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LT3572

3572fa

PIN CONFIGURATION

ABSOLUTE MAXIMUM RATINGS

VOUT Voltage .............................................................40V

OUTA, OUTA, OUTB, OUTB Voltage...........................40V

SW Voltage ...............................................................42V

RT, SS, SYNC ..............................................................2V

FB ...............................................................................3V

All Other Pins ............................................................10V

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

Operating Temperature Range (Note 2).... –40°C to 85°C

Storage Temperature Range................... –65°C to 125°C

(Note 1)

20 19 18 17 16

TOP VIEW

UF PACKAGE

20-LEAD (4mm

4mm) PLASTIC QFN

VIN

SYNC

GND

PGOOD

SHDNB

SHDNA

TJMAX = 125°C, θJA = 37°C/W

EXPOSED PAD (PIN 21) IS GND, MUST BE SOLDERED TO PCB

ORDER INFORMATION

ELECTRICAL CHARACTERISTICS

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Minimum Operating Voltage

●

2.5

2.7

VIN Quiescent Current

VFB = 1.3V

3.4

VIN Shutdown Current

VSHDN = VSHDNA = VSHDNB = 0V

μA

SHDN Pin Threshold

0.3

1.5

SHDNA Pin Threshold

0.3

1.5

SHDNB Pin Threshold

0.3

1.5

SHDN Pin Bias Current

VSHDN = 5V, VSHDNA = 0V, VSHDNB = 0V

VSHDN = 0V, VSHDNA = 0V, VSHDNB = 0V

0.1

μA

SHDNA Pin Bias Current

VSHDN = 0V, VSHDNA = 5V, VSHDNB = 0V

VSHDN = 0V, VSHDNA = 0V, VSHDNB = 0V

0.1

μA

SHDNB Pin Bias Current

VSHDN = 0V, VSHDNA = 0V, VSHDNB = 5V

VSHDN= 0V, VSHDNA = 0V, VSHDNB = 0V

0.1

μA

The ● denotes the speciﬁcations which apply over the full operating

temperature range, otherwise speciﬁcations are at TA = 25°C. VIN = 5V, VSHDNA= VSHDNB = VSHDN = 5V, unless otherwise noted.

LEAD FREE FINISH

TAPE AND REEL

PART MARKING

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LT3572EUF#PBF

LT3572EUF#TRPBF

3572

20-Lead (4mm

× 4mm) Plastic DFN

–40°C to 85°C

Consult LTC Marketing for parts speciﬁed with wider operating temperature ranges.

Consult LTC Marketing for information on non-standard lead based ﬁnish parts.

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/

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