LTM8068 Datasheet, PDF (1/20 Pages) Linear Technology – 2.8VIN to 40VIN Isolated μModule DC/DC Converter with LDO Post Regulator

FEATURES
n _{2kVAC Isolated µModule Converter}
n _{UL60950 Recognized File E464570}
n _{Wide Input Voltage Range: 2.8V to 40V}
n _{VOUT1 Output:}
Up to 450mA (V_IN = 24V_, V_OUT1 = 5V)
2.5V to 18V Output Range
n _{VOUT2 Low Noise Linear Post Regulator:}
Up to 300mA
1.2V to 18V Output Range
n _{Current Mode Control}
n _{User Configurable Undervoltage Lockout}
n _{Low Profile (9mm × 11.25mm × 4.92mm)}
BGA Package
APPLICATIONS
n _{Industrial Sensors}
n _{Industrial Switches}
n _{Ground Loop Mitigation}
LTM8068
2.8V_IN to 40V_IN Isolated
µModule DC/DC Converter
with LDO Post Regulator
DESCRIPTION
The LTM^®8068 is a 2kV AC isolated flyback µModule^®
(power module) DC/DC converter with LDO post regulator.
Included in the package are the switching controller, power
switches, transformer, LDO, and all support components.
Operating over an input voltage range of 2.8V to 40V, the
LTM8068 supports an output voltage range of 2.5V to
18V, set by a single resistor. There is also a linear post
regulator whose output voltage is adjustable from 1.2V
to 18V as set by a single resistor. Only output and input
capacitors are needed to finish the design.
The LTM8068 is packaged in a thermally enhanced, com-
pact (9mm × 11.25mm × 4.92mm) overmolded ball grid
array (BGA) package suitable for automated assembly
by standard surface mount equipment. The LTM8068 is
available with SnPb 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
2kV AC Isolated Low Noise µModule Regulator
V_IN
2.8V TO 38V
V_IN
•
RUN
2.2µF
•
FB1
7.32k
GND
LOW
NOISE
LDO
V_OUT1
V_OUT2
FB2
V_OUTN
(5.6V)
22µF
V_OUT2
5V
300mA MAX
162k
10µF
LTM8068
8068 TA01a
PIN BYP IS NOT USED IN THIS SCHEMATIC
Total Output Current vs V_IN
350
250
150
50
0
9
18
27
36
V_IN (V)
8068 TA01
For more information www.linear.com/LTM8068
8068fa
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