LTM8067 datasheet(10/20 Pages) LINER

Il numero della parte	LTM8067

Spiegazioni elettronici	2.8VIN to 40VIN Isolated 關Module DC/DC Converter

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Produttore elettronici	LINER [Linear Technology]

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LTM8067

10

8067fc

For more information www.linear.com/LTM8067

OPERATION

The LTM8067 is a stand-alone isolated flyback switching

DC/DC power supply that can deliver up to 450mA of

output current at 5VOUT, 24VIN. This module provides a

regulated output voltage programmable via one external

resistor from 2.5V to 24V. The input voltage range of the

LTM8067 is 2.8V to 40V. Given that the LTM8067 is a fly-

back converter, the output current depends upon the input

and output voltages, so make sure that the input voltage

is high enough to support the desired output voltage and

load current. The Typical Performance Characteristics

section gives several graphs of the maximum load versus

VIN for several output voltages.

Asimplifiedblockdiagramisgiven.TheLTM8067contains

acurrentmodecontroller,powerswitchingelement,power

transformer, power Schottky diode and a modest amount

of input and output capacitance.

TheLTM8067hasagalvanicprimarytosecondaryisolation

rating of 2kVAC. For details please refer to the Isolation,

Working Voltage and Safely Compliance section. The

LTM8067 is a UL 60950 recognized component.

The RUN pin is used to turn on or off the LTM8067, dis-

connecting the output and reducing the input current to

1μA or less.

The LTM8067 is a variable frequency device. For a given

input and output voltage, the frequency decreases as the

load increases. For light loads, the current through the

internal transformer may be discontinuous.

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