BQ25895M
- High efficiency 1.5-MHz switch mode buck charge
- 93% charge efficiency at 2 A and 91% charge efficiency at 3 A charge current
- Optimize for high voltage input (9 V / 12 V)
- Low power PFM mode for light load operations
- Boost mode operation with adjustable
output from 4.5 V to 5.5 V
- Selectable 500-KHz / 1.5-MHz boost converter with up-to 3.1 A output
- 93% Boost efficiency at 5 V at 1 A output
- Support down-to 2.5V battery
- Support PWM only or PFM/PWM control for light load efficiency
- Integrated control to switch between charge and boost mode
- Single input to support USB input and adjustable high voltage adapters
- Support 3.9-V to 14-V input voltage range
- Input current limit (100 mA to 3.25 A with 50-mA resolution) to support USB2.0, USB3.0 standard and high voltage adapters
- Maximum power tracking by input voltage limit up-to 14V for wide range of adapters
- Auto detect USB SDP, CDP, DCP, and non-standard adapters
- Input current optimizer (ICO) to maximize input power without overloading adapters
- Resistance compensation (IRCOMP) from charger output to cell terminal
- Highest battery discharge efficiency with 11-mΩ battery discharge MOSFET up to 9 A
- Integrated ADC for system monitor (voltage, temperature, charge current)
- BATFET Control to support ship mode, wake up, and full system reset
- Flexible autonomous and I2C mode for optimal system performance
- High integration includes all MOSFETs, current sensing and loop compensation
- 12-µA Low battery leakage current to support ship mode
- High accuracy
- ±0.5% Charge voltage regulation
- ±5% Charge current regulation
- ±7.5% Input current regulation
- Safety
- Battery temperature sensing for charge and boost mode
- Thermal regulation and thermal shutdown
The BQ25895M is a highly-integrated 5-A switch-mode battery charge management and system power path management device for single cell Li-Ion and Li-polymer battery. The devices support high input voltage fast charging. The low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharging phase. The I2C Serial interface with charging and system settings makes the device a truly flexible solution.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | BQ25895M I2C Controlled Single Cell Fast Charger with MaxChargeTM Technology for High Input Voltage and Adjustable Voltage 3.1 A Boost Operation datasheet (Rev. C) | PDF | HTML | 2022. 10. 17 | |
| 애플리케이션 노트 | Extracting Maximum Power from an Adapter with Input Current Optimization Feature (Rev. C) | 2019. 8. 2 | |||
| 애플리케이션 노트 | Dynamic Power-Path Mgmt & Dynamic Power Mgmt (Rev. A) | 2018. 5. 1 | |||
| 애플리케이션 노트 | Battery Charger Overload Protection in Boost Mode Operation | 2017. 7. 12 | |||
| 애플리케이션 노트 | Port Detection for Power Banks | 2016. 4. 8 | |||
| 애플리케이션 노트 | Using the bq2589x ADC to Estimate Battery Temperature | 2015. 5. 4 | |||
| 아날로그 디자인 학술지 | Extract maximum power from the supply when charging a battery | 2014. 4. 11 | |||
| 아날로그 디자인 학술지 | Dynamic power management for faster, more efficient battery charging | 2013. 10. 28 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
BQ25895MEVM-664 — bq25895M 완전한 충전기 평가 모듈
bq25895M 평가 모듈(EVM)은 다양한 스마트폰과 태블릿 애플리케이션에서 1셀 리튬 이온 및 리튬 폴리머 배터리를 위해 고도로 통합된 스위치 모드 배터리 충전 관리 및 시스템 전원 경로 관리 장치를 평가하기 위한 완벽한 충전기 모듈입니다.
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| WQFN (RTW) | 24 | Ultra Librarian |
주문 및 품질
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.