LTM8048_15 Datasheet, PDF (1/20 Pages) Linear Technology – 3.1VIN to 32VIN Isolated Module DC/DC Converter with LDO Post Regulator

LTM8048
3.1V_IN to 32V_IN Isolated
µModule DC/DC Converter
with LDO Post Regulator
FEATURES
n _{Complete Switch Mode Power Supply}
n _{725VDC Isolation}
n _{Wide Input Voltage Range: 3.1V to 32V}
n _{VOUT1 Output:}
Up to 440mA (V_OUT1 = 2.5V, 24V_IN)
2.5V to 13V Output Range
n _{VOUT2 Low Noise Linear Post Regulator:}
Up to 300mA
1.2V to 12V Output Range
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^®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.
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
V_IN
3.1V TO 29V
2.2µF
4.7µF
6.19k
LTM8048
V_IN
RUN
BIAS
V_OUT1
V_OUT2
BYP
ADJ1
SS
GND
ADJ2
V_OUT–
725VDC ISOLATION
5.7V
V_OUT2
5V
22µF
162k _10µF
8048 TA01
Total Output Current vs V_IN
330
280
230
180
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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