제품 상세 정보

Number of series cells (min) 5 Number of series cells (max) 10 Features Cell balancing, FET drive, I2C support, Integrated ADC, LDO output, Multi-cell support, Overvoltage protection, Separate MCU requirement, Temperature sensing, Undervoltage protection Operating current (typ) (µA) 450 Rating Catalog Vin (max) (V) 50 Operating temperature range (°C) -40 to 100 Battery overvoltage protection (min) (V) 4.15 Battery overvoltage protection (max) (V) 4.5
Number of series cells (min) 5 Number of series cells (max) 10 Features Cell balancing, FET drive, I2C support, Integrated ADC, LDO output, Multi-cell support, Overvoltage protection, Separate MCU requirement, Temperature sensing, Undervoltage protection Operating current (typ) (µA) 450 Rating Catalog Vin (max) (V) 50 Operating temperature range (°C) -40 to 100 Battery overvoltage protection (min) (V) 4.15 Battery overvoltage protection (max) (V) 4.5
SSOP (DL) 48 164.358 mm² 15.88 x 10.35
  • 5, 6, 7, 8, 9, or 10 Series-Cell Primary Protection
  • PMOS FET Drive for Charge and Discharge FETs
  • Capable of Operation with 1-m Sense Resistor
  • Supply Voltage Range from 7 V to 50 V
  • Low Supply Current of 450 µA Typical
  • Integrated 5 V 25-mA LDO
  • Integrated 3.3 V 25-mA LDO
  • Stand-Alone Mode
    • Pack Protection Control and Recovery
    • Individual Cell Monitoring
    • Integrated Cell Balancing
    • Programmable Threshold and Delay Time for OvervoltageUndervoltage Overcurrent in Discharge Short Circuit in Discharge
    • Fixed Overtemperature Protection
  • Host Control Mode
    • I2C Interface to Host Controller
    • Analog Interface for Host Cell Measurement and System Charge/Discharge Current
    • Host-Controlled Protection Recovery
    • Host-Controlled Cell Balancing
  • APPLICATIONS
    • Cordless Power Tools
    • Power Assisted Bicycle/Scooter
    • Uninterruptible Power Supply (UPS) Systems
    • Medical Equipment
    • Portable Test Equipment

  • 5, 6, 7, 8, 9, or 10 Series-Cell Primary Protection
  • PMOS FET Drive for Charge and Discharge FETs
  • Capable of Operation with 1-m Sense Resistor
  • Supply Voltage Range from 7 V to 50 V
  • Low Supply Current of 450 µA Typical
  • Integrated 5 V 25-mA LDO
  • Integrated 3.3 V 25-mA LDO
  • Stand-Alone Mode
    • Pack Protection Control and Recovery
    • Individual Cell Monitoring
    • Integrated Cell Balancing
    • Programmable Threshold and Delay Time for OvervoltageUndervoltage Overcurrent in Discharge Short Circuit in Discharge
    • Fixed Overtemperature Protection
  • Host Control Mode
    • I2C Interface to Host Controller
    • Analog Interface for Host Cell Measurement and System Charge/Discharge Current
    • Host-Controlled Protection Recovery
    • Host-Controlled Cell Balancing
  • APPLICATIONS
    • Cordless Power Tools
    • Power Assisted Bicycle/Scooter
    • Uninterruptible Power Supply (UPS) Systems
    • Medical Equipment
    • Portable Test Equipment

The bq77PL900 is a five to ten series cell lithium-ion battery pack protector. The integrated I2C communications interface allows the bq77PL900 also to be as an analog front end (AFE) for a Host controller. Two LDOs, one 5 V/25 mA and one 3.3 V/25 mA, are also included and may be used to power a host controller or support circuitry.

The bq77PL900 integrates a voltage translation system to extract battery parameters such as individual cell voltages and charge/discharge current. Variables such as voltage protection thresholds and detection delay times can be programmed by using the internal EEPROM.

The bq77PL900 can act as a stand-alone self-contained battery protection system (stand-alone mode). It can alternatively be combined with a host microcontroller to offer fuel gauge or other battery management capabilities to the host system (host-control mode).

The bq77PL900 provides full safety protection for overvoltage, undervoltage, overcurrent in discharge, and short circuit in discharge conditions. When the EEPROM programmable safety thresholds are reached, the bq77PL900 turns off the FET drive autonomously. No external components are needed to configure the protection features.

The analog front end (AFE) outputs allow a host controller to observe individual cell voltages and charge/discharge currents. The host controller's analog-to-digital converter connects to the bq77PL900 to acquire these values.

Cell balancing can be performed autonomously, or the host controller can activate it individually via a cell bypass path integrated into the bq77PL900. Internal control registers accessible via the I2C interface configure this operation. The maximum balancing bypass current is set via an external series resistor and the internal FET-on resistance (typically 400 ). Optionally, external bypass cell balance FETs can be used for increased current capability.

The bq77PL900 is a five to ten series cell lithium-ion battery pack protector. The integrated I2C communications interface allows the bq77PL900 also to be as an analog front end (AFE) for a Host controller. Two LDOs, one 5 V/25 mA and one 3.3 V/25 mA, are also included and may be used to power a host controller or support circuitry.

The bq77PL900 integrates a voltage translation system to extract battery parameters such as individual cell voltages and charge/discharge current. Variables such as voltage protection thresholds and detection delay times can be programmed by using the internal EEPROM.

The bq77PL900 can act as a stand-alone self-contained battery protection system (stand-alone mode). It can alternatively be combined with a host microcontroller to offer fuel gauge or other battery management capabilities to the host system (host-control mode).

The bq77PL900 provides full safety protection for overvoltage, undervoltage, overcurrent in discharge, and short circuit in discharge conditions. When the EEPROM programmable safety thresholds are reached, the bq77PL900 turns off the FET drive autonomously. No external components are needed to configure the protection features.

The analog front end (AFE) outputs allow a host controller to observe individual cell voltages and charge/discharge currents. The host controller's analog-to-digital converter connects to the bq77PL900 to acquire these values.

Cell balancing can be performed autonomously, or the host controller can activate it individually via a cell bypass path integrated into the bq77PL900. Internal control registers accessible via the I2C interface configure this operation. The maximum balancing bypass current is set via an external series resistor and the internal FET-on resistance (typically 400 ). Optionally, external bypass cell balance FETs can be used for increased current capability.

다운로드 스크립트와 함께 비디오 보기 동영상

관심 가지실만한 유사 제품

open-in-new 대안 비교
다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능
BQ76920 활성 3~5 시리즈 셀 리튬 이온 및 리튬 인산염 배터리 모니터(bq76940 제품군) This product is a 3-s - 5-s monitor with out an integrated ADC.

기술 자료

star =TI에서 선정한 이 제품의 인기 문서
검색된 결과가 없습니다. 검색어를 지우고 다시 시도하십시오.
4개 모두 보기
유형 직함 날짜
* Data sheet 5-10 cell Li-ion Battery protection & AFE datasheet (Rev. B) 2008/12/03
EVM User's guide bq77PL900EVM-001 (Rev. B) 2018/03/06
Analog Design Journal Cell balancing buys extra run time and battery life 2009/03/11
Application note Cell Balancing with the bq77PL900 2008/07/03

설계 및 개발

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

지원 소프트웨어

SLUC103 bq77PL900 EVSW Install v1p0p0

지원되는 제품 및 하드웨어

지원되는 제품 및 하드웨어

제품
배터리 보호기
BQ77PL900 5~10셀 리튬 이온 배터리 보호 및 AFE
패키지 CAD 기호, 풋프린트 및 3D 모델
SSOP (DL) 48 Ultra Librarian

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

권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.

지원 및 교육

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