Texas Instruments BMS034, User Manual, Page: 3 / 31

1 Introduction
The BQ25792 and BQ25798 (BQ25792/8) is an integrated switched-mode buck-boost battery charge
management device in QFN package. It is intended to charge 1- to 4-series cell Li-ion and Li-polymer batteries.
The charger features a narrow VDC architecture (NVDC) which allows the system to be regulated to a minimum
value even if the battery is completely discharged. Additionally, the BQ25792/8 supports input source detection
through D+ and D- which is compatible with USB2.0, USB3.0 power delivery, non-standard adapters, and high
voltage adapters. With dual input source selection, USB OTG support, and an integrated 16-bit multi-channel
analog-to-digital converter (ADC), the BQ25792/8 is a complete charging solution.
1.1 EVM Features
The BQ25792/8EVM is a complete module for evaluating the BQ25792/8 charger IC in the QFN package. Key
features of this EVM include:
• Synchronous Switch Mode Buck-Boost Charger for 1s-4s Battery Configuration for 5-A Charging with 10-mA
Resolution
• Support for 3.6-V to 24-V Wide Range of Input Sources USB Auto-Detect, USB PD and Wireless Input
• Dual Input Source Selector to Drive Bi-Directional Blocking NFETs
• Power up USB Port from Battery (USB OTG) with 2.8-V to 22-V OTG Output Voltage with 10-mV Resolution
• Low Battery Quiescent Current < 1 µA in Shutdown Mode
• BQ25798 has MPPT and backup mode features.
The device data sheet, listed in Table 1-1 , provides detailed features and operation.
Table 1-1. Device Data Sheet
Device Data Sheet
BQ25792 SLUSDG1
BQ25798 SLUSDV2
www.ti.com Introduction
SLUUCB5E – JUNE 2020 – REVISED JULY 2022
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BQ25792EVM, BQ25798EVM and BQ25798BKUPEVM (BMS034) Evaluation
Module
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