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SLUUBM6–March 2018
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Copyright © 2018, Texas Instruments Incorporated
Overview
TRM Addendum
SLUUBM6–March 2018
Overview
Contents
1 General Description ......................................................................................................... 2
2 Production Plans............................................................................................................. 2
3 Added Features .............................................................................................................. 2
4 Changed and Removed Features ....................................................................................... 12
1 General Description
The bq78350-R2 device is a modified version of the catalog bq78350-R1 device, which modifies selected
functionality as well as adding new features. This document details the changes regarding the bq78350-
R2 device with respect to the bq78350-R1 device.
2 Production Plans
To use the bq78350-R2 device, customers must order the catalog bq78350-R1 device from TI.com, and
program the device with the TI-provided bq78350-R2 firmware. Thus, the package and pinout will remain
the same as the bq78350-R1 device, with the exception of some modified functionality associated with the
GPIO_B pin.
3 Added Features
3.1 PRE-DISCHARGE Mode
The bq78350-R2 device includes new functionality to provide pre-discharge control functionality on the
GPIO_B pin (pin 28) for use with a high-side PFET. This pin functions as an open-drain output pin, which
is expected to drive the gate of an NFET with source at ground. When the NFET is turned on, it will pull
down the PFET gate and enable pre-discharge. When the NFET is turned off, the PFET gate will be pulled
up and turn off the PFET, disabling pre-discharge.
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