TPS40090-Q1

www.ti.com

SLUS845C

– JUNE 2008 – REVISED MAY 2011

ABSOLUTE MAXIMUM RATING

over operating free-air temperature range unless otherwise noted

(1)

EN/SYNC, VIN,

16.5 V

Input voltage range

CS1, CS2, CS3, CS4, CSCN, DROOP, FB, GNDS, ILIM, VOUT

–0.3 V to 6 V

Output voltage range

REF, COMP, DIFFO, PGOOD, SS, RT, PWM1, PWM2, PWM3, PWM4, BP5

–0.3 V to 6 V

Operating virtual-junction temperature range

–40°C to 125°C

Storage temperature

–65°C to 150°C

ESD

Electrostatic discharge protection, Human-Body Model (HBM)

1500 V

(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.

RECOMMENDED OPERATING CONDITIONS

MIN

MAX

UNIT

Input voltage

4.5

15

V

Operating virtual-junction temperature

–40

125

°C

ELECTRICAL CHARACTERISTICS

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

INPUT SUPPLY

Operating voltage range, VIN

4.5

15

UVLO

4.25

4.45

V

4.1

4.35

Shutdown current, VIN

2

10

μA

Quiescent current switching

Four channels, 400 kHz each, no load

4

6

mA

OSCILLATOR/SYNCHRONIZATION

Phase frequency accuracy

350

415

455

Four channels

100

1200

kHz

Four channels

800

9600

Four channels

V

PWM

4-phase operation

87.5

Maximum duty cycle per channel

%

2- and 3-phase operation

83.3

0

%

50

100

ns

ERROR AMPLIFIER

Feedback input voltage

0.690

0.700

0.707

V

Feedback input bias current

25

150

nA

High-level output voltage

2.5

2.9

V

low-level output voltage

0.5

0.8

5

MHz

90

dB

SOFT START

Soft-start source current

3.5

5

6

μA

Soft-start clamp voltage

0.95

1.00

1.05

V

(1)

Specified by design

Copyright

© 2008–2011, Texas Instruments Incorporated

3