BQ25070
- Single Cell LiFePO4 Charging Algorithm
- 30V Input Rating, With 10.5V Over-Voltage Protection (OVP)
- 50mA Integrated Low Dropout Linear Regulator (LDO)
- Programmable Charge Current Through Single Input Interface (CTRL)
- 7% Charge Current Regulation Accuracy
- Thermal Regulation and Protection
- Soft-Start Feature to Reduce Inrush Current
- Battery NTC Monitoring
- Charging Status Indication
- Available in Small 2mm × 3mm 10 Pin SON Package
- APPLICATIONS
- Smart Phones
- Mobile Phones
- Portable Media Players
- Low Power Handheld Devices
The bq25070 is a highly integrated LiFePO4 linear battery charger targeted at space-limited portable applications. It operates from either a USB port or AC Adapter and charges a single-cell LiFePO4 battery with up to 1A of charge current. The 30V input voltage range with input over-voltage protections supports low-cost unregulated adapters.
The bq25070 has a single power output that charges the battery and powers the system. The charge current is programmable up to 1A using the CTRL input. Additionally, a 4.9V ±10% 50mA LDO is integrated into the IC for supplying low power external circuitry.
The LiFePO4 charging algorithm removes the constant voltage mode control usually present in Li-Ion battery charge cycles. Instead, the battery is fastcharged to the overcharge voltage and then allowed to relax to a lower float charge voltage threshold. The removal of the constant voltage control reduces charge time significantly. During the charge cycle, an internal control loop monitors the IC junction temperature and reduces the charge current if an internal temperature threshold 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, and charge status display.
기술 자료
유형 | 직함 | 날짜 | ||
---|---|---|---|---|
* | Data sheet | 1A, Single-Input, Single-Cell LiFePO4, Linear Battery Charger w/ 50mA LDO datasheet | 2011/07/05 | |
User guide | 1A, Single Cell LiFePO4 Linear Battery Charger with 4.9V, 50mA LDO | 2011/05/29 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
BQ25070EVM-740 — LiFePO4 애플리케이션용 BQ25070 1A, 싱글 셀, 선형 충전기용 평가 모듈
This user’s guide describes the bq25070EVM-740 evaluation module (EVM), how to perform a stand-alone evaluation or interface with a host or system. The converter is designed to deliver up to 1 A of continuous current to the battery and/or system. The device has a 4.9 VDC, 50 mA max internal (...)
TIDA-00053 — LiFePO4 애플리케이션용 1A 단일 셀 선형 충전기 레퍼런스 디자인
패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
---|---|---|
WSON (DQC) | 10 | 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.