BQ25171-Q1
- AEC-Q100 qualified for automotive applications
- Temperature grade 1: –40°C ≤ TA ≤ 125°C
- HBM ESD classification level 2
- CDM ESD classification level C4B
- 40-V load-dump tolerant to support charging back-up battery directly from main battery, 3-V to 18-V operating
- Automatic Sleep Mode for low power consumption
- 350-nA battery leakage current
- 2-µA input leakage current when charge disabled
- Support multi-chemistry battery
- 1- to 2-cell Li-Ion, Li-Poly, and LiFePO4
- 1- to 6-cell NiMH with intermittent-charging support
- External resistor programmable operation
- VSET to set battery regulation voltage from 3.5 V to 8.4 V for Li-Ion, or 1- to 6-cell for NiMH
- ISET to set charge current from 10 mA to 800 mA
- CHM_TMR to set battery chemistry as Li+ or NiMH, and charge timer duration
- High accuracy
- ±0.5% charge voltage accuracy
- ±10% charge current accuracy
- Charging features
- Precharge current 20% of ISET
- Termination current 10% of ISET
- NTC thermistor input to monitor battery temperature
- CE pin for charging function control
- Two 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, CHM_TMR pins short/open protection
The BQ25171-Q1 is an automotive rated, 800-mA linear charger for 1-cell and 2-cell Li-Ion, Li-Polymer, and LiFePO4, in addition to 1-cell up to 6-cell NiMH battery 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 charging 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 has three phases for charging a Li-Ion battery: precharge to recover a fully discharged battery, fast-charge constant current to supply the bulk of the charge, and voltage regulation to reach full capacity.
The device charges a NiMH 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.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | BQ25171-Q1: Automotive, Standalone 800-mA Linear Battery Charger for 1- to 2-Cell Li-Ion, LiFePO4, and 1- to 6-Cell NiMH datasheet (Rev. A) | PDF | HTML | 2021. 3. 29 | |
| 애플리케이션 노트 | Designing the TS Pin Network for Battery Chargers with Current-Based Battery NTC Temperature Sensing | PDF | HTML | 2026. 6. 22 | ||
| 백서 | 나노-IQ 시스템의 성능 문제 해결 (Rev. A) | PDF | HTML | Download English Version (Rev.A) | 2024. 3. 25 | |
| 애플리케이션 노트 | Wireless Power Solutions for Battery Chargers | PDF | HTML | 2023. 4. 20 | ||
| 애플리케이션 노트 | Multi-Chemistry Charger in Low Battery Power Applications | PDF | HTML | 2022. 11. 17 | ||
| 애플리케이션 노트 | BQ25171-Q1 Quick Start Guide | PDF | HTML | 2021. 9. 29 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
BQ25171EVM — BQ25171 평가 모듈 1-2셀 리튬 이온, LiFePO4, 1-6셀 NiMH용 800mA 선형 배터리 충전기
PMP30963 — 프리 부스트, 충전기 및 1S 리튬-이온 연료 게이지를 제공하는 백업 배터리 레퍼런스 설계
이 설계는 응급 작동을 위해 1S 리튬-이온 배터리를 사용하는 오토모티브 백업 배터리를 보여줍니다. 기본 전원 입력은 12V 차량용 요구 사항을 충족하기 위해 6V~18V 정격(2.7V~36V 피크)입니다. 2차 전력 입력에는 단일 셀 리튬-이온 배터리를 모니터링하는 연료 게이지가 있고 2V~4.35V의 입력 전압을 지원합니다. 온보드 학습 부하를 통해 백업 배터리를 위한 수명 종료 감지를 구현할 수 있습니다.
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| VSON (DRC) | 10 | Ultra Librarian |
주문 및 품질
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.