5

FN9123.3

November 8, 2004

Absolute Maximum Ratings

Thermal Information

Supply Voltage (VCC_5V Pin) . . . . . . . . . . . . . . . . . . . . -0.3V to +7V

Input Voltage (VIN Pin) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+30V

BOOT1, 2 and UGATE1, 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . +35V

PHASE1, 2 and ISEN1, 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . +30V

BOOT1, 2 with respect to PHASE1, 2 . . . . . . . . . . . . . . . . . . . +6.5V

UGATE1, 2. . . . . . . . . . . . (PHASE1, 2 - 0.3V) to (BOOT1, 2 +0.3V)

Thermal Resistance (Typical)

28 Lead TSSOP (Note 1) . . . . . . . . . . .

75

NA

28 Lead QFN (Note 2) . . . . . . . . . . . . .

33

4

Maximum Junction Temperature (Plastic Package) . -55°C to 150°C

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

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

(TSSOP - Lead Tips Only)

Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to 85°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.

2.

the “case temp” location is the center of the exposed metal pad on the underside of the package. See Tech Brief TB379.

Electrical Specifications

Recommended operating conditions unless otherwise noted. Refer to Block Diagram and Typical Application

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

VIN SUPPLY

Input Voltage Range

5.6

12

24

V

VCC_5V SUPPLY (Note 4)

Input Voltage

4.5

5.0

5.6

V

Output Voltage

4.5

5.0

5.5

V

Maximum Output Current

60

-

-

mA

SUPPLY CURRENT

Shutdown Current (Note 5)

SD1 = SD2 = GND

-

50

375

µA

Operating Current (Note 6)

-

2.0

4.0

mA

REFERENCE SECTION

Nominal Reference Voltage

-

0.8

-

V

Reference Voltage Tolerance

-1.0

-

1.0

%

POWER-ON RESET

Rising VCC_5V Threshold

4.25

4.45

4.5

V

Falling VCC_5V Threshold

3.95

4.2

4.4

V

OSCILLATOR

Total Frequency Variation

270

300

330

kHz

Peak-to-Peak Sawtooth Amplitude (Note 7)

-

1.6

-

V

-

0.667

-

V

Ramp Offset (Note 8)

-1.0

-

V

SYNC Input Rise/Fall Time

-

-

10.0

ns

SYNC Frequency Range

5.1

5.6

6.0

MHz

SYNC Input HIGH Level

3.5

-

-

V

SYNC Input LOW Level

--

1.5

V

SYNC Input Minimum Pulse Width

10

-

-

ns

SYNC Output HIGH Level

VCC - 0.6V

-

-

V

ISL6402