BQ24401
- Safe Management of Fast Charge for NiCd and NiMH Battery Packs
- High-Frequency Switching Controller for Efficient and Simple Charger Design
- Pre-Charge Qualification for Detecting Shorted, Damaged, or Overheated Cells
- Fast-Charge Termination by ΔT/Δt, Maximum Temperature, and Maximum Charge Time
- Selectable Top-Off Mode for Achieving Maximum Capacity in NiMH Batteries
- Programmable Trickle-Charge Mode for Reviving Deeply Discharged Batteries and for Postcharge Maintenance
- Built-in Battery Removal and Insertion Detection
- Sleep Mode for Low Power Consumption
- APPLICATIONS
- Nickel Charger
- High-Power, Multi-Cell Charger
The bq24401 is a programmable, monolithic IC for fast-charge management of nickel cadmium (NiCd) and nickel metal-hydride (NiMH) in single or multi-cell applications.
The bq24401 provides these charge termination criteria:
- Rate of temperature rise (ΔT/Δt)
- Maximum temperature
- Maximum charge time
For safety, the bq24401 inhibits fast charge until the battery voltage and temperature are within user-defined limits. If the battery voltage is below the low-voltage threshold, the bq24401 uses trickle-charge to condition the battery. For NiMH batteries, the bq24401 provides an optional top-off charge to maximize the battery capacity.
The integrated high-speed comparator allows the bq24401 to be the basis for a complete, high-efficiency battery charger circuit for nickel-based chemistries.
기술 문서
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | Programmable NiCd/NiMH Fast-Charge Management IC datasheet (Rev. A) | 2010/03/08 | |
| Application note | U-504 Using the bq2000/T to Control Fast Charge (Rev. B) | 2004/12/02 |
설계 및 개발
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| 패키지 | 핀 | 다운로드 |
|---|---|---|
| SOIC (D) | 8 | 옵션 보기 |
| TSSOP (PW) | 8 | 옵션 보기 |
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