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BQ78350DBTR-R1 Datasheet(PDF) 3 Page - Texas Instruments

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Part # BQ78350DBTR-R1
Description  Battery Management Controller Companion
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

BQ78350DBTR-R1 Datasheet(HTML) 3 Page - Texas Instruments

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1
2
7
6
5
4
3
20
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18
17
16
15
14
SDA
SCL
PRES
PRECHG
COM
ALERT
SMBA
ADREN
VCC
VSS
MRST
VSS
VSS
SMBD
SAFE
8
13
9
10
12
11
PWRM
GPIO A
VEN
SMBC
VAUX
LED1
LED2
LED3
LED4
LED5
RBI
GPIO B
DISP
BAT
KEYIN
21
22
23
24
25
26
27
28
29
30
bq78350-R1
www.ti.com
SLUSCD0 – AUGUST 2015
6 Description (continued)
The bq78350-R1 controller and the bq769x0 AFE support from 3-series to 15-series cell applications. The
bq78350-R1 provides an accurate fuel gauge and state-of-health (SoH) monitor, as well as cell balancing and a
full range of voltage-, current-, and temperature-based protection features.
The bq78350-R1 offers optional LED or LCD display configurations for the capacity reporting. It also makes data
available over its SMBus 1.1 interface. Battery history and diagnostic data is also kept within the device in non-
volatile memory and is available over the same interface.
7 Pin Configuration and Functions
30-Pin DBT Package
Pin Functions
PIN
I/O(1)
DESCRIPTION
NO.
NAME
1
COM
O
Open Drain Output LCD common connection. Leave unconnected if not used.
2
ALERT
I
Input from the bq769x0 AFE
3
SDA
I/O
Data transfer to and from the bq769x0 AFE. Requires a 10-k pullup to VCC.
4
SCL
I/O
Communication clock to the bq769x0 AFE. Requires a 10-k pullup to VCC.
Programmable polarity (default is active low) output to enable an optional precharge FET. This pin
5
PRECHG
O
requires an external pullup to 2.5 V when configured as active high, and is open drain when
configured as active low.
6
VAUX
AI
Auxiliary voltage input. If this pin is not used, then it should be tied to VSS.
7
BAT
AI
Translated battery voltage input
Active low input to sense system insertion. This typically requires additional ESD protection. If this
8
PRES
I
pin is not used, then it should be tied to VSS.
A low level indicates application key-switch is inactive on position. A high level causes the DSG
9
KEYIN
I
protection FET to open. If this pin is not used, then it should be tied to VSS.
(1)
I = Input, IA = Analog input, I/O = Input/output, I/OD = Input/Open-drain output, O = Output, OA = Analog output, P = Power
Copyright © 2015, Texas Instruments Incorporated
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Product Folder Links: bq78350-R1


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