 1-cell to 6-cell NiMH batteries targeted at industrial and medical applications. The device has a single power output that charges the battery. The system load can be placed in parallel with the battery, as long as the average system load does not prevent the battery from being charged fully within the safety timer duration. When the system load is placed in parallel with the battery, the charge current is shared between the system and the battery.

The device charges NiMH cells in constant current mode only and terminates the charge cycle when the programmable timer expires or the battery voltage exceeds the VOUT_OVP threshold. In all charge phases, an internal control loop monitors the IC junction temperature and reduces the charge current if an internal temperature threshold TREG, is exceeded.

The charger power stage and charge current sense functions are fully integrated. The charger function has high accuracy current, charge status display, and timer-based charge termination. The series cell-count, charge current, and charge timer are programmable through external resistors. Intermittent charging allows a NiMH battery to automatically recharge for a reduced timer duration once its voltage falls below the recharge threshold.
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관심 가지실만한 유사 제품

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다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능
BQ25171-Q1 활성 차량용, 800mA 선형 배터리 충전기 - 1~2셀 리튬 이온, LiFePO4 및 1~6셀 NiMH용 This part can support Li+ battery charging.

기술 문서

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모두 보기3
유형 직함 날짜
* Data sheet BQ25172: 800-mA Linear Battery Charger for 1- to 6-Cell NiMH Batteries datasheet PDF | HTML 2022/06/01
Certificate BQ25172EVM EU RoHS Declaration of Conformity (DoC) 2022/09/02
User guide BQ25172EVM Evaluation Module User's Guide PDF | HTML 2022/07/22

설계 및 개발

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

평가 보드

BQ25172EVM — 800mA 1~6셀 NiMH 선형 배터리 충전기용 BQ25172 평가 모듈

BQ25172 평가 모듈(EVM)은 사용자가 BQ25172 디바이스의 다양한 작동과 기능을 평가하고 테스트할 수 있도록 설계되었습니다.

사용 설명서: PDF | HTML
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패키지 핀 다운로드
WSON (DSG) 8 옵션 보기
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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

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