Datasheet Linear Technology LTC3421EUF#TRPBF

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• Download
  LCD Power Supply Provides ±15V Plus LED Driver &mdash LT Journal
  PDF, 84 Kb, File published: May 1, 2004
  Extract from the document

  DESIGN IDEAS LCD Power Supply Provides
  В±15V Plus LED Driver
  VIN
  2.7V
  TO 4.2V L1
  10ВµH
  CIN
  4.7ВµF
  6.3V 15mA SW1 VOUT1 VIN
  SHDN1 SHDN2
  SW2 374k
  1% D2 C1
  0.1ВµF L2
  10ВµH C2
  0.1ВµF B0540W CLED
  0.47ВµF
  16V VREF
  FB2 GND LED1 LED2 LED3 R1
  82.5 FB1 LT3463 COUT1, COUT2:
  CLED:
  L1, L2:
  LED1–LED3:
  10pF …

• Download
  Synchronous Boost Converter with Output Disconnect Delivers 4W from Two Cells &mdash LT Journal
  PDF, 137 Kb, File published: May 1, 2004
  Extract from the document

  DESIGN IDEAS Synchronous Boost Converter
  with Output Disconnect
  Delivers 4W from Two Cells by Dongyan Zhou
  Introduction
  Portable, battery-powered devices require power supplies that are efficient
  and small. The LTC3421 synchronous
  boost converter offers both. It features
  a low, 12ВµA quiescent current in Burst
  Mode operation, greatly improving battery life in applications that spend
  much of their time in low power mode.
  The LTC3421 itself is small, available
  in a small 4mm Г— 4mm QFN package,
  and its oscillator frequency can be programmed or synchronized up to 3MHz,
  which minimizes the size of external
  components. It can drive power hungry
  circuits with its 3A guaranteed switch
  current—up to 4W output power from
  two NiCd or NiMH cells.
  In a conventional synchronous
  boost converter, the internal body
  diode of the synchronous rectifier
  connects the input supply through the
  inductor to the load. The peak inrush …

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Manufacturer's Classification

• Power Management > Switching Regulator > Step-Up (Boost) Regulators > Micropower Boost | Internal Power Switch Boost

Other Names:

LTC3421EUFTRPBF, LTC3421EUF TRPBF