ISL6257

FN9288 Rev 2.00

Page 2 of 22

Jan 17, 2007

Absolute Maximum Ratings

Thermal Information

DCIN, CSIP, CSON to GND. . . . . . . . . . . . . . . . . . . . . -0.3V to +28V

CSIP-CSIN, CSOP-CSON . . . . . . . . . . . . . . . . . . . . . -0.3V to +0.3V

CSIP-SGATE, CSIP-BGATE . . . . . . . . . . . . . . . . . . . . . -0.3V to 16V

PHASE to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -7V to 30V

BOOT to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +35V

BOOT to VDDP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -2V to 28V

ACLIM, ACPRN, CHLIM, DCPRN, VDD to GND. . . . . . . -0.3V to 7V

BOOT-PHASE, VDDP-PGND . . . . . . . . . . . . . . . . . . . . . -0.3V to 7V

ACSET and DCSET to GND (Note 1) . . . . . . . -0.3V to VDD + 0.3V

FB, ICOMP, VCOMP to GND. . . . . . . . . . . . . . -0.3V to VDD +0.3V

VREF, CELLS to GND . . . . . . . . . . . . . . . . . . . -0.3V to VDD + 0.3V

EN, VADJ, PGND to GND . . . . . . . . . . . . . . . . -0.3V to VDD + 0.3V

UGATE. . . . . . . . . . . . . . . . . . . . . . . . PHASE-0.3V to BOOT + 0.3V

LGATE . . . . . . . . . . . . . . . . . . . . . . . . . PGND-0.3V to VDDP + 0.3V

PGND to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +0.3V

Thermal Resistance

QFN Package (Notes 2, 3). . . . . . . . . .

39

9.5

QSOP Package (Note 2) . . . . . . . . . . .

80

NA

Junction Temperature Range. . . . . . . . . . . . . . . . . .-10°C to +150°C

Operating Temperature Range . . . . . . . . . . . . . . . .-10°C to +100°C

Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C

Lead Temperature (soldering, 10s) . . . . . . . . . . . . . . . . . . . . +300°C

CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the

device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

NOTES:

1. ACSET and DCSET may be operated 1V below GND if the current through ACSET and DCSET is limited to less than 1mA.

2.

Brief TB379.

3. For

Electrical Specifications

DCIN = CSIP = CSIN = 18V, CSOP = CSON = 12V, ACSET = DCSET = 1.5V, ACLIM = VREF,

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

SUPPLY AND BIAS REGULATOR

DCIN Input Voltage Range

725

V

DCIN Quiescent Current

EN = VDD or GND, 7V

DCIN 25V

1.4

3

mA

Battery Leakage Current (Note 4)

DCIN = 0, no load

3

10

µA

VDD Output Voltage/Regulation

7V

4.925

5.075

5.225

V

VDD Undervoltage Lockout Trip Point

VDD Rising

4.0

4.4

4.6

V

Hysteresis

150

250

400

mV

Reference Output Voltage VREF

0

2.365

2.39

2.415

V

FB Feedback Voltage

2.065

2.1

2.12

V

Battery Charge Voltage Accuracy

CSON = 16.8V, CELLS = VDD, VADJ = Float-0.5

0.5

%

CSON = 12.6V, CELLS = GND, VADJ = Float

-0.5

0.5

%

CSON = 8.4V, CELLS = Float, VADJ = Float

-0.5

0.5

%

CSON = 17.64V, CELLS = VDD, VADJ = VREF

-0.5

0.5

%

CSON = 13.23V, CELLS = GND, VADJ = VREF

-0.5

0.5

%

CSON = 8.82V, CELLS = Float, VADJ = VREF

-0.5

0.5

%

CSON = 15.96V, CELLS = VDD, VADJ = GND

-0.5

0.5

%

CSON = 11.97V, CELLS = GND, VADJ = GND

-0.5

0.5

%

CSON = 7.98V, CELLS = Float, VADJ = GND

-0.5

0.5

%

TRIP POINTS

ACSET Threshold

1.24

1.26

1.28

V

ACSET Input Bias Current Hysteresis

2.2

3.4

4.4

µA

ACSET Input Bias Current

ACSET

 1.26V

2.2

3.4

4.4

µA