BQ40Z50RSMR-R2 datasheet(3/51 Pages) TI1

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PBI

PTCEN

VC4

PTC

VC3

LEDCNTLC

VC2

LEDCNTLB

VC1

LEDCNTLA

SRN

SMBC

SMBD

SRP

DISP

Not to scale

Thermal

Pad

bq40z50-R2

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SLUSCS4 – JUNE 2017

Product Folder Links: bq40z50-R2

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(1)

P = Power Connection, O = Digital Output, AI = Analog Input, I = Digital Input, I/OD = Digital Input/Output

5 Description (continued)

The bq40z50-R2 device supports TURBO Mode 2.0 by providing the available max power and max current to the

host system. The device also supports Battery Trip Point to send a BTP interrupt signal to the host system at the

preset state of charge thresholds.

The bq40z50-R2 provides software-based 1st- and 2nd-level safety protection against overvoltage, undervoltage,

overcurrent, short-circuit current, overload, and overtemperature conditions, as well as other pack- and cell-

related faults.

SHA-1 authentication, with secure memory for authentication keys, enables identification of genuine battery

packs.

The compact 32-lead QFN package minimizes solution cost and size for smart batteries while providing

maximum functionality and safety for battery gauging applications.

6 Pin Configuration and Functions

RSM Package

32-Pin VQFN with Exposed Thermal Pad

Top View

Pin Functions

PIN NUMBER

PIN NAME

TYPE

DESCRIPTION

PBI

P(1)

Power supply backup input pin

VC4

Sense voltage input pin for the most positive cell, and balance current input

for the most positive cell

VC3

Sense voltage input pin for the second-most positive cell, balance current

input for the second-most positive cell, and return balance current for the

most positive cell

VC2

Sense voltage input pin for the third-most positive cell, balance current input

for the third-most positive cell, and return balance current for the second-

most positive cell

VC1

Sense voltage input pin for the least positive cell, balance current input for

the least positive cell, and return balance current for the third-most positive

cell

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