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LTC3557-1

Artículos

• Descargar
  Highly Integrated USB Power Manager with Li-Ion Charger and Three Step-Down Switching Regulators in 4mm x 4mm QFN &mdash LT Journal
  PDF, 244 Kb, Archivo publicado: jun 14, 2007
  Extracto del documento

  DESIGN FEATURES L Highly Integrated USB Power Manager
  with Li-Ion Charger and Three
  Step-Down Switching Regulators
  in 4mm Г— 4mm QFN
  by Amit Lele
  Introduction
  Mobile technology has radically
  changed the way we acquire, share
  and disseminate information. Modern,
  feature-rich handheld and portable
  devices require several power management circuits, including a battery
  charger, multiple step-down switching
  regulators and low power LDOs for
  watchdog circuitry. If each of these
  functions is served by a separate power
  supply IC, each IC (and its external
  components) occupies valuable board
  space, consumes battery-draining
  quiescent current and significantly
  increases the overall development and material costs of the device. The
  LTC3557 solves this problem by bringing all power management functions
  into a single device. It combines a full
  featured USB power manager, a Li-ion …

• Descargar
  New Family of Integrated Power Controllers Combine Fast Battery Charging, PowerPath Control and Efficient DC/DC Converters in Less Than 20mm2 &mdash LT Journal
  PDF, 303 Kb, Archivo publicado: sept 23, 2008
  Extracto del documento

  L DESIGN FEATURES New Family of Integrated Power
  Controllers Combine Fast Battery
  Charging, PowerPath Control and
  Efficient DC/DC Converters in
  by Sam Nork
  Less Than 20mm2
  Introduction
  The quickest way to build an efficient
  power system for a battery-powered
  portable application is to use an
  IC that combines all power control
  functions into a single chip, namely a
  Power Management Integrated Circuit
  (PMIC). PMICs seamlessly manage
  power flow from various power sources
  (wall adapters, USB and batteries) to
  power loads (device systems and the
  charging battery), while maintaining
  current limits where required (such
  as that specified for USB). To this
  end, PMICs typically feature built-in
  PowerPathв„ў control, DC/DC conver-USB/WALL
  4.35V TO 5.5V TO OTHER …

Linea modelo

Clasificación del fabricante

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

Otros nombres:

LTC3557EUFTRPBF, LTC3557EUF TRPBF