TPS40055-EP

www.ti.com

SGLS310D – JULY 2005 – REVISED FEBRUARY 2012

ABSOLUTE MAXIMUM RATINGS

over operating free-air temperature range (unless otherwise noted)

(1)

VALUE / UNIT

VIN

45 V

VFB, SS, SYNC

–0.3 V to 6 V

Input voltage range

SW

–0.3 V to 45 V

SW, transient < 50 ns

–2.5 V

–0.3 V to 11 V

Output voltage range

COMP, RT, SS

–0.3 V to 6 V

Input current

KFF

5 mA

Output current

RT

200 µA

Operating junction temperature range

–55°C to 140°C

–55°C to 150°C

Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds

260°C

Thermal resistance junction-to-case

26.6°C/W

36.5°C/W

2.1°C/W

0.848°C/W

(1)

Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings

only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating

conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

(2)

Long-term high-temperature storage and/or extended use at maximum recommended operating conditions may result in reduced overall

device life. See http://www.ti.com/ep_quality for additional information on enhanced plastic packaging.

(3)

See technical brief SLMA002 - PowerPAD Thermally Enhanced Package(http://www-s.ti.com/sc/techlit/slma002).

(4)

Tested in accordance with the thermal metric definitions of EIA/JESD51-5.

RECOMMENDED OPERATING CONDITIONS

MIN

NOM

MAX

UNIT

Input voltage

8

40

V

Operating free-air temperature

–55

125

°C

ELECTRICAL CHARACTERISTICS

(unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX UNIT

INPUT SUPPLY

Input voltage range, VIN

8

40

V

OPERATING CURRENT

Quiescent current

Output drivers not switching, VFB

≥

1.5

3.3

mA

0.75 V

BP5

Output voltage

4.7

5

5.3

V

Accuracy

8 V

465

520

585

kHz

2

V

High-level input voltage, SYNC

2

5

V

Low-level input voltage, SYNC

0.8

V

Input current, SYNC

5

11

µA

Pulse width, SYNC

50

ns

RT voltage

2.37

2.5

2.59

V

(1)

(2)

Ensured by design. Not production tested.

Copyright © 2005–2012, Texas Instruments Incorporated

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