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BQ77PL900DLG4

更新时间： 2024-02-04 04:39:42
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德州仪器 - TI 电源电路电池电源管理电路光电二极管
页数 文件大小 规格书
60页 862K
描述
Five to Ten Series Cell Lithium-Ion or Lifthium-Polymer Battery Protector and Analog Front End

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BQ77PL900DLG4 技术参数

是否无铅：不含铅是否Rohs认证：符合
生命周期：Obsolete零件包装代码：SSOP
包装说明：GREEN, PLASTIC, SSOP-48针数：48
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.16
Is Samacsys：N可调阈值：YES
模拟集成电路 - 其他类型：POWER SUPPLY MANAGEMENT CIRCUITJESD-30 代码：R-PDSO-G48
JESD-609代码：e4长度：15.875 mm
湿度敏感等级：2信道数量：10
功能数量：1端子数量：48
最高工作温度：85 °C最低工作温度：-25 °C
封装主体材料：PLASTIC/EPOXY封装代码：SSOP
封装等效代码：SSOP48,.4封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, SHRINK PITCH峰值回流温度（摄氏度）：260
电源：7/50 V认证状态：Not Qualified
座面最大高度：2.79 mm子类别：Power Management Circuits
最大供电电流 (Isup)：0.8 mA最大供电电压 (Vsup)：50 V
最小供电电压 (Vsup)：7 V标称供电电压 (Vsup)：36 V
表面贴装：YES温度等级：OTHER
端子面层：Nickel/Palladium/Gold (Ni/Pd/Au)端子形式：GULL WING
端子节距：0.635 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：7.49 mm
Base Number Matches：1

BQ77PL900DLG4 数据手册

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bq77PL900  
www.ti.com ...................................................................................................................................................... SLUS844B–JUNE 2008–REVISED JANUARY 2009  
Five to Ten Series Cell Lithium-Ion or Lithium-Polymer Battery Protector  
and Analog Front End  
1
FEATURES  
DESCRIPTION  
•
•
•
5, 6, 7, 8, 9, or 10 Series-Cell Primary  
Protection  
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.  
PMOS FET Drive for Charge and Discharge  
FETs  
Capable of Operation with 1-mΩ Sense  
Resistor  
•
•
•
•
•
Supply Voltage Range from 7 V to 50 V  
Low Supply Current of 450 µA Typical  
Integrated 5-V, 25-mA LDO  
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.  
Integrated 3.3-V, 25-mA LDO  
Stand-Alone Mode  
–
–
–
–
Pack Protection Control and Recovery  
Individual Cell Monitoring  
The bq77PL900 can act as  
a
stand-alone  
Integrated Cell Balancing  
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).  
Programmable Threshold and Delay Time  
for  
–
–
–
–
Overvoltage  
Undervoltage  
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.  
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  
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  
bq77PL900 to acquire these values.  
–
–
Host-Controlled Protection Recovery  
Host-Controlled Cell Balancing  
converter  
connects  
to  
the  
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 Ω).  
Optionally, external bypass cell balance FETs can be  
used for increased current capability.  
APPLICATIONS  
•
•
•
•
•
Cordless Power Tools  
Power Assisted Bicycle/Scooter  
Uninterruptible Power Supply (UPS) Systems  
Medical Equipment  
Portable Test Equipment  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2008–2009, Texas Instruments Incorporated  
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BQ77PL900DLG4 替代型号

型号 品牌 替代类型 描述 数据表
BQ77PL900DLRG4 TI

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