Datasheet Linear Technology LTM8057

Manufacturer	Linear Technology
Series	LTM8057

3.1VIN to 31VIN Isolated µModule (Power Module) DC/DC Converter

Datasheets

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PDF, 266 Kb, Revision: A, File uploaded: Sep 25, 2017

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Prices

Packaging

	LTM8057EY#PBF	LTM8057IY	LTM8057IY#PBF	LTM8057MPY	LTM8057MPY#PBF
N	1	2	3	4	5
Package	11.25mm x 9mm x 4.92mm BGA Package Outline Drawing	11.25mm x 9mm x 4.92mm BGA Package Outline Drawing	11.25mm x 9mm x 4.92mm BGA Package Outline Drawing	11.25mm x 9mm x 4.92mm BGA Package Outline Drawing	11.25mm x 9mm x 4.92mm BGA Package Outline Drawing
Package Code	BGA	BGA	BGA	BGA	BGA
Package Index	05-08-1925	05-08-1925	05-08-1925	05-08-1925	05-08-1925
Pin Count	38	38	38	38	38

Parametrics

Parameters / Models	LTM8057EY#PBF	LTM8057IY	LTM8057IY#PBF	LTM8057MPY	LTM8057MPY#PBF
Architecture	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode
Demo Boards	DC1987A	DC1987A	DC1987A	DC1987A	DC1987A
Design Tools	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File
Export Control	no	no	no	no	no
Features	Isolated Module, UL60950 Recognized	Isolated Module, UL60950 Recognized	Isolated Module, UL60950 Recognized	Isolated Module, UL60950 Recognized	Isolated Module, UL60950 Recognized
Integrated Inductor	yes	yes	yes	yes	yes
Ishutdown, µA	1	1	1	1	1
Isupply, mA	0.85	0.85	0.85	0.85	0.85
Max Phases	1	1	1	1	1
Monolithic	yes	yes	yes	yes	yes
Number of Outputs	1	1	1	1	1
Operating Temperature Range, °C	0 to 85	-40 to 85	-40 to 85	-55 to 125	-55 to 125
Output Current, A	0.44	0.44	0.44	0.44	0.44
Synchronous	no	no	no	no	no
Topology	Flyback	Flyback	Flyback	Flyback	Flyback
Topology 1	Buck	Buck	Buck	Buck	Buck
Vin Max, V	31	31	31	31	31
Vin Min, V	3.1	3.1	3.1	3.1	3.1
Vout Max, V	12	12	12	12	12
Vout Maximum	12V	12V	12V	12V	12V
Vout Min, V	2.5	2.5	2.5	2.5	2.5
Vref Accuracy Over Temp, %	2.5	2.5	2.5	2.5	2.5

Eco Plan

	LTM8057EY#PBF	LTM8057IY	LTM8057IY#PBF	LTM8057MPY	LTM8057MPY#PBF
RoHS	Compliant	Not Compliant	Compliant	Not Compliant	Compliant

Design Notes

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Increasing Output Voltage and Current Range Using Series- Connected Isolated ОјModule Converters &mdash DN530
PDF, 172 Kb, File published: Jul 22, 2014
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Increasing Output Voltage and Current Range Using SeriesConnected Isolated ВµModule Converters вЂ“ Design Note 530
Jesus Rosales and Willie Chan
Linear TechnologyвЂ™s isolated ВµModule В® converters
are compact solutions for breaking ground loops.
These converters employ a flyback architecture whose
maximum output current varies with input voltage and
output voltage. Although their output voltage range
is limited to a maximum of 12V, one can increase the
output voltage or the output current range. The solution simply involves connecting the secondary side
of two or more isolated ВµModule converters in series.
The LTM В®8057 and LTM8058 UL60950-recognized
2kV AC isolated ВµModule converters will be used to
demonstrate this design approach, which can also be
applied to the LTM8046, LTM8047 and LTM8048. LetвЂ™s
assume an output of 10V at 300mA is desired from
a 20V input. Reviewing the maximum output current
curve from Figure 1, we notice that a single LTM8057
is insufficient to meet the output current requirement
under these conditions.
However, upon noticing that a single LTM8057 can
deliver 300mA at 5V from a 20V input, a solution becomes apparent. Since the output voltage is isolated
from the input, the outputs of two LTM8057s set at
5V can be connected in series to achieve a 10V output …

Articles

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Increasing Output Voltage and Current Range Using Series-Connected Isolated µModule Converters &mdash LT Journal
PDF, 624 Kb, File published: Oct 27, 2014
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Increasing Output Voltage and Current Range Using
Series-Connected Isolated ВµModule Converters
Jesus Rosales The LTMВ®8057 and LTM8058 UL60950recognized 2kV AC isolated ВµModule
converters are used here to demonstrate
this design approach, which can also
be applied to the LTM8046, LTM8047
and LTM8048. LetвЂ™s assume an output of 10V at 300m A is desired from a
20V input. Reviewing the maximum
output current curve from Figure 1, we VIN
5V TO 28V
GND + CIN1
10ВµF
35V C4
4.7ВµF
50V
C6
0.1ВµF
25V
R2
6.98k
1% Figure 2. Two LTM8057 ВµModule
regulators with outputs connected
in series, supporting a 10V, 300mA …

Model Line

Series: LTM8057 (5)

LTM8057EY#PBF LTM8057IY LTM8057IY#PBF LTM8057MPY LTM8057MPY#PBF

Manufacturer's Classification

µModule Solutions > µModule Regulators > Isolated µModule Converters | Extended Temperature (H & MP) µModule Regulators