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Экологический статус

Design Notes

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  High Efficiency 100mA Synchronous Buck Converter with Wide Input Range from 4V to 150V &mdash DN532
  PDF, 238 Кб, Файл опубликован: 17 сен 2014
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  High Efficiency 100mA Synchronous Buck Converter with
  Wide Input Range from 4V to 150V
  Design Note 532
  Charlie Zhao
  4V to 150V Input to 3.3V Output,
  100mA Buck Converter
  Figure 1 shows a 3.3V output, 100mA maximum
  load current synchronous buck converter, with wide
  input range from 4V to 150V. The LTC3639 has three
  programmable fixed output voltages 1.8V, 3.3V and
  5V. These fixed outputs use an internal feedback
  resistor divider and can be simply selected with the
  VPRG1 and VPRG2 pins. For 3.3V output, just connect
  VPRG1 to ground and tie VPRG2 to the SS pin. The VFB
  pin is directly connected to the output without using
  an external resistor divider. Efficiency curves with
  different input voltages are shown in Figure 2. Introduction
  The wide 4V to 150V input range of the LTC В®3639 stepdown DC/DC converter allows automotive, avionics
  and distributed power systems to: Cover extensive transient requirements Enable multiple wide-ranging input power sources,
  such as a high voltage DC bus with a low voltage
  battery backup Create a universal power supply to cover a variety
  of input sources, thereby reducing inventory and
  the cost of design and manufacture …

Модельный ряд

Классификация производителя

• Power Management > Switching Regulator > Step-Down (Buck) Regulators > Micropower Buck Regulators | Internal Power Switch Buck | High Input Voltage Buck
• Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Switching Regulators

Варианты написания:

LTC3639HMSEPBF, LTC3639HMSE PBF