9

FN9105.9

December 17, 2007

NOTE: For the 3x3 DFN package, the TOEN pin is left floating and the IMIN pin is connected to the V2P8 pin internally.

LOGIC

STATUS

EN

I

SEN

VIN

VBAT

100000:1

Current

Mirror

COUNTER

+

-

+

-

V

MIN

+

-

+

-

V

CH

IREF

+

-

IMIN

TEMP

FAULT

Recharge

Minbat

Under Temp

V

RECHRG

CA

VA

MIN_I

Input_OK

I

R

I

SEN

I

MIN

TOEN

V2P8

CHRG

STATUS

FAULT

+

-

+

-

Input_OK

V

POR

Trickle/Fast

References

V2P8

Temperature

Monitoring

Current

References

I

T

NTC

Interface

Over Temp

Batt Removal

TIME

OSC

GND

VIN

VBAT

Q

MAIN

Q

SEN

R

IREF

R

IMIN

C

1

+

100mV

V2P8

EN

GND

VBA

T

IREF

FAULT

VIN

5V Wall

Adapter

Battery

Pac

k

TEMP

STATUS

TIME

R

IREF

C

2

C

1

C

TIME

ISL6292

(3X3 DFN)

T

1k

Ω

1k

Ω

nF

15

F

μ

1

1 F

μ

Ω

k

80

F

μ

1

R

U

R

T

R

1

R

2

C

3

D

1

D

2

Typical Application Circuit For 3x3 DFN Package Option

FIGURE 16. BLOCK PROGRAM

Battery

Pack

ISL6292