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LT3513

3513fa

ELECTRICAL CHARACTERISTICS

(Note 1)

VIN, LDOPWR Voltage ...............................................32V

UVLO Voltage............................................................32V

SW2, SW3, SW4 Voltage ..........................................40V

E3 Pin Voltage...........................................................40V

VON, VONSINK Voltage ................................................40V

PGOOD Voltage.........................................................40V

D4 Voltage ........................................................ 1V, –40V

BOOST Voltage .........................................................37V

BOOST Over SW1 .......................................................8V

SENSE+, SENSE– Voltage..........................................10V

VON_CLK Voltage........................................................10V

BIAS, BD Voltage ......................................................10V

CT Pin Voltage.............................................................5V

RUN-SS1, RUN-SS2, RUN-SS3/4 Voltage ..................5V

FB1, FB2, FB3, FB5 Voltage.........................................5V

NFB4 Voltage ...................................................... 5V, –5V

VC1, VC2, VC3, VC4 Voltage ..........................................5V

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

Operating Temperature Range (Note 2).. –40°C to 125°C

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

The

l denotes the speciﬁcations which apply over the full operating

temperature range, otherwise speciﬁcations are at TA = 25°C. VIN = 12V, BIAS = 3V, unless otherwise noted.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Minimum Input Voltage

4.5

Quiescent Current

Not Switching

VRUNSS1 = 0V

7.5

μA

RUN-SS1, RUN-SS2, RUN-SS3/4 Pin Current

RUN-SS1= RUN-SS2 = RUN-SS3

= RUN-SS4 = 0.4V

2μA

RUN-SS1, RUN-SS2, RUN-SS3/4 Threshold

0.8

BIAS Pin Voltage to Begin RUN-SS2, RUN-SS3/4

2.25

2.7

BIAS Pin Current

BIAS = 3.1V, All Switches Off

16.5

PIN CONFIGURATION

13 14 15 16

TOP VIEW

UHF PACKAGE

38-LEAD (5mm

7mm) PLASTIC QFN

17 18 19

38 37 36 35 34 33 32

FB5

VC1

RUN-SS3/4

FB3

RUN-SS2

SW3

VON

VONSINK

VON_CLK

PGOOD

VC3

SENSE+

SENSE–

BIAS

BOOST

LDOPWR

SW4

NFB4

RUN-SS1

VC4

VC2

TJMAX = 125°C, θJA = 34°C/W, θJC = 1°C/W

EXPOSED PAD (PIN 39) IS GND, MUST BE SOLDERED TO PCB

ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING*

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LT3513EUHF#PBF

LT3513EUHF#TRPBF

3513

38-Lead (5mm

× 7mm) Plastic QFN

–40°C to 125°C

LT3513IUHF#PBF

LT3513IUHF#TRPBF

3513

38-Lead (5mm

× 7mm) Plastic QFN

–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/

ABSOLUTE MAXIMUM RATINGS

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