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The BQ77PL900DLR is a five to ten cell series-connected lithium-ion battery pack protector. With an integrated I2C communication interface, the BQ77PL900DLR can also be used as an analogue 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 can be used to power the host controller or support circuitry.

The BQ77PL900DLR incorporates a voltage conversion system for extracting battery parameters such as individual cell voltage and charge/discharge current. Variables such as voltage protection thresholds and detection delay times are programmable via the internal EEPROM.

The BQ77PL900DLR is available as a stand-alone self-contained battery protection system (stand-alone mode). It can also be combined with a host microcontroller to provide a fuel gauge or other battery management functions for the host system (host control mode).

The BQ77PL900DLR provides comprehensive safety protection against over-voltage, under-voltage, discharge over-current and discharge short-circuit. The BQ77PL900DLR automatically shuts down the FET driver when the EEPROM programmable safety threshold is reached. No external components are required to configure the protection functions.

Parameters of BQ77PL900DLR:

Function: Battery Protection  

Battery Chemistry: Li-Ion/Polymer  

Number of Cells: 5 ~ 10  

Fault Protection: Overcurrent, Over/Under Voltage, Short Circuit  

Interface: I2C  

Operating Temperature: -40°C ~ 100°C (TA)  

Mounting Type: Surface Mount  

Package/Shell: 48-BSSOP (0.295’, 7.50mm Width)  

Supplier Device Package: 48-SSOP 

BQ77PL900DLR Applications:

Cordless power tools

Electric powered bicycles/motorcycles

Uninterruptible Power Supply (UPS) systems

Medical equipment

Portable test equipment

• 1.Is the inventory and price seen on the platform accurate?

  A: all online goods on the shelves can be ordered online, but considering the large liquidity of spot inventory, it is not possible to achieve 100% accuracy at present. In case of any abnormality, you can contact our company online and give the corresponding solution.

• 2.Are all our products genuine?

  A: our self-supporting products are from cooperative domestic and foreign original factories or authorized agents, and the source can be traced to ensure the original and authentic products.

• 3.Can you provide the qualification certificate of the original factory or agent?

  A: at present, our self-employed brands TI，ST，ADI，NXP，LATTICE，CYPRESS，INFINEON，XILINX and other first-line brands. Other channels are the original factory and agency channels. If necessary, we can communicate and confirm according to the specific brand and model.

• 4.Can I make an inquiry through the company's website?

  A: You can inquire through the website, or by phone and email.

• 5.When can I deliver the goods after placing an order? How long will it take to get there?

  A: the delivery date is marked in most commodity information. You can estimate the delivery time of the commodity according to the delivery date. The specific arrival time depends on the warehouse where the commodity is located and the logistics mode you choose.

• 6.Can the company issue an invoice?

  A: you can issue ordinary invoices for individual users or special VAT invoices for enterprise users.