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LTM8027
ABSOLUTE MAXIMUM RATINGS
(Note 1)
PIN CONFIGURATION
V IN Voltage ................................................................65V
BIAS1 ........................................................................15V
BIAS2 ........................................................................24V
SYNC, ADJ, R T , RUN, SS Voltages ..............................5V
Current into RUN Pin (Note 2)..................................1mA
V OUT , AUX .................................................................25V
Current Out of AUX ............................................. 200mA
Internal Operating Temperature (Note 3)
E-, I-Grade ......................................... –40°C to 125°C
MP-Grade .......................................... –55°C to 125°C
Maximum Soldering Temperature ......................... 245°C
Storage Temperature Range .................. –55°C to 125°C
11
10
9
8
AUX 7
BIAS1 6
SS 5
RUN 4
BIAS2 3
ADJ 2
1
TOP VIEW
A B C D E F G H J K L
RT SYNC
LGA PACKAGE
113-LEAD (15mm × 15mm × 4.32mm)
V OUT
BANK 1
GND
BANK 2
V IN
BANK 3
T JMAX = 125°C, θ JA = 12.2°C/W, θ JC(TOP) = 9.3°C/W,
θ JC(BOTTOM) = 3.6°C/W, θ JBOARD = 7.54°C/W
θ VALUES DETERMINED PER JESD 51-9
WEIGHT = 2.6 GRAMS
ORDER INFORMATION
LEAD FREE FINISH
TRAY
PART MARKING
PACKAGE DESCRIPTION
TEMPERATURE RANGE (Note 3)
LTM8027EV#PBF
LTM8027IV#PBF
LTM8027MPV#PBF
LTM8027EV#PBF
LTM8027IV#PBF
LTM8027MPV#PBF
LTM8027V
LTM8027V
LTM8027V
113-Lead (15mm × 15mm × 4.32mm) LGA –40°C to 125°C
113-Lead (15mm × 15mm × 4.32mm) LGA –40°C to 125°C
113-Lead (15mm × 15mm × 4.32mm) LGA –55°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
This product is only offered in trays. For more information go to: http://www.linear.com/packaging/
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 = 20V, BIAS1 = BIAS2 = 10V, RUN = 2V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V IN
V OUT
I OUT
Input DC Voltage
Maximum Output DC Voltage
Output DC Current
(Note 5)
0A < I OUT ≤ 4A, V IN = 48V
V IN ≤ 60V, V OUT = 12V, (Note 4)
l
4.5
0
24
60
4
V
V
A
V IN(START)
Minimum Start Voltage
7.5
V
? V OUT / ? V IN
? V OUT / ? I LOAD
V UVLO(RISING)
V UVLO(FALLING)
Line Regulation
Load Regulation
Input Undervoltage Lockout Threshold
(Rising)
Input Undervoltage Lockout Threshold
(Falling)
V OUT = 12V, 15V< V IN < 60V, I LOAD = 4A
V OUT = 12V, V IN = 24V, 0A < I LOAD ≤ 4A
(Note 5)
(Note 5)
0.2
0.2
4.6
3.7
%
%
V
V
8027fb
2
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