BQ24705_15 datasheet(10/32 Pages) TI1

Part #	BQ24705

Description	Host-Controlled Multi-Cell Battery Charger

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Manufacturer	TI1 [Texas Instruments]

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1

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9

10

0

0.1

0.2

0.3

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0.5

0.6

0.7

0.8

0.9

1

SRSET/V

Ratio

REF

SRSET Varied,

4-Cell,

Vbat=16V

16

16.2

16.4

16.6

16.8

17

17.2

17.4

17.6

17.8

18

18.2

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

VADJ/V

Ratio

REF

VADJ=0-V

,

4-Cell,

NoLoad

REF

V

=16.8V

reg

-0.2

-0.1

0

0.1

0.2

0

2000

4000

6000

8000

ChargeCurrent-mA

0

1

2

3

4

6

7

8

9

10

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

ACSET/V

Ratio

REF

ACSET Varied,

4-Cell,

Vbat=16V

5

SRSET Varied

-10

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

0

2

4

6

8

I

Setpoint- A

(CHRG) -

4-Cell,VBAT =16V

VADJ=0-V

REF

-0.10

-0.08

-0.06

-0.04

-0.02

0

0.02

0.04

0.06

0.08

0.10

16.5

17

17.5

18

18.5

19

V

-Setpoint-V

(BAT)

4-Cell,noload

bq24705

SLUS779B – DECEMBER 2007 – REVISED MARCH 2009............................................................................................................................................... www.ti.com

BAT VOLTAGE

CHARGE CURRENT

vs

VADJ/VREF RATIO

SRSET/VREF RATIO

Figure 6.

Figure 7.

INPUT CURRENT

BAT VOLTAGE REGULATION ACCURACY

vs

ACSET/VREF RATIO

CHARGE CURRENT

Figure 8.

Figure 9.

BAT VOLTAGE REGULATION ACCURACY

CHARGE CURRENT REGULATION ACCURACY

Figure 10.

Figure 11.

10

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