LTM4637 datasheet(2/34 Pages) LINER

Part #	LTM4637

Description	25A DC/DC Step-Down 關Module Regulator

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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2 / 34 page

LTM4645

2

4645f

For more information www.linear.com/LTM4645

pin conFiguraTion

absoluTe MaxiMuM raTings

VIN, SVIN, HIZB .......................................... –0.3V to 16V

VOUT,......................................................... –0.3V to 3.5V

INTVCC, DRVCC, PGOOD, RUN ..................... –0.3V to 6V

MODE/PLLIN, TRACK/SS, VOSNS+, VOSNS–,

CLKOUT, COMPa, COMPb, VFB, PHASMD,

FREQ ....................................................–0.3V to INTVCC

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

Storage Temperature Range ...................... –55 to 125°C

Peak Solder Reflow Body Temperature ................. 250°C

TEMP+, TEMP–.......................................... –0.3V to 0.8V

(Note 1)

BGA PACKAGE

77-LEAD (9mm

× 15mm × 3.51mm)

1

VIN

DRVCC

VOUT

GND

L

K

J

H

G

F

E

D

C

B

A

2

3

4

GND

PWM

CLKOUT

TEST1

MODE/PLLIN

PHASMD

INTVCC

FREQ

SGND

TEST3

PGOOD

COMPb

GND

SVIN

HIZB

GND

RUN

5

6

7

TOP VIEW

VFB

VOSNS+

COMPa

TEST2

VOSNS–

TEMP–

TEMP+

TRACK/SS

SW

TJ(MAX) = 125°C, θJA = 9.5°C/W, θJCbottom = 4°C/W, θJCtop = 6.7°C/W, θJB = 4.5°C/W

θJA DERIVED FROM 95mm × 76mm PCB WITH SIX LAYERS; WEIGHT = 1.3g

θ VALUES DETERMINED PER JESD51-12

PART NUMBER

PAD OR BALL FINISH

PART MARKING*

PACKAGE

TYPE

MSL

RATING

TEMPERATURE RANGE

(Note 2)

DEVICE

FINISH CODE

LTM4645EY#PBF

SAC305 (RoHS)

LTM4645Y

e1

BGA

3

–40°C to 125°C

LTM4645IY#PBF

SAC305 (RoHS)

LTM4645Y

e1

BGA

3

–40°C to 125°C

LTM4645IY

SnPb (63/37)

LTM4645Y

e0

BGA

3

–40°C to 125°C

Consult Marketing for parts specified with wider operating temperature

ranges. *Device temperature grade is indicated by a label on the shipping

container. Pad or ball finish code is per IPC/JEDEC J-STD-609.

• Terminal Finish Part Marking:

www.linear.com/leadfree

• Recommended LGA and BGA PCB Assembly and Manufacturing

Procedures:

www.linear.com/umodule/pcbassembly

• LGA and BGA Package and Tray Drawings:

www.linear.com/packaging

orDer inForMaTion http://www.linear.com/product/LTM4645#orderinfo

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