LT3575_15 datasheet(2/24 Pages) LINER

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LT3575

3575f

ABSOLUTE MAXIMUM RATINGS

SW ............................................................................60V

VIN, SHDN/UVLO, RFB, BIAS.....................................40V

SS, VC, TC, RREF, RILIM ..............................................5V

Maximum Junction Temperature .......................... 125°C

Operating Junction Temperature Range (Note 2)

LT3575E, LT3575I.............................. –40°C to 125°C

Storage Temperature Range .................. –65°C to 150°C

ORDER INFORMATION

ELECTRICAL CHARACTERISTICS The l denotes the speciﬁcations which apply over the full operating

temperature range, otherwise speciﬁcations are at TA = 25°C. VIN = 12V, unless otherwise noted.

LEAD FREE FINISH

TAPE AND REEL

PART MARKING*

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LT3575EFE#PBF

LT3575EFE#TRPBF

3575FE

16-Lead Plastic TSSOP

–40°C to 125°C

LT3575IFE#PBF

LT3575IFE#TRPBF

3575FE

16-Lead Plastic TSSOP

–40°C to 125°C

Consult LTC Marketing for parts speciﬁed with wider operating temperature ranges. *The temperature grade is identiﬁed by a label on the shipping container.

For more information on lead free part marking, go to: http://www.linear.com/leadfree/

For more information on tape and reel speciﬁcations, go to: http://www.linear.com/tapeandreel/

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Input Voltage Range

340

Quiescent Current

SS = 0V

VSHDN/UVLO = 0V

4.5

μA

Soft-Start Current

SS = 0.4V

μA

SHDN/UVLO Pin Threshold

UVLO Pin Voltage Rising

1.15

1.22

1.32

SHDN/UVLO Pin Hysteresis Current

VUVLO = 1V

2.2

2.8

3.2

μA

Soft-Start Threshold

0.7

Maximum Switching Frequency

1000

kHz

Switch Current Limit

RILIM = 10k

2.8

3.5

4.2

Minimum Current Limit

VC = 0V

400

Switch VCESAT

ISW = 0.5A

125

RREF Voltage

VIN = 3V

1.21

1.20

1.23

1.25

1.26

RREF Voltage Line Regulation

3V < VIN < 40V

0.01

0.03

%/ V

RREF Pin Bias Current

(Note 3)

100

600

PIN CONFIGURATION

FE PACKAGE

16-LEAD PLASTIC TSSOP

TOP VIEW

GND

TEST

RREF

RFB

VIN

BIAS

SHDN/UVLO

RILIM

GND

TJMAX = 125°C, θJA = 38°C/W, θJC = 10°C/W

EXPOSED PAD (PIN 17) IS GND, MUST BE CONNECTED TO GND

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