BQ25170
- 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-cell Li-Ion, Li-Poly, and LiFePO4
- External resistor programmable operation
- VSET to set battery regulation voltage:
- Li-Ion: 4.05 V, 4.1 V, 4.2 V, 4.35 V, 4.4 V
- LiFePO4: 3.5 V, 3.6 V, 3.7 V
- ISET to set charge current from 10 mA to 800 mA
- VSET to set battery regulation voltage:
- 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
- TS pin for charging function control
- Open-drain output for status and fault indication
- Open-drain output for power good indication
- Integrated fault protection
- 6.6-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 pins short/open protection
The BQ25170 is an integrated 800-mA linear charger for 1-cell Li-Ion, Li-Polymer, and LiFePO4 batteries targeted at space-limited portable 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.
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 and voltage regulation loops, charge status display, and automatic charge termination. The charge voltage and fast charge current are programmable through external resistors. The precharge and termination current threshold track the fast charge current setting.
관심 가지실만한 유사 제품
비교 대상 장치와 동일한 기능을 지원하는 핀 대 핀
다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능
기술 자료
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | BQ25170: 800-mA Linear Battery Charger for 1-Cell Li-Ion, and LiFePO4 datasheet (Rev. A) | PDF | HTML | 2021/04/14 |
| Application note | LiFePO4 Design Considerations | PDF | HTML | 2023/07/26 | |
| Functional safety information | BQ25170 Pin FMA | PDF | HTML | 2022/05/24 | |
| Application note | BQ25171-Q1 Quick Start Guide | PDF | HTML | 2021/09/29 | |
| EVM User's guide | BQ25170EVM Evaluation Module (Rev. A) | 2021/06/10 | ||
| Certificate | BQ25170EVM EU Declaration of Conformity (DoC) | 2020/08/13 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
BQ25170EVM — 800mA 선형 배터리 충전기, 단일 셀 리튬 이온, 리튬 폴리머 및 LiFePO4용 BQ25170 평가 모듈
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| WSON (DSG) | 8 | Ultra Librarian |
주문 및 품질
- RoHS
- REACH
- 디바이스 마킹
- 납 마감/볼 재질
- MSL 등급/피크 리플로우
- MTBF/FIT 예측
- 물질 성분
- 인증 요약
- 지속적인 신뢰성 모니터링
- 팹 위치
- 조립 위치
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.