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BQ77910A

새 설계에 권장하지 않음

리튬 이온 케미스트리용 독립형 4~10셀 정밀 보호

지금 주문
데이터 시트
BQ77910A은(는) 새 설계에 권장하지 않습니다.
이 제품은 기존 고객을 위해 계속 제공됩니다. 새로운 설계는 대체 제품을 고려해야 합니다.
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비교 대상 장치와 유사한 기능
BQ77915 활성 자율 셀 밸런싱을 지원하는 3~5시리즈 적층형 초저전력 기본 보호기 3-5S stackable over voltage protector with cell balancing

BQ77910A

새 설계에 권장하지 않음
데이터 시트 지금 주문

제품 상세 정보

Function Protection Rating Catalog Operating temperature range (°C) -40 to 85
Function Protection Rating Catalog Operating temperature range (°C) -40 to 85
TSSOP (DBT) 38 62.08 mm² 9.7 x 6.4
  • 4-, 5-, 6-, 7-, 8-, 9-, or 10-Series Cell Protection
  • Individual Cell-Voltage Monitoring
  • Low-Side NMOS FET Drive for Charge and Discharge Control
  • Compatible With 1-mΩ Current-Sense Resistor
  • Supply-Voltage Range From 5.6 V to 50 V
  • Integrated 3.3-V Micro-Power LDO Regulator
  • Low Supply Current
    • Normal Mode: 50 µA, Typical
    • Shutdown Mode, LDO OFF: 3 µA, Typical
  • 38-Pin TSSOP Package
  • Internal 50-mA Automatic Cell Balancing
  • 4-, 5-, 6-, 7-, 8-, 9-, or 10-Series Cell Protection
  • Individual Cell-Voltage Monitoring
  • Low-Side NMOS FET Drive for Charge and Discharge Control
  • Compatible With 1-mΩ Current-Sense Resistor
  • Supply-Voltage Range From 5.6 V to 50 V
  • Integrated 3.3-V Micro-Power LDO Regulator
  • Low Supply Current
    • Normal Mode: 50 µA, Typical
    • Shutdown Mode, LDO OFF: 3 µA, Typical
  • 38-Pin TSSOP Package
  • Internal 50-mA Automatic Cell Balancing

The bq77910A is a battery protection and cell balancing device intended for Li-Ion and Li-Polymer battery packs.

The bq77910A monitors 4- to 10-series individual cell voltages and provides fast-acting outputs that may be used to drive N-channel MOSFETs to interrupt the power path. Activation delays and recovery methods for safety conditions are fully programmable in non-volatile memory.

Automatic cell balancing is provided using internal 50-mA cell circuits. A robust balancing algorithm ensures optimum performance by maintaining all cell voltages in balance. Balancing may be configured to operate at all times, only during charge, or can be disabled completely.

WARNING: The bq77910A-series integrated circuit helps system designers greatly enhance the safety of their Li-Ion and Li-Polymer battery packs when integrated effectively and in accordance with the instructions detailed in this document by technically qualified personnel familiar with battery pack application safety. This data sheet must be read in its entirety before working with the bq77910A.

Additional advanced safety features of the bq77910A include the ability to control split power-path MOSFETs, an open-cell sense-line detection mechanism, and the ability to detect an open or shorted external temperature sensor fault condition.

Programmable Protection Functions

  • Wide range of programmable detection thresholds and delay times
  • Configurable for multiple cell types and application requirements:
    • Cell overvoltage
    • Cell undervoltage
    • Pack discharge overcurrent
    • Pack discharge short circuit
    • Pack charge short-circuit current
  • Variable gain (×1 or ×5) current-sense circuit
    • Compatible with a wide range of current-sense resistors (1-mΩ to 5-mΩ typical) sized for application requirements

Fixed Hardware Protection Functions

  • Preset overtemperature protections
  • Open-cell detection
  • Open and shorted thermistor detection
  • Brownout protection quickly shuts off FETs under low-battery conditions to minimize the risk of FET overheating

The bq77910A is a battery protection and cell balancing device intended for Li-Ion and Li-Polymer battery packs.

The bq77910A monitors 4- to 10-series individual cell voltages and provides fast-acting outputs that may be used to drive N-channel MOSFETs to interrupt the power path. Activation delays and recovery methods for safety conditions are fully programmable in non-volatile memory.

Automatic cell balancing is provided using internal 50-mA cell circuits. A robust balancing algorithm ensures optimum performance by maintaining all cell voltages in balance. Balancing may be configured to operate at all times, only during charge, or can be disabled completely.

WARNING: The bq77910A-series integrated circuit helps system designers greatly enhance the safety of their Li-Ion and Li-Polymer battery packs when integrated effectively and in accordance with the instructions detailed in this document by technically qualified personnel familiar with battery pack application safety. This data sheet must be read in its entirety before working with the bq77910A.

Additional advanced safety features of the bq77910A include the ability to control split power-path MOSFETs, an open-cell sense-line detection mechanism, and the ability to detect an open or shorted external temperature sensor fault condition.

Programmable Protection Functions

  • Wide range of programmable detection thresholds and delay times
  • Configurable for multiple cell types and application requirements:
    • Cell overvoltage
    • Cell undervoltage
    • Pack discharge overcurrent
    • Pack discharge short circuit
    • Pack charge short-circuit current
  • Variable gain (×1 or ×5) current-sense circuit
    • Compatible with a wide range of current-sense resistors (1-mΩ to 5-mΩ typical) sized for application requirements

Fixed Hardware Protection Functions

  • Preset overtemperature protections
  • Open-cell detection
  • Open and shorted thermistor detection
  • Brownout protection quickly shuts off FETs under low-battery conditions to minimize the risk of FET overheating
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* Data sheet bq77910A Multi-Cell Lithium-Ion/Polymer Precision Protector datasheet (Rev. A) 2014/09/16

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