홈 배터리 관리 IC 배터리 충전기 IC
홈
배터리 관리 IC
배터리 충전기 IC

LP3947

마지막 구매

USB/AC 어댑터, 싱글 셀 리튬 이온 배터리 충전기 IC

지금 주문
데이터시트

LP3947

마지막 구매
데이터시트 지금 주문

제품 상세 정보

Number of series cells 1 Charge current (max) (A) 0.75 Vin (max) (V) 6 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 4.2 Battery charge voltage (max) (V) 4.2 Absolute max Vin (max) (V) 6.5 Control topology Linear Control interface I2C Features BAT temp thermistor monitoring (hot/cold profile) Vin (min) (V) 4.3 Rating Catalog Operating temperature range (°C) -40 to 85
Number of series cells 1 Charge current (max) (A) 0.75 Vin (max) (V) 6 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 4.2 Battery charge voltage (max) (V) 4.2 Absolute max Vin (max) (V) 6.5 Control topology Linear Control interface I2C Features BAT temp thermistor monitoring (hot/cold profile) Vin (min) (V) 4.3 Rating Catalog Operating temperature range (°C) -40 to 85
WSON (NHL) 14 16 mm² 4 x 4
  • Supports USB Charging Scheme
  • Integrated Pass Transistor
  • Near-Depleted Battery Preconditioning
  • Monitors Battery Temperature
  • Built-In 5.6 Hour Timer
  • Under Voltage and Over Voltage Lockout
  • Charge Status Indicators
  • Charge Current Monitor Analog Output
  • LDO Mode Operation can source 1 Amp
  • Continuous Over Current/Temperature Protection

Key Specifications

  • 1% Charger Voltage Accuracy Over
    0°C ≤ TJ ≤ 85°C
  • 4.3V to 6V Input Voltage Range
  • 100 mA to 750 mA Charge Current Range, in Charger Mode
  • 100 mA to 500 mA Charge Current Range, in USB Mode
  • WSON Package Power Dissipation:
    2.7W at TA = 25°C

All trademarks are the property of their respective owners.

  • Supports USB Charging Scheme
  • Integrated Pass Transistor
  • Near-Depleted Battery Preconditioning
  • Monitors Battery Temperature
  • Built-In 5.6 Hour Timer
  • Under Voltage and Over Voltage Lockout
  • Charge Status Indicators
  • Charge Current Monitor Analog Output
  • LDO Mode Operation can source 1 Amp
  • Continuous Over Current/Temperature Protection

Key Specifications

  • 1% Charger Voltage Accuracy Over
    0°C ≤ TJ ≤ 85°C
  • 4.3V to 6V Input Voltage Range
  • 100 mA to 750 mA Charge Current Range, in Charger Mode
  • 100 mA to 500 mA Charge Current Range, in USB Mode
  • WSON Package Power Dissipation:
    2.7W at TA = 25°C

All trademarks are the property of their respective owners.

The LP3947 is a complete charge management system that safely charges and maintains a Li-Ion battery from either USB power source or AC adaptor. In USB mode, the LP3947 supports charging in low power or high power mode. Alternatively, the LP3947 can take charge from AC adaptor. In both USB and AC adaptor modes, charge current, battery regulation voltage, and End of Charge (EOC) point can be selected via I2C interface. The LP3947 can also operate on default values that are pre-programmed in the factory. The battery temperature is monitored continuously at the Ts pin to safeguard against hazardous charging conditions. The charger also has under-voltage and over-voltage protection as well as an internal 5.6 hr timer to protect the battery. The pass transistor and charge current sensing resistor are all integrated inside the LP3947.

The LP3947 operates in four modes: pre-qualification, constant current, constant voltage and maintenance modes. There are two open drain outputs for status indication. An internal amplifier readily converts the charge current into a voltage. Also, the charger can operate in an LDO mode providing a maximum of 1.2 Amp to the load.

The LP3947 is a complete charge management system that safely charges and maintains a Li-Ion battery from either USB power source or AC adaptor. In USB mode, the LP3947 supports charging in low power or high power mode. Alternatively, the LP3947 can take charge from AC adaptor. In both USB and AC adaptor modes, charge current, battery regulation voltage, and End of Charge (EOC) point can be selected via I2C interface. The LP3947 can also operate on default values that are pre-programmed in the factory. The battery temperature is monitored continuously at the Ts pin to safeguard against hazardous charging conditions. The charger also has under-voltage and over-voltage protection as well as an internal 5.6 hr timer to protect the battery. The pass transistor and charge current sensing resistor are all integrated inside the LP3947.

The LP3947 operates in four modes: pre-qualification, constant current, constant voltage and maintenance modes. There are two open drain outputs for status indication. An internal amplifier readily converts the charge current into a voltage. Also, the charger can operate in an LDO mode providing a maximum of 1.2 Amp to the load.
open-in-new 기타 배터리 충전기 IC 찾기
다운로드 스크립트와 함께 비디오 보기 동영상

기술 문서

star =TI에서 선정한 이 제품의 인기 문서
검색된 결과가 없습니다. 검색어를 지우고 다시 시도하십시오.
모두 보기2
유형 직함 날짜
* Data sheet LP3947 USB/AC Adaptor, Single Cell Li-Ion Battery Charger IC datasheet (Rev. B) 2013/04/02
EVM User's guide AN-1341 LP3947 Evaluation Board (Rev. A) 2013/04/30

설계 및 개발

추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.

패키지 핀 다운로드
WSON (NHL) 14 옵션 보기
TI의 평가 항목에 대한 표준 약관이 적용됩니다.

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

지원 및 교육

TI 엔지니어의 기술 지원을 받을 수 있는 TI E2E™ 포럼

포럼 주제 모두 보기(영문)

콘텐츠는 TI 및 커뮤니티 기고자에 의해 "있는 그대로" 제공되며 TI의 사양으로 간주되지 않습니다. 사용 약관을 참조하십시오.

품질, 패키징, TI에서 주문하는 데 대한 질문이 있다면 TI 지원을 방문하세요. ​​​​​​​​​​​​​​

동영상