5- to 10-Cell Li+ Protector with Cell Balancing

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7

Pin Description

PIN

NAME

FUNCTION

1

RSC

Short-Circuit Voltage Threshold. The resistor from this pin to the positive terminal of the cell stack

selects the threshold voltage for a short-circuit condition in the discharge direction.

2

RDOC

Discharge Overcurrent Voltage Threshold. The resistor from this pin to the positive terminal of the cell

stack selects the threshold voltage for an overcurrent condition in the discharge direction.

3

4, 5

SEL0,

SEL1

for a logic-low or logic-high, respectively. Leave unconnected to achieve the midthreshold. See Table

2 for how to drive this pin for a particular number of cells.

6

CDOCD

Discharge Overcurrent Delay Time. Connect a capacitor from this pin to GND to select the amount of

time for which a discharge overcurrent condition must persist before shutting off the DC FET.

7

SLEEP

Sleep-Mode Select Input. Driving this pin to a logic-low level forces the part into the lowest power state.

The part exits Sleep Mode once a charge voltage is applied. When CBCFG is high, a logic-high on this

pin enables cell balancing.

8

CSCD

Short-Circuit Current Delay Time. Connect a capacitor from this pin to GND to select the amount of time

for which a short-circuit current condition must persist before shutting off the DC FET.

9

CBCFG

Charge-Balance Configuration Input. When this pin is at a logic-low, charge balancing is enabled if

at a logic-high.

10, 11

CBS0,

CBS1

or logic-high, respectively. Leave unconnected to achieve the midthreshold. See Table 4 for how to

drive this pin for a particular cell-balancing voltage threshold.

12, 13

OVS0,

OVS1

or logic-high, respectively. Leave unconnected to achieve the midthreshold. See Table 3 for how to

drive this pin for a particular overvoltage threshold.

14, 30

N.C.

No Connection. Not internally connected.

15

GND

Ground. Connect to the negative terminal of the lowest voltage cell.

16

V00

Negative Terminal Voltage Sense. Connect to the negative terminal of the 1st cell in the battery stack.

17

V01

Cell 01 Voltage Sense. Connect to the positive terminal of the 1st cell in the battery stack.

18

V02

Cell 02 Voltage Sense. Connect to the positive terminal of the 2nd cell in the battery stack.

19

V03

Cell 03 Voltage Sense. Connect to the positive terminal of the 3rd cell inf the battery stack.

20

V04

Cell 04 Voltage Sense. Connect to the positive terminal of the 4th cell in the battery stack.

21

V05

Cell 05 Voltage Sense. Connect to the positive terminal of the 5th cell in the battery stack.

22

V06

Cell 06 Voltage Sense. Connect to the positive terminal of the 6th cell in the battery stack.

23

V07

Cell 07 Voltage Sense. Connect to the positive terminal of the 7th cell in the battery stack.

24

V08

Cell 08 Voltage Sense. Connect to the positive terminal of the 8th cell in the battery stack.

25

V09

Cell 09 Voltage Sense. Connect to the positive terminal of the 9th cell in the battery stack.

26

V10

Cell 10 Voltage Sense. Connect to the positive terminal of the 10th cell in the battery stack.

27

Connect to the Most Positive Cell Terminal

28

DC

on and turn off the discharge FET.