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LTM8048
3.1V IN to 32V IN Isolated
μModule DC/DC Converter
with LDO Post Regulator
Complete Switch Mode Power Supply
725VDC Isolation
Wide Input Voltage Range: 3.1V to 32V
V OUT1 Output:
V OUT2 Low Noise Linear Post Regulator:
Current Mode Control
Programmable Soft-Start
User Configurable Undervoltage Lockout
SnPb or RoHS Compliant Finish
Low Profile (11.25mm × 9mm × 4.92mm) Surface
FEATURES
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Up to 440mA (V OUT1 = 2.5V, 24V IN )
2.5V to 13V Output Range
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Up to 300mA
1.2V to 12V Output Range
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Mount BGA Package
APPLICATIONS
DESCRIPTION
The LTM ? 8048 is an isolated flyback μModule DC/DC
converter with LDO post regulator. The LTM8048 has an
isolation rating of 725VDC. 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 LTM8048 supports an output
voltage range of 2.5V to 13V, set by a single resistor. There
is also a linear post regulator whose output voltage is ad-
justable from 1.2V to 12V as 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 LTM8048 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 LTM8048 is avail-
able with SnPb (BGA) or RoHS compliant terminal finish.
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Industrial Sensors
Industrial Switches
Ground Loop Mitigation
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
330
Total Output Current vs V IN
V IN
3.1V TO 29V
4.7μF
2.2μF
6.19k
V IN
RUN
BIAS
ADJ1
SS
LTM8048
V OUT1
V OUT2
BYP
ADJ2
5.7V
162k 10μF
22μF
V OUT2
5V
280
230
180
GND V OUT–
725VDC ISOLATION
8048 TA01
130
80
0
5
10
15
20
25
30
INPUT VOLTAGE (V)
8048 TA01b
8048ff
For more information www.linear.com/LTM8048
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