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BQ77908ADBTR The BQ77908ADBTR from Texas Instruments is a precision protector and cell balancing device for 4- to 8-series Li-Ion and Li-Polymer battery packs. It offers comprehensive fault protection features.
Mfr Part #:

BQ77908ADBTR

Available from 2 distributors
Mfr Name: Texas Instruments
Texas Instruments
The BQ77908ADBTR from Texas Instruments is a precision protector and cell balancing device for 4- to 8-series Li-Ion and Li-Polymer battery packs. It offers comprehensive fault protection features.
✓ Total Stock: 14,664 pcs
$ Price Range: $6.61

BQ77908ADBTR Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Unit Electronics Co.,Limited ✓
Non-Authorised Inventory information
12,576 pcs
On Request
12576 pcs On Request 1 On Request On Request On Request On Request On Request
Optech Co.,Limited ✓
Non-Authorised Inventory information
2,088 pcs
On Request
2088 pcs On Request 1 On Request On Request 12+ On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

BQ77908ADBTR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Battery Chemistry
Fault Protection
Function
Interface
Mounting Type
Number of Cells
Operating Temperature
SVHC Present
Supplier Device Package
Supplier Package
Supply Voltage
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BQ77908ADBTR Description

Short technical summary and product information.

The BQ77908ADBTR is a stand-alone multi-cell Li-Ion/Li-Polymer precision protector and cell balancing device from Texas Instruments. It is designed to monitor individual cell voltages in battery packs ranging from 4 to 8 series cells.

 

Key electrical specifications include a supply voltage range of 5.6V to 40V, a typical operating current of 50µA in normal mode, and 5µA in shutdown mode. The device provides overvoltage protection with a minimum threshold of 4.15V and a maximum of 4.25V. It features an I²C interface for communication and control.

 

This IC integrates automatic cell balancing with internal 50mA cell circuits, ensuring optimal performance by maintaining balanced cell voltages. The balancing function can be configured for continuous operation, only during charging, or disabled entirely. Advanced safety features include the ability to control split power-path MOSFETs, detect open cell sense lines, and identify open or shorted external temperature sensor faults.

 

The BQ77908ADBTR is supplied in a 38-TSSOP package suitable for surface mounting. Its operating temperature range is -25°C to 85°C.

BQ77908ADBTR Quick Information

Product Type: Battery Management IC
Canonical Name: BQ77908A Multi-Cell Lithium-Ion/Polymer Precision Protector
Subcategory: Battery Management ICs

BQ77908ADBTR Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

BQ77908ADBTR Estimated Pricing

Qty Low High
1+ $6.61 $6.61

Estimated market price range - modelled values for guidance only, not live distributor offers.

BQ77908ADBTR Features

  • Monitors 4 to 8 series Li-Ion/Li-Polymer cells.
  • Provides overvoltage protection from 4.15V to 4.25V.
  • Features I2C interface for control and monitoring.
  • Integrates automatic 50mA cell balancing circuits.
  • Supplied in a 38-TSSOP surface mount package.

BQ77908ADBTR Applications

  • Protects multi-cell battery packs.
  • Enables charge and discharge control.
  • Suitable for Li-Ion and Li-Polymer batteries.
  • Used in portable electronic devices.
  • Supports programmable safety conditions.

BQ77908ADBTR FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating temperature range for the BQ77908ADBTR?

The operating temperature range is -25°C to 85°C.

How many series cells can the BQ77908ADBTR protect?

It can protect 4 to 8 series cells.

What is the typical operating current of the BQ77908ADBTR in normal mode?

The typical operating current in normal mode is 50µA.

What is the maximum supply voltage for the BQ77908ADBTR?

The maximum supply voltage is 50V.

What is the minimum battery overvoltage protection threshold?

The minimum battery overvoltage protection threshold is 4.15V.

What type of battery chemistry is supported by the BQ77908ADBTR?

It supports Lithium Ion and Lithium Polymer battery chemistries.

What package type is the BQ77908ADBTR supplied in?

The BQ77908ADBTR is supplied in a 38-TSSOP package.

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