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

BQ24704

활성

낮은 입력 전원 감지 및 저 IQ를 지원하는 호스트 제어형 멀티 케미스트리 배터리 충전기

지금 주문
데이터 시트

BQ24704

활성
데이터 시트 지금 주문

제품 상세 정보

Number of series cells 2, 3, 4 Charge current (max) (A) 10 Vin (max) (V) 24 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 8 Battery charge voltage (max) (V) 18 Absolute max Vin (max) (V) 30 Control topology Switch-Mode Buck Control interface Standalone (RC-Settable) Features Power Path Vin (min) (V) 8 Rating Catalog Operating temperature range (°C) -40 to 125
Number of series cells 2, 3, 4 Charge current (max) (A) 10 Vin (max) (V) 24 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 8 Battery charge voltage (max) (V) 18 Absolute max Vin (max) (V) 30 Control topology Switch-Mode Buck Control interface Standalone (RC-Settable) Features Power Path Vin (min) (V) 8 Rating Catalog Operating temperature range (°C) -40 to 125
VQFN (RGE) 24 16 mm² 4 x 4
  • NMOS-NMOS Synchronous Buck Converter with 300 kHz Frequency and >95% Efficiency
  • 30-ns Minimum Driver Dead-time and 99.5% Maximum Effective Duty Cycle
  • High-Accuracy Voltage and Current Regulation
    • ±0.5% Charge Voltage Accuracy
    • ±3% Charge Current Accuracy
    • ±3% Adapter Current Accuracy
    • ±2% Input Current Sense Amp Accuracy
  • Integration
    • Internal Loop Compensation
    • Internal Soft-Start
  • Safety
    • Dynamic Power Management (DPM) with Status Indicator
    • Charger Overcurrent Protection
    • Battery Overvoltage Protection
    • Thermal Shutdown
  • Supports Two, Three, or Four Li+ Cells
  • 8 — 24 V AC/DC-Adapter Operating Range
  • Analog Inputs with Ratiometric Programming via Resistors or DAC/GPIO Host Control
    • Charge Voltage (4-4.512 V/cell)
    • Charge Current (up to 8 A, with 10-m Sense Resistor)
    • Adapter Current Limit (DPM)
  • Status and Monitoring Outputs
    • AC/DC Adapter Present with Programmable Voltage Threshold
    • DPM Loop Active (DPMDET)
    • Current Drawn from Input Source
  • Charge Enable
  • 24-pin, 4x4-mm QFN Package
  • Energy Star Low Iq
    • < 10 µA Off-state Discharge Current
    • < 1.5 mA Off-state Input Quiescent Current
  • APPLICATIONS
    • Notebook and Netbook Computers
    • Portable Data-Capture Terminals
    • Portable Printers
    • Medical Diagnostics Equipment
    • Battery Bay Chargers
    • Battery Back-Up Systems

PowerPad is a trademark of Texas Instruments.
  • NMOS-NMOS Synchronous Buck Converter with 300 kHz Frequency and >95% Efficiency
  • 30-ns Minimum Driver Dead-time and 99.5% Maximum Effective Duty Cycle
  • High-Accuracy Voltage and Current Regulation
    • ±0.5% Charge Voltage Accuracy
    • ±3% Charge Current Accuracy
    • ±3% Adapter Current Accuracy
    • ±2% Input Current Sense Amp Accuracy
  • Integration
    • Internal Loop Compensation
    • Internal Soft-Start
  • Safety
    • Dynamic Power Management (DPM) with Status Indicator
    • Charger Overcurrent Protection
    • Battery Overvoltage Protection
    • Thermal Shutdown
  • Supports Two, Three, or Four Li+ Cells
  • 8 — 24 V AC/DC-Adapter Operating Range
  • Analog Inputs with Ratiometric Programming via Resistors or DAC/GPIO Host Control
    • Charge Voltage (4-4.512 V/cell)
    • Charge Current (up to 8 A, with 10-m Sense Resistor)
    • Adapter Current Limit (DPM)
  • Status and Monitoring Outputs
    • AC/DC Adapter Present with Programmable Voltage Threshold
    • DPM Loop Active (DPMDET)
    • Current Drawn from Input Source
  • Charge Enable
  • 24-pin, 4x4-mm QFN Package
  • Energy Star Low Iq
    • < 10 µA Off-state Discharge Current
    • < 1.5 mA Off-state Input Quiescent Current
  • APPLICATIONS
    • Notebook and Netbook Computers
    • Portable Data-Capture Terminals
    • Portable Printers
    • Medical Diagnostics Equipment
    • Battery Bay Chargers
    • Battery Back-Up Systems

PowerPad is a trademark of Texas Instruments.

The bq24704 is a high-efficiency, synchronous battery charger with integrated compensation offering low component count for space-limited Li-Ion and Li-Polymer battery charging applications. Charge current and voltage programming allows high regulation accuracies, and can be either hardwired with resistors, or programmed by the system power-management microcontroller using a DAC or GPIOs.

The bq24704 charges two, three, or four series Li+ cells, supporting up to 8 A of charge current, and is available in a 24-pin, 4x4-mm thin QFN package.

The bq24704 features Dynamic Power Management (DPM) and input power limiting. These features reduce battery charge current when the input power limit is reached to avoid overloading the AC adapter when supplying the load and the battery charger simultaneously. A highly-accurate current-sense amplifier enables precise measurement of input current from the AC adapter to monitor the overall system power.

The bq24704 is a high-efficiency, synchronous battery charger with integrated compensation offering low component count for space-limited Li-Ion and Li-Polymer battery charging applications. Charge current and voltage programming allows high regulation accuracies, and can be either hardwired with resistors, or programmed by the system power-management microcontroller using a DAC or GPIOs.

The bq24704 charges two, three, or four series Li+ cells, supporting up to 8 A of charge current, and is available in a 24-pin, 4x4-mm thin QFN package.

The bq24704 features Dynamic Power Management (DPM) and input power limiting. These features reduce battery charge current when the input power limit is reached to avoid overloading the AC adapter when supplying the load and the battery charger simultaneously. A highly-accurate current-sense amplifier enables precise measurement of input current from the AC adapter to monitor the overall system power.
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기술 자료

star =TI에서 선정한 이 제품의 인기 문서
검색된 결과가 없습니다. 검색어를 지우고 다시 시도하십시오.
3개 모두 보기
유형 직함 날짜
* Data sheet Host-Controlled Multi-Chemistry Battery Charger With Low Input Power Detect.. datasheet 2009/05/18
Analog Design Journal Q4 2009 Issue Analog Applications Journal 2018/09/24
Application note How to Review a Multicell Switching Charger Schematic 2011/09/21

설계 및 개발

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패키지 핀 CAD 기호, 풋프린트 및 3D 모델
VQFN (RGE) 24 Ultra Librarian
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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

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포럼 주제 모두 보기(영문)

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