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LTC3577-1

Notas de Diseño

• Descargar
  One Device Replaces Battery Charger, Pushbutton Controller, LED Driver and Voltage Regulator ICs in Portable Electronics &mdash DN470
  PDF, 76 Kb, Archivo publicado: jul 22, 2009
  Extracto del documento

  One Device Replaces Battery Charger, Pushbutton Controller,
  LED Driver and Voltage Regulator ICs in Portable Electronics
  Design Note 470
  Marty Merchant
  Introduction
  The LTCВ®3577/LTC3577-1 integrates a number of portable
  device power management functions into one IC, reducing
  complexity, cost and board area in handheld devices. The
  major functions include: Five voltage regulators to power memory, I/O, PLL,
  CODEC, DSP or a touch-screen controller A battery charger and PowerPathв„ў manager An LED driver for backlighting an LCD display, keypad
  and/or buttons Pushbutton control for debouncing the on/off button,
  supply sequencing and allowing end-users to force a
  hard reset when the microcontroller is not responding
  By combining these functions, the LTC3577/LTC3577-1
  does more than just reduce the number of required ICs; it
  solves the problems of functional interoperability—where
  otherwise separate features operate together for improved
  end-product performance. For instance, when the power
  input is from USB, the limited input current is logically
  distributed among the power supply outputs and the
  battery charger. Status output indicates when the pushbutton is depressed,
  allowing the microprocessor to alter operation or begin
  the power-down sequence. Holding the pushbutton down …

Artículos

• Descargar
  All-in-One Power for Portables: Single IC Replaces Battery Charger, Pushbutton Controller, LED Driver and Five Voltage Regulator ICs &mdash LT Journal
  PDF, 138 Kb, Archivo publicado: dic 1, 2009
  Extracto del documento

  L DESIGN IDEAS All-in-One Power for Portables:
  Single IC Replaces Battery Charger,
  Pushbutton Controller, LED Driver and
  Five Voltage Regulator ICs by Marty Merchant
  Introduction Pushbutton Control The LTC3577/LTC3577-1 integrates
  a number of portable device power
  management functions into one IC,
  reducing complexity, cost and board
  area in handheld devices. The major
  functions include:
  q Five voltage regulators to power
  memory, I/O, PLL, CODEC, DSP
  or a touch-screen controller
  q A battery charger and
  PowerPathв„ў manager
  q An LED driver for backlighting
  an LCD display, keypad and/or
  buttons
  q Pushbutton control for
  debouncing the on/off button,
  supply sequencing and allowing
  end-users to force a hard reset
  when the microcontroller is not …

Linea modelo

Clasificación del fabricante

• Power Management > PMIC & Multifunction > PMIC (DC/DC, PowerPath and Battery Charger)

Otros nombres:

LTC3577EUFFPBF, LTC3577EUFF PBF