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bq78350-R1

SLUSCD0B – AUGUST 2015 – REVISED NOVEMBER 2018

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Copyright © 2015–2018, Texas Instruments Incorporated

Pin Functions (continued)

PIN

NUMBER

PIN NAME

TYPE

DESCRIPTION

20

LED5

O

LED5/LCD5 display segment that drives an external LED/LCD, depending on the firmware

configuration

21

GPIO A

I/O

Configurable Input or Output. If not used, tie to VSS.

22

VSS

—

Negative supply voltage

23

VSS

—

Negative supply voltage

24

MRST

I

Master reset input that forces the device into reset when held low. This pin must be held high for

normal operation.

25

VSS

—

Negative supply voltage

26

VCC

P

Positive supply voltage

27

RBI

P

RAM backup input. Connect a capacitor to this pin and VSS to protect loss of RAM data in case of

short circuit condition.

28

GPIO B

I/O

Configurable input or output. If not used, tie to VSS.

29

ADREN

O

Optional digital signal enables address detection measurement to reduce power consumption.

30

SMBA

IA

Optional SMBus address detection input. If this pin is not used, then it should be tied to VSS.

(1)

Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings

only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating

conditions is not implied. Exposure to absolute–maximum–rated conditions for extended periods may affect device reliability.

7 Specifications

7.1 Absolute Maximum Ratings

Over operating free-air temperature range (unless otherwise noted)

(1)

MIN

MAX

UNIT

VCC relative to VSS

Supply voltage range

–0.3

2.75

V

V(IOD) relative to VSS

Open-drain I/O pins

–0.3

6

V

VI relative to VSS

Input voltage range to all other pins

–0.3

VCC + 0.3

V

Operating free-air temperature range, TA

–40

85

°C

Storage temperature range, Tstg

–65

150

°C

(1)

JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.

(2)

JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

7.2 ESD Ratings

VALUE

UNIT

V(ESD)

Human Body Model (HBM) ESD stress voltage(1)

±2000

V

Charged Device Model (CDM) ESD stress voltage(2)

±500

7.3 Recommended Operating Conditions

VCC = 2.4 V to 2.6 V, TA = –40°C to 85°C (unless otherwise noted)

MIN

NOM

MAX

UNIT

VCC

Supply voltage

2.4

2.5

2.6

V

VO

Output voltage range

SAFE

VCC

SMBC, SMBD, VEN

5.5

V

ADREN, GPIO A, GPIO B, SDATA, SCLK,

PWRM, LED1...5 (when used as GPO)

VCC

VIN

Input voltage range

BAT, VAUX, SMBA

1

V

SMBD, SMBC, ALERT, DISP, PRES, KEYIN

5.5

SDATA, GPIO A, GPIO B, LED1...5 (when

used as GPI)

VCC

TOPR

Operating Temperature

–40

85

°C