bq20z65-R1

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SLUS990 – DECEMBER 2009

TERMINAL FUNCTIONS (continued)

TERMINAL

DESCRIPTION

NO.

NAME

Cell votage sense input and cell balancing input for the negative voltage of the bottom cell in cell

38

VC5

IA, P

stack.

Cell votage sense input and cell balancing input for the positive voltage of the bottom cell and the

39

VC4

IA, P

negative voltage of the second lowest cell in cell stack.

Cell voltage sense input and cell balancing input for the positive voltage of the second lowest cell in

40

VC3

IA, P

cell stack and the negative voltage of the second highest cell in 4 cell applications.

Cell voltage sense input and cell balancing input for the positive voltage of the second highest cell

41

VC2

IA, P

and the negative voltage of the highest cell in 4 cell applications. Connect to VC3 in 2 cell stack

applications.

Cell voltage sense input and cell balancing input for the positive voltage of the highest cell in cell

42

VC1

IA, P

stack in 4 cell applications. Connect to VC2 in 3 or 2 cell stack applications.

43

BAT

I, P

Battery stack voltage sense input.

44

CHG

O

High side N-channel charge FET gate drive

ABSOLUTE MAXIMUM RATINGS

Over operating free-air temperature (unless otherwise noted)

(1)

PIN

UNIT

BAT, VCC

–0.3 V to 34 V

PACK, PMS

–0.3 V to 34 V

Supply voltage range

VC(n)-VC(n+1); n = 1, 2, 3, 4

–0.3 V to 8.5 V

VC1, VC2, VC3, VC4

–0.3 V to 34 V

VC5

–0.3 V to 1 V

PFIN, SMBD, SMBC. LED1, LED2, LED3,

–0.3 V to 6 V

LED4, LED5, DISP

TS1, TS2, SAFE, VCELL+, PRES, ALERT

Input voltage range

MRST, GSRN, GSRP, RBI

ASRN, ASRP

–1 V to 1 V

DSG, CHG, GPOD

–0.3 V to 34 V

ZVCHG

Output voltage range

TOUT, ALERT, REG33

–0.3 V to 6 V

RESET

–0.3 V to 7 V

REG25

–0.3 V to 2.75 V

PRES, PFIN, SMBD, SMBC, LED1, LED2,

Maximum combined sink current for input pins

50 mA

LED3, LED4, LED5

Operating free-air temperature range

–40°C to 85°C

Functional temperature

–40°C to 100°C

Storage temperature range

–65°C to 150°C

(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.

RECOMMENDED OPERATING CONDITIONS

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

PIN

MIN

NOM

MAX

UNIT

Supply voltage

VCC, BAT

4.5

25

V

Minimum startup voltage

VCC, BAT, PACK

5.5

V

Copyright © 2009, Texas Instruments Incorporated

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