BQ78350DBTR-R1
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Texas Instruments BQ78350DBTR-R1

Manufacturer No:
BQ78350DBTR-R1
Manufacturer:
Texas Instruments
Package:
Tape & Reel (TR)
Description:
IC BATT MON MULTI 3-15C 30TSSOP
Delivery:
Payment:
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Product Introduction

Overview

The Texas Instruments BQ78350DBTR-R1 is a state-of-the-art Li-Ion and LiFePO4 Battery Management Controller designed to work in conjunction with the bq769x0 family of Analog Front End (AFE) protection devices. This controller provides a comprehensive set of Battery Management System (BMS) subsystems, facilitating faster product development and time-to-market. It supports battery configurations ranging from 3-series to 15-series cells and offers accurate fuel gauging, state-of-health (SoH) monitoring, cell balancing, and a full range of voltage-, current-, and temperature-based protection features.

Key Specifications

Parameter Specification
Part Number BQ78350DBTR-R1
Package Type TSSOP (30 pins)
Body Size (Nom) 7.80 mm x 6.40 mm
Battery Capacity (Min/Max) 100 mAh / 320,000 mAh
Cell Chemistry Li-Ion/Li-Polymer, LiFePO4
Communication Interface I2C, SMBus
Number of Series Cells >4 Cells
Operating Temperature Range -40°C to 85°C
Cell Balancing External, Internal
External Capacity Indication LCD, LED, SOC
Gas Gauge Algorithm CEDV (Compensated End-of-Discharge Voltage)

Key Features

  • Compensated End-of-Discharge Voltage (CEDV) gauging algorithm for accurate fuel gauging.
  • Supports SMBus host communication for data transfer.
  • Flexible configuration for 3- to 5-series (bq76920), 6- to 10-series (bq76930), and 9- to 15-series (bq76940) Li-Ion and LiFePO4 batteries.
  • Supports battery configurations up to 320 Ahr and charge/discharge current reporting up to 320 A.
  • On-chip temperature sensor option and external NTC thermistor support from the companion AFE.
  • Full array of programmable protection features including voltage, current, and temperature protection.
  • Lifetime data logging for warranty and analysis purposes.
  • Supports CC-CV charging, including precharge, charge inhibit, and charge suspend.
  • Optional resistor programmable SMBus slave address for up to eight different bus addresses.
  • Drives up to a 5-segment LED or LCD display for state-of-charge indication.
  • Provides SHA-1 authentication for security.

Applications

  • Light Electric Vehicles (LEVs): eBikes, eScooters, Pedelec, and Pedal-Assist Bicycles.
  • Power and Gardening Tools.
  • Battery Backup and Uninterruptible Power Supply (UPS) Systems.
  • Wireless Base Station Backup Systems.
  • Telecom Power Systems.
  • Handheld Vacuum Cleaners and Robot Vacuums.

Q & A

  1. What is the primary function of the BQ78350DBTR-R1?

    The BQ78350DBTR-R1 is a Li-Ion and LiFePO4 Battery Management Controller that provides accurate fuel gauging, state-of-health monitoring, cell balancing, and various protection features.

  2. Which battery chemistries does the BQ78350DBTR-R1 support?

    The BQ78350DBTR-R1 supports Li-Ion, Li-Polymer, and LiFePO4 battery chemistries.

  3. What communication interfaces does the BQ78350DBTR-R1 use?

    The BQ78350DBTR-R1 uses I2C and SMBus communication interfaces.

  4. What is the operating temperature range of the BQ78350DBTR-R1?

    The operating temperature range is -40°C to 85°C.

  5. Does the BQ78350DBTR-R1 support external capacity indication?
  6. What is the CEDV algorithm used in the BQ78350DBTR-R1?

    The CEDV (Compensated End-of-Discharge Voltage) algorithm is used for accurate fuel gauging.

  7. Can the BQ78350DBTR-R1 be configured for different series cell applications?
  8. Does the BQ78350DBTR-R1 support lifetime data logging?
  9. What security feature does the BQ78350DBTR-R1 provide?
  10. What types of charging does the BQ78350DBTR-R1 support?

Product Attributes

Function:Battery Monitor
Battery Chemistry:Multi-Chemistry
Number of Cells:3 ~ 15
Fault Protection:Over Current, Over Temperature, Over/Under Voltage
Interface:SMBus
Operating Temperature:-40°C ~ 85°C (TA)
Mounting Type:Surface Mount
Package / Case:30-TFSOP (0.173", 4.40mm Width)
Supplier Device Package:30-TSSOP
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Similar Products

Part Number BQ78350DBTR-R1 BQ78350DBTR-R1A BQ78350DBT-R1
Manufacturer Texas Instruments Texas Instruments Texas Instruments
Product Status Not For New Designs Active Not For New Designs
Function Battery Monitor Battery Monitor Battery Monitor
Battery Chemistry Multi-Chemistry Lithium Ion/Polymer Multi-Chemistry
Number of Cells 3 ~ 15 3 ~ 15 3 ~ 15
Fault Protection Over Current, Over Temperature, Over/Under Voltage Over Current, Over Temperature, Over/Under Voltage Over Current, Over Temperature, Over/Under Voltage
Interface SMBus SMBus SMBus
Operating Temperature -40°C ~ 85°C (TA) -40°C ~ 85°C (TA) -40°C ~ 85°C (TA)
Mounting Type Surface Mount Surface Mount Surface Mount
Package / Case 30-TFSOP (0.173", 4.40mm Width) 30-TFSOP (0.173", 4.40mm Width) 30-TFSOP (0.173", 4.40mm Width)
Supplier Device Package 30-TSSOP 30-TSSOP 30-TSSOP

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