X3100 Datasheet, PDF(8/40 Page) Xicor Inc. – 3 or 4 Cell Li-Ion Battery Protection and Monitor IC

English

English German Russian Spanish Italian Polish Chinese Japanese Korean French Portuguese	Language :

X3100 Datasheet, PDF (8/40 Pages) Xicor Inc. – 3 or 4 Cell Li-Ion Battery Protection and Monitor IC

◁

X3100/X3101 â Preliminary Information

CONFIGURATION REGISTER

The X3100 and X3101 can be conï¬gured for speciï¬c

user requirements using the Conï¬guration Register.

Table 1. Configuration Register Functionality

Bit(s) Name

Function

0-5

(donât care)

SWCEN

Switch Cell Charge Enable

threshold function ON/OFF

CELLN

Set the number of Li-Ion battery

cells used (3 or 4)

8-9

VCE1-VCE0

Select Cell Charge Enable

threshold

10-11 VOC1-VOC0 Select over-current threshold

12-13

VUV1-VUV0

Select over-discharge (under

voltage) threshold

14-15

VOV1-VOV0

Select over-charge voltage

threshold

Table 2. Configuration RegisterâUpper Byte

15 14 13 12 11 10 9 8

VOV1 VOV0 VUV1 VUV0 VOC1 VOC0 VCE1 VCE0

X3100 Default = 30H; X3101 Default = 00H.

Table 3. Configuration RegisterâLower Byte

543210

CELLN SWCEN x x x x x x

X3100 Default = C0H; X3101 Default = 40H.

Over-charge Voltage Settings

VOV1 and VOV0 control the cell over-charge level. See

section âOver-charge Protectionâ on page 13.

Table 4. Over-charge Voltage Threshold Selection

Configuration Register

Bits

VOV1

VOV0

Operation

VOV = 4.20V (Default)

VOV = 4.25V

VOV = 4.30V

VOV = 4.35V

Over-discharge Settings

VUV1 and VUV0 control the cell over-discharge (under

voltage threshold) level. See section âOver-discharge

Protectionâ on page 15.

Table 5. Over-discharge Threshold Selection.

Configuration

VUV1 VUV0

Operation

X3100

X3101

VUV=1.95V

VUV=2.25V

(X3101 default)

VUV=2.05V

VUV=2.15V

VUV=2.25V

(X3100 default)

VUV=2.35V

VUV=2.45V

VUV=2.55V

Over-current Settings

VOC1 and VOC0 control the pack over-current level.

See section âOver-Current Protectionâ on page 18.

Table 6. Over-Current Threshold Voltage Selection.

Configuration Register Bits

VOC1

VOC0

Operation

VOC=0.075V (Default)

VOC=0.100V

VOC=0.125V

VOC=0.150V

Cell Charge Enable Settings

VCE1, VCE0 and SWCEN control the pack charge

enable function. SWCEN enables or disables a circuit

that prevents charging if the cells are at too low a

voltage. VCE1 and VCE0 select the voltage that is

recognized as too low. See section âSleep Modeâ on

page 15.

Table 7. Cell Charge Enable Function

Configuration

SWCEN

Operation

Charge enable function: ON

Charge enable function: OFF

REV 1.1.8 12/10/02

www.xicor.com

Characteristics subject to change without notice. 8 of 40

▷