2

FN6367.1

February 21, 2008

Thermal Information

Maximum Pin Voltages, all pins except below . . . . . . . . . . . . . . 6.5V

LX1, LX2, SUPP, SUPN, NOUT, PROT, C1N, C2N . . . . . . . . .24V

PVIN1, PVIN2, LXL1, LXL2 . . . . . . . . . . . . . . . . . . . . . . . . . 16.8V

EN, CTL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16.5V

DRN, POUT, COM, C1P, C2P. . . . . . . . . . . . . . . . . . . . . . . . . .33V

CB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21V

Recommended Operating Conditions

Input Voltage Range, VIN . . . . . . . . . . . . . . . . . . . . . . . . 4V to 14V

Boost Inductor, L1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.3µH-10µH

Buck Inductor, L2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.3µH to 10µH

Thermal Resistance

6x6 QFN Package (Notes 1, 2) . . . . . .

32

8.6

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

Operating Junction Temperature . . . . . . . . . . . . . . -40°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.

NOTES:

1.

θ

Tech Brief TB379.

2. For

Electrical Specifications

unless otherwise stated.

PARAMETER

DESCRIPTION

CONDITIONS

MIN

TYP

MAX

UNIT

SUPPLY PINS

Supply Voltage

4

14

V

Quiescent Current

Enabled, no switching

4

5

mA

Disabled

2.7

3.5

mA

Switching Frequency

580

680

780

kHz

Reference Voltage

1.190

1.215

1.240

V

1.187

1.215

1.243

V

VLOR

Undervoltage Lockout Threshold

3.4

3.55

3.7

V

VLOF

Undervoltage Lockout Threshold

2.9

3.0

3.2

V

Thermal Shutdown

Temperature rising

150

°C

Thermal Shutdown Hysteresis

20

°C

LOGIC SIGNALS HVS, EN, CTL

Logic Input High

2.0

V

Logic Input Low

0.4

V

Pull-down Resistance

115

174

215

k

Ω

HVS, RSET

RSET

RSET Pull-down Resistance

HVS = HIGH

200

Ω

RSET Leakage Current

0.4

µA

DLIM

Min Duty Cycle

8.5

12

%

Max Duty Cycle

90

%

ISL97653A