BQ25708
- Charge 1- to 4-Cell Battery From Wide Range of Input Sources
- 3.5-V to 24-V Input Operating Voltage
- Supports USB2.0, USB 3.0, USB 3.1 (Type C), and USB_PD Input Current Settings
- Seamless Transition Between Buck and Boost Operation
- Input current and Voltage Regulation (IDPM and VDPM) Against Source Overload
- Power/Current Monitor for CPU
Throttling
- Comprehensive PROCHOT Profile, IMVP8 Compliant
- Input and Battery Current Monitor
- System Power Monitor, IMVP8 Compliant
- Narrow-VDC (NVDC) Power Path
Management
- Instant-On With No Battery or Deeply Discharged Battery
- Battery Supplements System When Adapter is Fully-Loaded
- Ideal Diode Operation in Supplement Mode
- 800-kHz or 1.2-MHz Programmable Switching Frequency for 1-µH to 3.3-µH Inductor
- Host Control Interface for Flexible System
Configuration
- SMBus Port for Optimal System Performance and Status Reporting
- Hardware Pin to Set Input Current Limit Without EC Control
- Integrated ADC to Monitor Voltage, Current and Power
- High
Accuracy Regulation and Monitor
- ±0.5% Charge Voltage Regulation
- ±2% Input/Charge Current Regulation
- ±2% Input/Charge Current Monitor
- ±5% Power Monitor
- Safety
- Thermal Shutdown
- Input, System, Battery Overvoltage Protection
- MOSFET Inductor Overcurrent Protection
- Low Battery Quiescent Current
- Input Current Optimizer (ICO) to Extract Max Input Power
- Charge any Battery Chemistry: Li+, LiFePO4, NiCd, NiMH, Lead Acid
- Package: 32-Pin 4 × 4 WQFN
The bq25708 is a synchronous NVDC battery buck-boost charge controller, offering low component count, high efficiency solution for space-constraint, multi-chemistry battery charging applications.
The NVDC-1 configuration allows the system to be regulated at battery voltage, but not drop below system minimum voltage. The system keeps operating even when the battery is completely discharged or removed. When load power exceeds input source rating, the battery goes into supplement mode and prevents the system from crashing.
The bq25708 charges battery from a wide range of input sources including USB adapter, high voltage USB PD sources and traditional adapters.
During power up, the charger sets converter to buck, boost or buck-boost configuration based on input source and battery conditions. The charger automatically transits among buck, boost and buck-boost configuration without host control.
The bq25708 monitors adapter current, battery current and system power. The flexibly programmed PROCHOT output goes directly to CPU for throttle back when needed.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | bq25708 SMBus Multi-Chemistry Battery Buck-Boost Charge Controller With System Power Monitor and Processor Hot Monitor datasheet | PDF | HTML | 2017. 11. 14 | |
| 애플리케이션 노트 | Layout Guide for Buck-Boost Charger BQ257XX Series | PDF | HTML | 2024. 1. 30 | ||
| 애플리케이션 노트 | Autonomous Smart Battery Guide | PDF | HTML | 2021. 10. 15 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
BQSTUDIO — bqStudio(Battery Management Studio) 소프트웨어
bqStudio(Battery Management Studio)는 TI 배터리 관리 제품의 평가, 설계, 구성, 테스트 또는 기타 활용 프로세스를 지원하는 견고한 종합 툴을 제공합니다. 여기에는 실시간 감시, 그래프 및 로깅 지원, 명령 전송을 위한 간편한 인터페이스, 직접 저수준 통신 및 I/O, 구성, 보정, 학습 주기 수행, 장치를 생산 단계로 가져가기 위한 유용한 파일 생성 등 레지스터 및 데이터 메모리에 대한 전체 액세스를 제공하는 기능은 물론, 자동화된 가이드 지원도 포함됩니다.
bq20xxx 및 bq30xxx와 같은 (...)
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| WQFN (RSN) | 32 | Ultra Librarian |