BQ24735
- Adapter and Battery Provide Power to System
Together to Support Intel® CPU Turbo Boost
Mode - SMBus Host-Controlled NMOS-NMOS
Synchronous Buck Converter With Programmable
615-, 750-, and 885-kHz Switching Frequencies - Automatic N-Channel MOSFET Selection of
System Power Source From Adapter or Battery
Driven by Internal Charge Pumps - Enhanced Safety Features for Overvoltage
Protection, Overcurrent Protection, Battery,
Inductor and MOSFET Short-Circuit Protection - Programmable Input Current, Charge Voltage,
Charge Current Limits- ±0.5% Charge Voltage Accuracy up to 19.2 V
- ±3% Charge Current Accuracy up to 8.128 A
- ±3% Input Current Accuracy up to 8.064 A
- ±2% 20× Adapter Current or Charge Current
Amplifier Output Accuracy
- Programmable Battery Depletion Threshold, and
Battery LEARN Function - Programmable Adapter Detection and Indicator
- Integrated Loop Compensation and Soft Start
- Real-Time System Control on ILIM Pin to Limit
Charge Current - AC Adapter Operating Range: 4.5 V to 24 V
- 5-µA Off-State Battery Discharge Current
- 0.65 mA (0.8 mA Max) Adapter Standby
Quiescent Current
The bq24735 device is a high-efficiency, synchronous battery charger, offering low component count for space-constrained, multichemistry battery charging applications. The bq24735 device supports turbo boost by allowing battery discharge energy to the system when system power demand is temporarily higher than the adapter maximum power level so the adapter will not crash.
The bq24735 device uses two charge pumps to separately drive N-channel MOSFETs (ACFET, RBFET, and BATFET) for automatic system power source selection.
SMBus controlled input current, charge current, and charge voltage digital-to-analog converters (DACs) allow for very high-regulation accuracies that can be easily programmed by the system power management microcontroller.
The bq24735 device uses an internal input current register or an external ILIM pin to throttle down PWM modulation to reduce the charge current. The bq24735 device charges 1-, 2-, 3-, or 4-series Li+ cells.
기술 자료
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | bq24735 1- to 4-Cell Li+ Battery SMBus Charge Controller for Supporting Turbo Boost Mode With N-Channel Power MOSFET Selector datasheet (Rev. B) | PDF | HTML | 2015/04/29 |
| Application note | Autonomous Smart Battery Guide | PDF | HTML | 2021/10/15 | |
| Analog Design Journal | 1Q 2012 Issue Analog Applications Journal | 2012/01/31 | ||
| Analog Design Journal | Turbo boost charger supports CPU turbo mode | 2012/01/31 | ||
| User guide | bq24735/725A Battery Charger Evaluation Module (Rev. A) | 2011/08/16 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
BQ24735EVM-710 — BQ24735, 1-4 셀 Li+ 배터리 SMBus 충전 컨트롤러용 평가 모듈
The BQ24735EVM-710 evaluation module (EVM) is a complete charger module for evaluating a multicell synchronous notebook turbo boost charge using the bq24735 devices. It is designed to deliver up to 4 A of charge current to Li-ion or Li-polymer applications. The charge current is programmable by (...)
BQ24735SW-LINUX — BQ24735용 Linux 드라이버
Linux mainline status
Available in Linux Main line: Yes
Available through git.ti.com: N/A
Linux source files
The (...)
SLUC203 — bq24725_725A_726_707_73x Calculation Tool
지원되는 제품 및 하드웨어
제품
배터리 충전기 IC
TIDA-00039 — 1-4 셀 Li+ 배터리 SMBus 충전 컨트롤러 레퍼런스 디자인
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| VQFN (RGR) | 20 | Ultra Librarian |
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
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.