Zakładka z wyszukiwarką danych komponentów |
|
LTM8046 Arkusz danych(PDF) 9 Page - Linear Technology |
|
LTM8046 Arkusz danych(HTML) 9 Page - Linear Technology |
9 / 20 page LTM8046 9 8046fb For more information www.linear.com/LTM8046 block DiagraM VIN RUN FB *DO NOT ALLOW BIAS VOLTAGE TO EXCEED VIN GND 0.1µF 1µF VOUT CURRENT MODE CONTROLLER VOUT– SS BIAS* 8046 BD • • operaTion The LTM8046 is a stand-alone isolated flyback switching DC/DC µModule converter that can deliver over 700mA of output current. This module provides a regulated output voltage programmable via one external resistor from 1.8V to 12V. The input voltage range of the LTM8046 is 3.1V to 31V. Given that the LTM8046 is a flyback 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.TheLTM8046contains acurrentmodecontroller,powerswitchingelement,power transformer, power Schottky diode, a modest amount of input and output capacitance. The LTM8046 has a galvanic primary to secondary isola- tion rating of 2kVAC. This is verified by applying 3kVDC between the primary to secondary for 1 second. Note that the 2kVAC isolation is verified by a 3kVDC test. This is because the 2kVAC waveform has a peak voltage 1.414 times higher than 2kV, or 2.83kVDC. For the LTM8046, at least 3kVDC is applied. For further details please refer to the Isolation and Working Voltage section. An internal regulator provides power to the control cir- cuitry. The bias regulator normally draws power from the VIN pin, but if the BIAS pin is connected to an external voltage higher than 3.1V, bias power will be drawn from the external source, improving efficiency. VBIAS must not exceed VIN. The RUN pin is used to turn on or off the LTM8046, disconnecting the output and reducing the input current to 1μA or less. The LTM8046 is a variable frequency device. For a fixed input and output voltage, the frequency decreases as the load increases. For light loads, the current through the internal transformer may be discontinuous, so that frequency may appear to decrease. Note that a minimum load is required to keep the output voltage in regulation. Refer to the Typical Performance Characteristics section. |
Podobny numer części - LTM8046 |
|
Podobny opis - LTM8046 |
|
|
Link URL |
Polityka prywatności |
ALLDATASHEET.PL |
Czy Alldatasheet okazała się pomocna? [ DONATE ] |
O Alldatasheet | Reklama | Kontakt | Polityka prywatności | Linki | Lista producentów All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |