DC/DC Converter. LTM8047 Datasheet

LTM8047 Converter. Datasheet pdf. Equivalent


Part LTM8047
Description uModule DC/DC Converter
Feature LTM8047 3.1VIN to 32VIN Isolated µModule DC/DC Converter FEATURES n Complete Switch Mode Power Sup.
Manufacture Linear Technology
Datasheet
Download LTM8047 Datasheet


LTM8047 3.1VIN to 32VIN Isolated µModule DC/DC Converter FE LTM8047 Datasheet
Recommendation Recommendation Datasheet LTM8047 Datasheet




LTM8047
LTM8047
3.1VIN to 32VIN Isolated
µModule DC/DC Converter
FEATURES
n Complete Switch Mode Power Supply
n 725VDC Isolation
n Wide Input Voltage Range: 3.1V to 32V
n Up to 440mA Output Current (VOUT = 2.5V)
n 2.5V to 12V Output Voltage
n Current Mode Control
n Programmable Soft-Start
n User Configurable Undervoltage Lockout
n SnPb or RoHS Compliant Finish
n Low Profile (11.25mm × 9mm × 4.92mm) Surface
Mount BGA Package
APPLICATIONS
n Industrial Sensors
n Industrial Switches
n Ground Loop Mitigation
DESCRIPTION
The LTM®8047 is an isolated flyback µModule DC/DC
converter. The LTM8047 has an isolation rating of 725VDC.
For a similar product with LDO post regulator, see the
LTM8048. Included in the package are the switching
controller, power switches, transformer, and all support
components. Operating over an input voltage range of 3.1V
to 32V, the LTM8047 supports an output voltage range of
2.5V to 12V, set by a single resistor. Only output, input,
and bypass capacitors are needed to finish the design.
Other components may be used to control the soft-start
control and biasing.
The LTM8047 is packaged in a thermally enhanced, com-
pact (11.25mm × 9mm × 4.92mm) over-molded ball grid
array (BGA) package suitable for automated assembly by
standard surface mount equipment. The LTM8047 is avail-
able with SnPb (BGA) or RoHS compliant terminal finish.
L, LT, LTC, LTM, Linear Technology, the Linear logo and µModule are registered trademarks of
Linear Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
725V DC Isolated Low Noise µModule Regulator
VIN
3.1V TO 29V
2.2µF
4.7µF
6.98k
VIN
RUN
BIAS
LTM8047
VOUT
ADJ
SS
GND VOUT–
725VDC ISOLATION
VOUT
5V
280mA
(15VIN)
22µF
8047 TA01
400
350
300
250
200
150
100
0
Maximum Load vs VIN
5 10 15 20 25 30
VIN (V)
8047 TA01b
For more information www.linear.com/LTM8047
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1



LTM8047
LTM8047
ABSOLUTE MAXIMUM RATINGS
(Note 1)
VIN, RUN, BIAS .........................................................32V
ADJ, SS........................................................................5V
VOUT Relative
(VIN – GND) +
t(oVVOOUUT T..V..O..U..T...)........................................................................3166VV
BIAS
GND
tAobVoOvUeTV–INIs..o..l.a..t.i.o..n...(.N..o..t..e..2..)....................................................7..2..5. V0.D1VC
Maximum Internal Temperature (Note 3)............... 125°C
Maximum Solder Temperature............................... 250°C
PIN CONFIGURATION
TOP VIEW
A
B
C
D BVAONUKT–2
E
F
BANK 3
VIN RUN
G
BANK 1
VOUT
BANK 4
GND
ADJ
H
BIAS SS
1234567
BGA PACKAGE
45-LEAD (11.25mm × 9mm × 4.92mm)
TJMAX = 125°C, θJA = 16°C/W, θJCbottom = 4.1°C/W, θJCtop = 15°C/W, θJB = 4°C/W
WEIGHT = 1.1g, θ VALUES DETERMINED PER JEDEC 51-9, 51-12
ORDER INFORMATION
PART NUMBER
LTM8047EY#PBF
LTM8047IY#PBF
LTM8047MPY#PBF
LTM8047MPY
PAD OR BALL FINISH
SAC305 (RoHS)
SAC305 (RoHS)
SAC305 (RoHS)
SnPb (63/37)
PART MARKING*
DEVICE
CODE
LTM8047Y
e1
LTM8047Y
e1
LTM8047Y
e1
LTM8047Y
e0
PACKAGE
TYPE
BGA
BGA
BGA
BGA
MSL
RATING
3
3
3
3
TEMPERATURE RANGE
(Note 3)
–40°C to 125°C
–40°C to 125°C
–55°C to 125°C
–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
• BGA Package and Tray Drawings:
www.linear.com/packaging
E LECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C, RUN = 12V (Note 3).
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Minimum Input DC Voltage
VOUT DC Voltage
VIN Quiescent Current
BIAS = VIN
RADJ = 12.4k
RADJ = 6.98k
RADJ = 3.16k
VRUN = 0V
Not Switching
l 3.1
2.5
l 4.75 5 5.25
12
1
850
V
V
V
V
µA
µA
VOUT Line Regulation
6V ≤ VIN ≤ 31V, IOUT = 0.15A
1.7 %
8047fc
2 For more information www.linear.com/LTM8047







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