2

FN6626.0

December 17, 2007

Thermal Information

Maximum pin voltage, all pins except below 6.5V

VBAT, FAULT, FB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24V

|VHI - SWS1, SWS2| . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5V

SWD1, SWD2, OVP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34V

Continuous Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1A

Operating Conditions

Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +105°C

Thermal Resistance

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

39

2.5

Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . +135°C

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

Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below

http://www.intersil.com/pbfree/Pb-FreeReflow.asp

CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and

result in failures not covered by warranty.

IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise noted, all tests

NOTES:

1.

Tech Brief TB379.

2. For

Electrical Specifications

PARAMETER

DESCRIPTION

CONDITIONS

MIN

TYP

MAX

UNIT

VIN

Input Supply Voltage

5

16

V

VIN

Input Supply Voltage

TMAX disabled

2.7

12

V

Input Supply Monitor

Normal operating range

2.7

16

V

Supply Fault Threshold

ground

17.6

21

24

V

No switching, EN/PWM = 1

2.7

3.5

mA

No switching, EN/PWM = 0

0.6

2.5

µA

Power FET On-Resistance

0.15

0.25

Ω

Regulated Auxiliary Supply

4.75

5

5.25

V

Auxiliary Supply Open Loop Output

Resistance

40

Ω

Auxiliary Supply Closed Loop Output

Resistance

6.5

Ω

Output Drive Current

1

A

Power Switch Current Limit

BUCK/BOOSTN = GND

3.6

A

Power Switch Current Limit

BUCK/BOOSTN = VDC

2.4

A

OVPH

Overvoltage Positive Going Voltage

Mode Threshold

Upper threshold to enter overvoltage fault mode,

31

32

V

OVPL

Overvoltage Negative Going Voltage

Mode Threshold

Lower threshold to exit overvoltage fault mode,

20

23

V

Protection FET VGS (Gate Clamp)

9.76

12.2

14.64

V

Protection FET VGS (Gate Clamp)

8.16

10.2

12.24

V

Feedback Voltage

0.18

0.2

0.22

V

Light Control Voltage Linear Input

Range

Mode = 1, analog control of LED current

0.25

3

V

Feedback Undervoltage Fault

100

160

200

mV

ISL78100