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  42V, 2.5A Synchronous Step-Down Regulator with 2.5ОјA Quiescent Current &mdash DN504
  PDF, 97 Kb, Archivo publicado: mayo 30, 2012
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  42V, 2.5A Synchronous Step-Down Regulator with 2.5ВµA
  Quiescent Current
  Design Note 504
  Hua (Walker) Bai
  Introduction
  The LTВ®8610 and LT8611 are 42V, 2.5A synchronous
  step-down regulators that meet the stringent high
  input voltage and low output voltage requirements of
  automotive, industrial and communications applications. To minimize external components and solution
  size, the top and bottom power switches are integrated
  in a synchronous regulator topology, including internal
  compensation. The regulator consumes only 2.5ОјA
  quiescent current from the input source even while
  regulating the output.
  High Efficiency Synchonous Operation
  Replacing an external Schottky diode with an internal
  synchronous power switch not only minimizes the solution size, but also increases efficiency and reduces power
  dissipation. The efficiency improvement is significant
  in low output voltage applications where the voltage
  drop of the Schottky diode represents a relatively large
  portion of the output voltage. Figure 1 shows a 12V
  to 3.3V circuit. Figure 2 shows the efficiency of this
  circuit reaching 94%, which is 5% to 10% higher than …

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• Power Management > Switching Regulator > Step-Down (Buck) Regulators > Micropower Buck Regulators | Internal Power Switch Buck | High Input Voltage Buck
• Power Management > LED Driver ICs > Step-Down (Buck) LED Drivers

Otros nombres:

LT8611EUDDTRPBF, LT8611EUDD TRPBF