BQ40Z50-R2 Datasheet, PDF (3/51 Pages) Texas Instruments – 1-Series, 2-Series, 3-Series, and 4-Series Li-Ion Battery Pack Manager

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bq40z50-R2
SLUSCS4 – JUNE 2017
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
PBI
1
VC4
2
VC3
3
VC2
4
VC1
5
SRN
6
NC
7
SRP
8
Thermal
Pad
24
PTCEN
23
PTC
22
LEDCNTLC
21
LEDCNTLB
20
LEDCNTLA
19
SMBC
18
SMBD
17
DISP
Not to scale
PIN NUMBER
1
PBI
2
VC4
PIN NAME
3
VC3
4
VC2
5
VC1
TYPE
P ⁽¹⁾
IA
IA
IA
IA
Pin Functions
DESCRIPTION
Power supply backup input pin
Sense voltage input pin for the most positive cell, and balance current input
for the most positive cell
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
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
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
(1) P = Power Connection, O = Digital Output, AI = Analog Input, I = Digital Input, I/OD = Digital Input/Output
Copyright © 2017, Texas Instruments Incorporated
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