LTM8045 datasheet(2/36 Pages) LINER

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LTM4644/LTM4644-1

4644fe

For more information www.linear.com/LTM4644

ABSOLUTE MAXIMUM RATINGS

VIN, SVIN (Per Channel).............................. –0.3V to 15V

VOUT (Per Channel) (Note 3) ............–0.3V to SVIN or 6V

RUN (Per Channel)..................................... –0.3V to 15V

INTVCC (Per Channel) ............................... –0.3V to 3.6V

PGOOD, MODE, TRACK/SS,

FB (Per Channel)...................................–0.3V to INTVCC

CLKOUT (Note 3), CLKIN.......................–0.3V to INTVCC

Internal Operating Temperature Range

(Notes 2, 5)............................................ –40°C to 125°C

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

Peak Solder Reflow Body Temperature ................. 245°C

(Note 1)

BGA PACKAGE

77-LEAD (9mm × 15mm × 5.01mm)

TOP VIEW

VOUT1

SVIN1

MODE1

RUN1

COMP1

INTVCC1

GND

PGOOD2 PGOOD1

INTVCC2

PGOOD3 TEMP

INTVCC3

PGOOD4 CLKOUT

FB1

TRACK/SS1

GND

CLKIN

TRACK/SS2

FB2

RUN2

SGND

TRACK/SS3

FB3

TRACK/SS4

INTVCC4

RUN4

MODE2

SVIN2

COMP2

RUN3

FB4

MODE3

SVIN3

COMP3

COMP4

MODE4

SVIN4

VIN4

VIN1

GND

VIN3

VIN2

VOUT4

VOUT3

VOUT2

TJMAX = 125°C, θJCtop = 17°C/W, θJCbottom = 2.75°C/W,

θJB + θBA = 11°C/W, θJA = 10°C/W

θ VALUES PER JESD 51-12

WEIGHT = 1.9g

PIN CONFIGURATION

PART NUMBER

PAD OR BALL FINISH

PART MARKING*

PACKAGE

TYPE

MSL

RATING

TEMPERATURE RANGE

(SEE NOTE 2)

DEVICE

FINISH CODE

LTM4644EY#PBF

SAC305 (RoHS)

LTM4644Y

BGA

–40°C to 125°C

LTM4644IY#PBF

SAC305 (RoHS)

LTM4644Y

BGA

–40°C to 125°C

LTM4644MPY#PBF

SAC305 (RoHS)

LTM4644Y

BGA

–55°C to 125°C

LTM4644IY

SnPb (63/37)

LTM4644Y

BGA

–40°C to 125°C

LTM4644MPY

SnPb (63/37)

LTM4644Y

BGA

–55°C to 125°C

LTM4644EY-1#PBF

SAC305 (RoHS)

LTM4644Y-1

BGA

–40°C to 125°C

LTM4644IY-1#PBF

SAC305 (RoHS)

LTM4644Y-1

BGA

–40°C to 125°C

LTM4644IY-1

SnPb (63/37)

LTM4644Y-1

BGA

–40°C to 125°C

Note: The LTM4644-1 does not include the internal top feedback resistor.

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 Markings:

www.linear.com/leadfree

• Recommended LGA and BGA PCB Assembly and Manufacturing

Procedures:

www.linear.com/umodule/pcbassembly

• Package and Tray Drawings:

www.linear.com/packaging

ORDER INFORMATION http://www.linear.com/product/LTM4644#orderinfo

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