BQ25619
- Single chip solution to charge wearable accessories from adapter or battery
- High-efficiency, 1.5-MHz, synchronous switch-mode buck charger
- 95.5% charge efficiency at 0.5 A and 94.5% efficiency at 1 A
- ±0.5% charge voltage regulation (10-mV step)
- I2C programmable JEITA profile of charge voltage, current and temperature thresholds
- Low termination current with high accuracy 20 mA±10 mA
- Small inductor form factor of 2.5 x 2.0 x 1.0 mm3
- Boost mode with output from 4.6 V to 5.15 V
- 94% boost efficiency at 1-A output
- Integrated control to switch between Charge and Boost mode
- PMID_GOOD pin control external PMOS FET for protection against fault conditions
- Single input supporting USB input, high-voltage adapter, or wireless power
- Support 4-V to 13.5-V input voltage range with 22-V absolute max input rating
- Programmable input current limit (IINDPM) with I2C (100 mA to 3.2 A, 100-mA/step)
- Maximum power tracking by input voltage limit (VINDPM) up to 5.4 V
- VINDPM threshold automatically tracks battery voltage
- Narrow VDC (NVDC) power path management
- System instant-on with no battery or deeply discharged battery
- Flexible I2C configuration and autonomous charging for optimal system performance
- High integration includes all MOSFETs, current sensing and loop compensation
- Low RDSON 19.5-mΩ BATFET to minimize charging loss and extend battery run time
- BATFET control for Ship mode, and full system reset with and without adapter
- 7-µA low battery leakage current in Ship mode
- 9.5-µA low battery leakage current with system standby
- High accuracy battery charging profile
- ±6% charge current regulation
- ±7.5% input current regulation
- Remote battery sensing to charge faster
- Programmable top-off timer for full battery charging
- Safety Related Certifications:
- IEC 62368-1 CB Certification
The BQ25618/619 integrates charge, boost converter and voltage protection in a single device. It offers the industry’s lowest termination current for switching chargers to charge wearable devices by full battery capacity. The BQ25618/619 best-in-class low quiescent current reduces battery leakage down to 6 uA in Ship mode, which conserves battery energy to double the shelf life for the device. BQ25619 is in 4x4 QFN package for easy layout. BQ25618 is in 2.0x2.4mm2 WCSP package for space limited design.
기술 문서
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모두 보기8 | 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | BQ25618/619 I2C Controlled 1-Cell 1.5-A Battery Charger with 20-mA Termination and 1-A Boost Operation datasheet (Rev. D) | PDF | HTML | 2021/12/23 |
| Application note | High-Efficiency Charging for TWS Using a 2-Pin Interface Application Report (Rev. A) | PDF | HTML | 2023/05/16 | |
| Application note | Selection of Single-Cell Buck Narrow VDC Switching Battery Chargers | PDF | HTML | 2022/11/10 | |
| User guide | BQ25611D, BQ25619 (BMS025) Evaluation Module User's Guide (Rev. C) | PDF | HTML | 2022/07/01 | |
| Technical article | Benefits of rechargeable batteries in real-time location system trackers | PDF | HTML | 2020/08/10 | |
| Technical article | Overcoming common design challenges in an UV sterilization box system | PDF | HTML | 2020/07/27 | |
| Application brief | How to Design Tiny, Long-Lasting, and Safe Battery Products With Switching Charg | 2019/08/29 | ||
| Technical article | Overcoming design challenges for low quiescent current in small, battery-powered d | PDF | HTML | 2019/08/29 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
평가 보드
BQ25619EVM — 전원 경로 및 1.2A 부스트 작동을 지원하는 I2C 제어 단일 셀, 3A 벅 배터리 충전기 평가 모듈
The BQ25619 evaluation module (EVM) is used to evaluate the BQ25619 device. This is a 3-A single-cell battery charger optimized for power bank applications in low-power portable designs. The OTG reverse synchronous boost operation and forward buck mode operation allows for control over power (...)
드라이버 또는 라이브러리
BQ256XXSW-LINUX — BQ256XX용 리눅스 드라이버
The Linux driver supports the BQ256XX family of I2C Controlled, 1-cell, switch-mode battery charge management and system power path management ICs. The Linux driver supports communication through the I2C bus and interfaces with the power supply sub-system.
Linux mainline status
Available in Linux (...)
| 패키지 | 핀 | 다운로드 |
|---|---|---|
| WQFN (RTW) | 24 | 옵션 보기 |
주문 및 품질
포함된 정보:
- RoHS
- REACH
- 디바이스 마킹
- 납 마감/볼 재질
- MSL 등급/피크 리플로우
- MTBF/FIT 예측
- 물질 성분
- 인증 요약
- 지속적인 신뢰성 모니터링
포함된 정보:
- 팹 위치
- 조립 위치
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.