BQ25505
- Ultra
Low-Power With High-Efficiency DC-DC Boost Charger
- Cold-Start Voltage: VIN ≥ 600 mV
- Continuous Energy Harvesting From Input Sources as Low as 100 mV
- Ultra-Low Quiescent Current of 325 nA
- Input Voltage Regulation Prevents Collapsing High-Impedance Input Sources
- Ship Mode With < 5 nA From Battery
- Energy
Storage
- Energy can be Stored to Rechargeable Li-Ion Batteries, Thin-Film Batteries, Super-Capacitors, or Conventional Capacitors
- Battery Charging and Protection
- Internally Set Undervoltage Level
- User-Programmable Overvoltage Level
- Battery-Good Output
Flag
- Programmable Threshold and Hysteresis
- Warn Attached Microcontrollers of Pending Loss of Power
- Can be Used to Enable or Disable System Loads
- Programmable Maximum Power Point
Tracking (MPPT)
- Integrated MPPT for Optimal Energy Extraction From a Variety of Energy Harvesters
- Gate Drivers for Primary
(Nonrechargeable) and Secondary (Rechargeable) Storage Element
Multiplexing
- Autonomous Switching Based on VBAT_OK
- Break-Before-Make Prevents System Rail Droop
The bq25505 device is specifically designed to efficiently extract the microwatts (µW) to miliwatts (mW) of power generated from a variety of DC energy harvesting, high-impedance sources like photovoltaic (solar) or thermal electric generators (TEGs) without collapsing those sources. The battery-management features of the bq25505 ensure that a secondary rechargeable battery is not overcharged by this extracted power, with voltage boosted, nor depleted beyond safe limits by a system load. The integrated multiplexer gate drivers autonomously switch the system load to a primary nonrechargeable battery if the secondary battery voltage falls below the user-defined VBAT_OK threshold.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | bq25505 ultra low-power boost charger with battery management and autonomous power multiplexer for primary battery in energy harvester applications datasheet (Rev. F) | PDF | HTML | 2019. 3. 6 | |
| 기술 문서 | Experience seamless shopping thanks to electronic shelf labels | PDF | HTML | 2018. 10. 10 | ||
| 기술 문서 | How energy harvesting can extend the life of your fault indicator on the grid | PDF | HTML | 2017. 10. 18 | ||
| 백서 | Cities grow smarter through innovative semiconductor technologies | 2017. 7. 7 | |||
| 사용 설명서 | User's Guide for bq25505 Battery Charger Evaluation Module for Energy Harvesting (Rev. A) | 2014. 8. 23 | |||
| Product overview | Battery Management Solutions for Wearable and Fitness Devices (Rev. C) | 2014. 8. 18 | |||
| 아날로그 디자인 학술지 | Accurately measuring efficiency of ultralow-IQ devices | 2014. 1. 22 | |||
| Product overview | Industry’s Most Efficient Nano Power Harvesting Solutions (Rev. A) | 2013. 11. 8 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
SLUC463 — Solar App Design Example V1.3, bq25505
SLUC484 — bq25505/70 Design Help V1.3
TIDA-00100 — Bluetooth 저에너지(BLE) 비컨 서브시스템용 실내 에너지 수집 레퍼런스 디자인
The Indoor Light Energy Harvesting Reference Design for Bluetooth Low Energy (BLE) Beacon Subsystem provides a solution where by with just the power of the typical indoor lighting in a retail environment (greater than 250 LUX) the Bluetooth Low Energy chip can broadcast BLE beacons.
This subsystem (...)
TIDA-00488 — Sub-1GHz 네트워크를 위한 에너지 하베스팅 주변광 및 환경 센서 노드 레퍼런스 디자인
TIDA-00488 demonstrates an ultra-low power and a renewable method of wireless environmental sensing using daylight energy harvesting with a long backup battery life. This reference design uses our ultra-low power harvester power management SimpleLink™ ultra-low power sub-1 GHz wireless (...)
TIDA-00998 — 오버헤드 고장 표시기용 에너지 하베스팅 및 고장 표시기 서브시스템 레퍼런스 디자인
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| VQFN (RGR) | 20 | Ultra Librarian |
주문 및 품질
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.