LTC3856IUH-TRPBF datasheet(2/40 Pages) LINER

Part #	LTC3856IUH-TRPBF

Description	2-Phase Synchronous Step-Down DC/DC Controller with Diffamp

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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LTC3856

3856f

Input Supply Voltage (VIN)......................... 40V to –0.3V

Topside Driver Voltages (BOOSTn) ............ 46V to –0.3V

Switch Voltage (SWn)................................... 40V to –5V

INTVCC, RUN, PGOOD, EXTVCC,

(BOOSTn – SWn)......................................... 6V to –0.3V

SENSEn Voltages ...................................... 5.5V to –0.3V

MODE, PLLIN, ILIM, TK/SS, AVP,

FREQ, ISET Voltages............................. INTVCC to –0.3V

DIFFP, DIFFN, DIFFOUT, PHASMD,

ITEMP Voltages..................................... INTVCC to –0.3V

(Note 1)

absoluTe MaxiMuM raTings

1

2

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TOP VIEW

FE PACKAGE

38-LEAD PLASTIC TSSOP

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33

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FREQ

RUN

SENSE1+

SENSE1–

NC

TK/SS

VFB

ITH

SGND

AVP

ITEMP

PHASMD

SENSE2+

SENSE2–

DIFFP

DIFFN

DIFFOUT

ISET

ILIM

PLLIN

CLKOUT

SW1

TG1

NC

BOOST1

PGND1

BG1

VIN

INTVCC

EXTVCC

BG2

PGND2

NC

BOOST2

TG2

SW2

PGOOD

MODE

39

TJMAX = 125°C, θJA = 25°C/W

EXPOSED PAD (PIN 39) IS SGND/PGND, MUST BE SOLDERED TO PCB

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33

31 30 29 28 27 26 25

9 10 11 12

TOP VIEW

UH PACKAGE

32-LEAD (5mm 5mm) PLASTIC QFN

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5

4

3

2

1

TK/SS

VFB

ITH

AVP

ITEMP

PHASMD

SENSE2+

SENSE2–

BOOST1

BG1

VIN

INTVCC

EXTVCC

BG2

BOOST2

TG2

TJMAX = 125°C, θJA = 34°C/W

EXPOSED PAD (PIN 33) IS SGND/PGND, MUST BE SOLDERED TO PCB

pin conFiguraTion

ITH, VFB Voltages................................... INTVCC to –0.3V

INTVCC Peak Output Current ................................100mA

Operating Junction Temperature Range

(Notes 2, 3)............................................ –40°C to 125°C

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

Reflow Peak Body Temperature (UH Package)...... 260°C

Lead Temperature (Soldering, 10 sec.)

FE Package............................................................ 300°C

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LTC3856IUH-TRPBF Datasheet(PDF) 2 Page - Linear Technology

LTC3856IUH-TRPBF Datasheet(HTML) 2 Page - Linear Technology

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