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Evaluation Module Overview
1 Evaluation Module Overview
1.1 Introduction
The BQ76905 features a high accuracy monitoring system with dedicated coulomb counter and accumulated
charge integration, a highly configurable protection subsystem, and support for host controlled cell balancing.
Integration includes low-side protection NFET drivers, a programmable LDO for external system use, and an
2
I
C host communication interface supporting up to 400-kHz operation with optional CRC. The evaluation module
includes one BQ76905 integrated circuit (IC), sense resistor, one thermistor, power FETs, and all other onboard
components necessary to protect the cells from overcharge, over discharge, short circuit, overcurrent discharge,
over temperature, and under temperature.
1.2 Kit Contents
•
BQ76905 circuit module
•
USB A to microUSB cable
1.3 Specification
This section summarizes the performance specifications of the BQ76905 circuit module in the default 5-cell
series FET configuration.
Typical voltage depends on the number of cells configured. Typical current depends on the application. Board
cooling can be required for continuous operation at or below maximum current.
Input voltage BATT+ with respect to BATT–
Continuous charge or discharge current
Operating temperature range
1.4 Device Information
EVM Part Number
BQ76905EVM
Although capacity is shown as Any, practical limits of the physical construction of the module typically
limits the operation of the EVM to a 1P or 2P battery construction. Refer to the physical construction
section for board details.
2
BQ76905 Evaluation Module
Table 1-1. Performance Specification Summary
Specification
Table 1-2. Device Information
Chemistry
Li-Ion
Note
Copyright © 2023 Texas Instruments Incorporated
Min
Typ
3
0
20
25
Configuration
5 cells
www.ti.com
Max
Unit
–
25
V
–
6
A
30
°C
Capacity
Any
SLUUCY9 – NOVEMBER 2023
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