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LTM8047IY

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18
LTM8047
1
8047fc
For more information www.linear.com/LTM8047
V
IN
(V)
0
MAXIMUM V
OUT
LOAD (mA)
400
350
250
150
300
200
100
10 20
8047 TA01b
30
5 15 25
TYPICAL APPLICATION
FEATURES DESCRIPTION
3.1V
IN
to 32V
IN
Isolated
µModule DC/DC Converter
The LT M
®
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.
APPLICATIONS
n
Complete Switch Mode Power Supply
n
725VDC Isolation
n
Wide Input Voltage Range: 3.1V to 32V
n
Up to 440mA Output Current (V
OUT
= 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
n
Industrial Sensors
n
Industrial Switches
n
Ground Loop Mitigation
Maximum Load vs V
IN
725VDC ISOLATION
LTM8047
8047 TA01
V
IN
3.1V TO 29V
V
OUT
5V
280mA
(15V
IN
)
22µF
2.2µF
4.7µF
6.98k
V
OUT
V
IN
RUN
ADJ
SS
BIAS
GND
V
OUT
–
ISOLATION BARRIER
725V DC Isolated Low Noise µModule Regulator
LTM8047
2
8047fc
For more information www.linear.com/LTM8047
PIN CONFIGURATIONABSOLUTE MAXIMUM RATINGS
V
IN
, RUN, BIAS ........................................................32V
ADJ, SS .......................................................................5V
V
OUT
Relative to V
OUT
–
.............................................. 16V
(V
IN
– GND) + (V
OUT
– V
OUT
–
) ................................... 36V
BIAS Above V
IN
........................................................ 0.1V
GND to V
OUT
–
Isolation (Note 2) ........................725VDC
Maximum Internal Temperature (Note 3) .............. 125°C
Maximum Solder Temperature .............................. 250°C
(Note 1)
TOP VIEW
H
G
F
E
D
C
B
A
1 2 3 4 5 6 7
BANK 2
V
OUT
–
BANK 1
V
OUT
BANK 4
GND
BIAS
RUN
ADJ
SS
BANK 3
V
IN
BGA PACKAGE
45-LEAD (11.25mm × 9mm × 4.92mm)
T
JMAX
= 125°C, θ
JA
= 16°C/W, θ
JCbottom
= 4.1°C/W, θ
JCtop
= 15°C/W, θ
JB
= 4°C/W
WEIGHT = 1.1g, θ VALUES DETERMINED PER JEDEC 51-9, 51-12
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C, RUN = 12V (Note 3).
PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Input DC Voltage BIAS = V
IN
l
3.1 V
V
OUT
DC Voltage R
ADJ
= 12.4k
R
ADJ
= 6.98k
R
ADJ
= 3.16k
l
4.75
2.5
5
12
5.25
V
V
V
V
IN
Quiescent Current V
RUN
= 0V
Not Switching
850
1 µA
µA
V
OUT
Line Regulation 6V ≤ V
IN
≤ 31V, I
OUT
= 0.15A 1.7 %
PART NUMBER PAD OR BALL FINISH PART MARKING* PACKAGE
TYPE
MSL
RATING
TEMPERATURE RANGE
(Note 3)
DEVICE
CODE
LTM8047EY#PBF SAC305 (RoHS) LTM8047Y e1 BGA 3 –40°C to 125°C
LTM8047IY#PBF SAC305 (RoHS) LTM8047Y e1 BGA 3 –40°C to 125°C
LTM8047MPY#PBF SAC305 (RoHS) LTM8047Y e1 BGA 3 –55°C to 125°C
LTM8047MPY SnPb (63/37) LTM8047Y e0 BGA 3 –55°C to 125°C
ORDER INFORMATION
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
LTM8047
3
8047fc
For more information www.linear.com/LTM8047
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTM8047 isolation is tested at 725VDC for one second in each
polarity.
Note 3: The LTM8047E is guaranteed to meet performance specifications
from 0°C to 125°C. Specifications over the –40°C to 125°C internal
temperature range are assured by design, characterization and correlation
with statistical process controls. LTM8047I is guaranteed to meet
specifications over the full –40°C to 125°C internal operating temperature
range. The LTM8047MP is guaranteed to meet specifications over the
full –55°C to 125°C internal operating temperature range. Note that
the maximum internal temperature is determined by specific operating
conditions in conjunction with board layout, the rated package thermal
resistance and other environmental factors.
Note 4: This is the BIAS pin voltage at which the internal circuitry is
powered through the BIAS pin and not the integrated regulator. See BIAS
Pin Considerations for details.
PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OUT
Load Regulation 0.05A ≤ I
OUT
≤ 0.2A 1.5 %
V
OUT
Ripple (RMS) I
OUT
= 0.1A 20 mV
Input Short Circuit Current V
OUT
Shorted 30 mA
RUN Pin Input Threshold RUN Pin Rising 1.18 1.24 1.30 V
RUN Pin Current V
RUN
= 1V
V
RUN
= 1.3V
2.5
0.1
µA
µA
SS Threshold 0.7 V
SS Sourcing Current SS = 0V –10 µA
BIAS Current V
IN
= 12V, BIAS = 5V, I
LOAD1
= 100mA 8 mA
Minimum BIAS Voltage (Note 4) I
LOAD1
= 100mA 3.1 V
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C, RUN = 12V (Note 3).
ELECTRICAL CHARACTERISTICS
TYPICAL PERFORMANCE CHARACTERISTICS
Efficiency vs Load Efficiency vs Load Efficiency vs Load
V
OUT
CURRENT (mA)
0
EFFICIENCY (%)
90
70
80
60
50
100 300
8047 G01
500
200 400
12V
IN
24V
IN
V
OUT
= 2.5V
BIAS = 5V
V
OUT
CURRENT (mA)
0
EFFICIENCY (%)
90
70
80
60
50
100 300
8047 G02
400
200
12V
IN
24V
IN
V
OUT
= 3.3V
BIAS = 5V
V
OUT
CURRENT (mA)
0
EFFICIENCY (%)
90
70
80
60
50
100 300
8047 G03
350
200 25015050
12V
IN
24V
IN
V
OUT
= 5V
BIAS = 5V
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18

LTM8047IY

Mfr. #:
Buy LTM8047IY
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators [Tin-Lead SnPb BGA] 725VDC Isolated DC/DC Module Converter
Lifecycle:
New from this manufacturer.
Delivery:
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