Datasheet
LTM8028
2
8028fa
For more information www.linear.com/LTM8028
absoluTe MaxiMuM raTings
V
IN
............................................................................40V
V
OUT
............................................................................ 3V
RUN, SS, SYNC .......................................................... 6V
Current Into RUN ..................................................100μA
V
OB
, V
O0
, V
O1
, V
O2
, TEST,
PGOOD, SENSEP, MARGA ...........................................4V
RT, BKV, I
MAX
.............................................................3V
Maximum Operating Junction Temperature
(Note 2) ................................................................. 125°C
Maximum Body Reflow Temperature .................... 240°C
Maximum Storage Temperature ............................ 125°C
(Notes 1, 4)
elecTrical characTerisTics
The l denotes the specifications which apply over the full internal
operating temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 12V, RUN = 3V unless otherwise noted. (Note 2)
pin conFiguraTion
A
1
2
3
4
5
6
7
8
9
10
11
B C D E F
TOP VIEW
BANK 1 BANK 2
BANK 3
SENSEP
BANK 4
RUNRT
SS SYNC
I
MAX
V
IN
GND
BKV
V
OUT
G H J K L
TEST
MARGA
PGOOD
V
O0
V
O1
V
O2
V
OB
BGA PACKAGE
114 PADS (15mm × 15mm × 4.92mm)
T
JMAX
= 125°C, θ
JA
= 17.7°C/W,
θ
JB
= 6.0°C/W, θ
JCtop
= 15°C/W,
θ
JCbottom
= 6.0°C/W
θ VALUES DETERMINED PER JEDEC 51-9, 51-12
WEIGHT = 1.8 GRAMS
PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Input Voltage 6 V
Output DC Voltage
l
l
l
l
l
0.788
0.985
1.182
1.477
1.773
0.8
1.0
1.2
1.5
1.8
0.812
1.015
1.218
1.523
1.827
V
V
V
V
V
Output DC Current V
OUT
= 1.8V 5 A
orDer inForMaTion
PART NUMBER PAD OR BALL FINISH PART MARKING* PACKAGE
TYPE
MSL
RATING
TEMPERATURE RANGE
(Note 2)
DEVICE FINISH CODE
LTM8028EY#PBF
SAC305 (RoHS) LTM8028Y e1 BGA 3 –40°C to 125°C
LTM8028IY#PBF SAC305 (RoHS) LTM8028Y e1 BGA 3 –40°C to 125°C
LTM8028IY SnPb (63/37) LTM8028Y e0 BGA 3 –40°C to 125°C
LTM8028MPY#PBF SAC305 (RoHS) LTM8028Y e1 BGA 3 –55°C to 125°C
LTM8028MPY SnPb (63/37) LTM8028Y e0 BGA 3 –55°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.
• Pb-free and Non-Pb-free Part Markings:
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