6

FN9289.1

August 21, 2006

Absolute Maximum Ratings

Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6V

Supply Voltage, PVCC . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +15V

GND - 5V (<100ns Pulse Width, 2µJ) to PVCC+ 0.3V

Input, Output, or I/O Voltage . . . . . . . . . GND - 0.3V to VCC + 0.3V

ESD Classification . . . . . . . . . . . . . . . . . . . . . . . Class I JEDEC STD

Recommended Operating Conditions

VCC Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5V ±5%

PVCC Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . +5V to 12V ±5%

Ambient Temperature (ISL6312CRZ) . . . . . . . . . . . . . 0°C to +70°C

Ambient Temperature (ISL6312IRZ) . . . . . . . . . . . . .-40°C to +85°C

Thermal Information

Thermal Resistance

QFN Package (Notes 1, 2) . . . . . . . . . .

+32

+3.5

Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . +150°C

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

Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . +300°C

CAUTION: Stress 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 section of this specification is not implied.

NOTES:

1.

θ

Tech Brief TB379.

2. For

3. Parameter magnitude guaranteed by design. Not 100% tested.

Electrical Specifications

Recommended Operating Conditions, Unless Otherwise Specified.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

BIAS SUPPLIES

Input Bias Supply Current

15

20

25

mA

Gate Drive Bias Current - PVCC1_2 Pin

2

4.3

6

mA

Gate Drive Bias Current - PVCC3 Pin

1

2.1

3

mA

VCC POR (Power-On Reset) Threshold

VCC rising

4.25

4.38

4.50

V

VCC falling

3.75

3.88

4.00

V

PVCC POR (Power-On Reset) Threshold

PVCC rising

4.25

4.38

4.50

V

PVCC falling

3.60

3.88

4.00

V

PWM MODULATOR

225

250

275

kHz

Adjustment Range of Switching Frequency

(Note 3)

0.08

-

1.0

MHz

(Note 3)

-

1.50

-

V

Maximum Duty Cycle (Note 3)

(Note 3)

-

99.5

-

%

CONTROL THRESHOLDS

ENLL Rising Threshold

-0.85

-

V

ENLL Hysteresis

-110

-

mV

EN_PH4 Rising Threshold

1.160

1.210

1.250

V

EN_PH4 Falling Threshold

1.00

1.06

1.10

V

COMP Shutdown Threshold

COMP falling

0.1

0.2

0.3

V

ISL6312

ISL6312