BQ24020
- Small 3 mm × 3 mm MLP Package
- Charges and powers Systems from Either AC Adapter or USB With Autonomous power-Source Selection
- Integrated USB Control With Selectable 100 mA and 500 mA Charge Rates
- Ideal for Low-Dropout Charger Designs for Single-Cell Li-Ion or Li-pol Packs in Space Limited portable applications
- Integrated power FET and Current Sensor for Up to 1-A Charge applications From AC Adapter
- Precharge Conditioning With Safety Timer
- power Good (AC Adapter Present) Status Output
- Optional Battery Temperature Monitoring Before and During Charge
- Automatic Sleep Mode for Low-power Consumption
- APPLICATIONS
- PDAs, MP3 Players
- Digital Cameras
- Internet appliances
- Smartphones
bqTINY is a trademark of Texas Instruments.
The bqTINY-II series are highly-integrated, flexible Li-Ion linear charge and system power management devices for space-limited charger applications. In a single monolithic device, the bqTINY-II offers integrated USB-port and ac-adapter supply management with autonomous power-source selection, power-FET and current-sensor interfaces, high-accuracy current and voltage regulation, charge status, and charge termination.
The bqTINY-II automatically selects the USB-port or the ac-adapter as the power source for the system. In the USB configuration, the host can select from two preset charge rates of 100 mA or 500 mA. In the ac-adapter configuration, an external resistor sets the system or charge current.
The bqTINY-II charges the battery in three phases: conditioning, constant current, and constant voltage. Charge is terminated based on minimum current. An internal charge timer provides a backup safety for charge termination. The bqTINY-II automatically restarts the charge if the battery voltage falls below an internal threshold. The bqTINY-II automatically enters sleep mode when both supplies are removed.
Different versions of the bqTINY-II offer many additional features. These include a temperature-sensor input for detecting hot or cold battery packs, a power-good output (PG) indicating the presence of input power, a TTL-level charge-enable input (CE) used to disable or enable the charge process, and a TTL-level timer and taper-detect enable input (TTE) used to disable or enable the fast-charge timer and charge termination.
기술 문서
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | Single-Chip Li-Ion & Li-Pol Charger IC w/Autonomous USB-Port & AC Adapt datasheet (Rev. E) | 2007/11/21 | |
| Application note | QFN and SON PCB Attachment (Rev. C) | PDF | HTML | 2023/12/06 | |
| Analog Design Journal | Designing a linear Li-Ion battery charger with power-path control | 2009/05/01 | ||
| Analog Design Journal | Q2 2009 Issue Analog Applications Journal | 2009/05/01 |
설계 및 개발
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BQ24020EVM — bq24020 bqTINY-II 평가 모듈
The bq24020EVM is an evaluation tool for the bq24020 linear single-cell Li-Ion charger with autonomous USB and AC adapter power management in 3x3mm2 QFN package. The EVM is a complete designed-and-tested charger circuit that allows the user to test all functions of the bq24020 and to charge a (...)
TEMPSENSE-SW — 온도 감지 디자이너 소프트웨어
| 패키지 | 핀 | 다운로드 |
|---|---|---|
| VSON (DRC) | 10 | 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