Datasheet Linear Technology LT3467IDDB#PBF — Даташит

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Корпус / Упаковка / Маркировка

Параметры

Экологический статус

Другие варианты исполнения

LT3467

Design Notes

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  ThinSOT Switching Regulator Controls Inrush Current &mdash DN365
  PDF, 112 Кб, Файл опубликован: 21 апр 2005
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  advertisement ThinSOT Switching Regulator Controls Inrush Current
  Design Note 365
  Jesus Rosales
  Introduction
  Inrush current can be troublesome, especially when
  regulators are operated from batteries or a currentlimited source. In such cases, excessive inrush current
  can cause the input source to collapse and prevent the
  converter from ever starting up. Inrush current can also
  trip input line fuses or cause the output to overshoot.
  There are many ways to deal with this problem, but most
  of them are difficult to implement or have undesirable
  side effects, often making the cure worse than the cause. IIN
  0.2A/DIV
  VOUT
  5V/DIV
  50Ојs/DIV Figure 2. Input Current and Output Voltage at Turn-On
  Without CSS Capacitor for Figure 1 Circuit A Simple Solution
  Figure 1 shows a solution to this problem using the
  LTВ®3467 in a 10V-16V input to 12V/300mA output SEPIC
  converter. The LT3467 ThinSOTв„ў switching regulator
  integrates a soft-start function with a built-in 42V,
  1.1A switch. Figures 2 and 3 illustrate the effect that
  the LT3467’s soft-start feature has on inrush currents. IIN …

Статьи

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  1.1A Boost Provides Soft-Start Capability in Tiny ThinSOT Package &mdash LT Journal
  PDF, 475 Кб, Файл опубликован: 25 мар 2005
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  DESIGN FEATURES 1.1A Boost Provides Soft-Start
  Capability in Tiny ThinSOT Package
  Introduction by Brian Adolf L1
  2.7ВµH
  C1
  4.7ВµF OFF ON C3
  0.047ВµF 4 D1 6 1 VIN SW SHDN
  LT3467
  5
  SS R1
  402k C4
  3.3pF VOUT
  5V
  765mA AT VIN = 4.2V,
  540mA AT VIN = 3.3V,
  360mA AT VIN = 2.6V 3 FB R2
  133k GND
  2 C2
  15ВµF C1, C2: X5R OR X7R, 6.3V
  D1: ON SEMICONDUCTOR MBRM120
  L1: SUMIDA CR43-2R7 95
  90
  VIN = 4.2V 85 …

Модельный ряд

Классификация производителя

• Power Management > Switching Regulator > LCD/CCD/OLED Bias | SEPIC Regulators
• Power Management > Switching Regulator > Step-Up (Boost) Regulators > Internal Power Switch Boost

Варианты написания:

LT3467IDDBPBF, LT3467IDDB PBF