Datasheet

LTM4618
2
4618fa
PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS
V
IN
, SW ...................................................... –0.3V to 28V
INTV
CC
, RUN, EXTV
CC
, PGOOD .................... –0.3V to 6V
COMP, V
FB
................................................. –0.3V to 2.7V
MODE/PLLIN, TK/SS,
FREQ ..................................................... –0.3V to INTV
CC
V
OUT
............................................................... 0.8V to 5V
Internal Operating Temperature Range
(Note 2) ..................................................–40°C to 125°C
Storage Temperature Range ................... –55°C to 125°C
Peak Package Body Temperature .......................... 250°C
(Note 1)
BCDEFGHJKLA
TK/SS COMP PGOODV
FB
INTV
CC
M
1
2
3
4
5
6
7
LGA PACKAGE
84-LEAD
(
15mm s 9mm s 4.32mm
)
TOP VIEW
V
IN
V
OUT
PGND
SW
EXTV
CC
FREQ
RUN
MODE/
PLLIN
SGND/PGND
Θ
JA
= 16°C/W, Θ
JCtop
= 15°C/W, Θ
JCbottom
= 4°C/W, WEIGHT = 2.3g,
θ
JB
+ θ
BA
= 16°C/W, θ
BA
= BOARD-TO-AMBIENT RESISTANCE,
θ VALUES DEFINED PER JESD51-12
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN(DC)
Input DC Voltage (Note 5)
l
4.5 26.5 V
V
OUT(DC)
Output Voltage Total Variation with
Line and Load
C
IN
= 10µF ×2, R
FB
= 28.0k
C
OUT
= 100µF ×3 X7R Ceramic
MODE/PLLIN = 0V, V
FREQ
= 2.4V
V
IN
= 6V to 26.5V, I
OUT
= 0A to 6A (Note 4)
l
2.476 2.52 2.557 V
Input Specifi cations
V
IN(UVLO)
Undervoltage Lockout Thresholds V
INTVCC
Rising
V
INTVCC
Falling
2.00
1.85
2.20
2.00
2.35
2.15
V
V
I
INRUSH(VIN)
Input Inrush Current at Start-Up I
OUT
= 0A, C
IN
= 10µF ×2, C
OUT
= 100µF ×3
V
OUT
= 2.5V
V
IN
= 12V
V
IN
= 26.5V
0.3
0.2
A
A
LEAD FREE FINISH PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTM4618EV#PBF LTM4618V 84-Lead (15mm × 9mm × 4.32mm) LGA –40°C to 125°C
LTM4618IV#PBF LTM4618V 84-Lead (15mm × 9mm × 4.32mm) LGA –40°C to 125°C
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed by a label on the shipping container.
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/
ORDER INFORMATION
ELECTRICAL CHARACTERISTICS
The l denotes the specifi cations which apply over the full internal
operating temperature range, otherwise specifi cations are at T
A
= 25°C (Note 2), V
IN
= 12V, per typical application in Figure 21.