Datasheet
LTM4637
2
4637fc
For more information www.linear.com/LTM4637
pin conFiguraTion
absoluTe MaxiMuM raTings
V
IN
............................................................. –0.3V to 22V
V
OUT
............................................................. –0.3V to 6V
INTV
CC
, V
OUT_LCL
, PGOOD, EXTV
CC
............ –0.3V to 6V
MODE_PLLIN, f
SET
, TRACK/SS,
V
OSNS
–
, V
OSNS
+
, DIFF_OUT ...................–0.3V to INTV
CC
V
FB,
COMP (Note 7) ................................. –0.3V to 2.7V
RUN (Note 5) ............................................... –0.3V to 5V
(Note 1)
LGA PACKAGE
133-LEAD (15mm × 15mm × 4.32mm)
V
IN
1 2 3 4 5 6 7 8 109 11 12
B
C
D
E
F
G
H
J
K
L
A
M
INTV
CC
f
SET
COMPTRACK/SS
MODE_PLLIN
INTV
CC
TOP VIEW
SGND
V
OUT
V
IN
GND
EXTV
CC
V
FB
PGOOD
PGOOD
TEMP
RUN
V
OSNS
+
DIFF_OUT
V
OUT_LCL
V
OSNS
–
BGA PACKAGE
133-LEAD (15mm × 15mm × 4.92mm)
V
IN
1 2 3 4 5 6 7 8 109 11 12
B
C
D
E
F
G
H
J
K
L
A
M
INTV
CC
f
SET
COMPTRACK/SS
MODE_PLLIN
INTV
CC
TOP VIEW
SGND
V
OUT
V
IN
GND
EXTV
CC
V
FB
PGOOD
PGOOD
TEMP
RUN
V
OSNS
+
DIFF_OUT
V
OUT_LCL
V
OSNS
–
T
J(MAX)
= 125°C, θ
JA
= 9.5°C/W, θ
JCbottom
= 4°C/W, θ
JCtop
= 6.7°C/W, θ
JB
= 4.5°C/W
θ
JA
DERIVED FROM 95mm × 76mm PCB WITH 4 LAYERS; WEIGHT = 2.9g
θ VALUES DETERMINED PER JESD51-12
T
J(MAX)
= 125°C, θ
JA
= 10.4°C/W, θ
JCbottom
= 4.6°C/W, θ
JCtop
= 6.7°C/W, θ
JB
= 5.3°C/W
θ
JA
DERIVED FROM 95mm × 76mm PCB WITH 4 LAYERS; WEIGHT = 3.1g
θ VALUES DETERMINED PER JESD51-12
TEMP ........................................................ –0.3V to 0.8V
INTV
CC
Peak Output Current (Note 6) ..................100mA
Internal Operating Temperature Range
(Note 2) .................................................. –40°C to 125°C
Storage Temperature Range .................. –55°C to 125°C
Reflow (Peak Body) Temperature .......................... 245°C
orDer inForMaTion
PART NUMBER PAD OR BALL FINISH PART MARKING* PACKAGE
TYPE
MSL
RA
TING
TEMPERATURE RANGE
(Note 2)
DEVICE FINISH CODE
LTM4637EV#PBF Au (RoHS) LTM4637V e4 LGA 4 –40°C to 125°C
LTM4637IV#PBF Au (RoHS) LTM4637V e4 LGA 4 –40°C to 125°C
LTM4637EY#PBF SAC305 (RoHS) LTM4637Y e1 BGA 4 –40°C to 125°C
LTM4637IY#PBF SAC305 (RoHS) LTM4637Y e1 BGA 4 –40°C to 125°C
LTM4637IY SnPb (63/37) LTM4637Y e0 BGA 4 –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 T
ray Drawings:
www.linear.com/packaging