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Notas de Diseño

• Descargar
  Switching USB Power Manager with PowerPath Control Offers Fastest Charge Time with Lowest Heat &mdash DN415
  PDF, 81 Kb, Archivo publicado: abr 12, 2007
  Extracto del documento

  Switching USB Power Manager with PowerPath Control Offers
  Fastest Charge Time with Lowest Heat – Design Note 415
  Dave Simmons
  Introduction
  Lithium-Ion and Lithium Polymer batteries are common
  in portable consumer products because of their relatively
  high energy density—they provide more capacity than
  other available chemistries within given size and weight
  constraints. USB battery charging is also becoming
  commonplace, as many portable devices require frequent
  interfacing with a PC for data transfer.
  As portable products become more complex, the need for
  higher capacity batteries increases, with a corresponding
  need for more advanced battery chargers. Larger batteries
  require either higher charging current or additional time
  to charge to their full capacity. Most consumers look for
  shorter charge times, so increasing the charge current
  seems obviously preferable, but increasing charge current
  presents two major problems. First, with a linear charger,
  increased current creates additional power dissipation
  (i.e., heat). Second, the charger must limit the current
  drawn from the 5V USB bus to either 100mA (500mW)
  or 500mA (2.5W) depending on the mode that the host …

Artículos

• Descargar
  Speed Up Li-ion Battery Charging and Reduce Heat with a Switching PowerPath Manager &mdash LT Journal
  PDF, 263 Kb, Archivo publicado: jun 17, 2008
  Extracto del documento

  LINEAR TECHNOLOGY June 2008 COVER ARTICLE
  Speed Up Li-ion Battery Charging
  and Reduce Heat with a Switching
  PowerPathв„ў Manager.1
  Steven Martin Linear in the News….2
  DESIGN FEATURES
  Hot Swapв„ў Controller Enables
  Standard Power Supplies to
  Share Load .6
  Vladimir Ostrerov Understanding IP2 and IP3 Issues in
  Direct Conversion Receivers for
  WCDMA Wide Area Basestations .10
  Doug Stuetzle Complete Dual-Channel Receiver
  Combines 14-Bit, 125Msps ADCs,
  Fixed-Gain Amplifiers and Antialias
  Filters in a Single 11.25mm Г— 15mm
  ОјModuleв„ў Package.14
  Todd Nelson Battery Manager Enables Integrated,
  Efficient, Scalable and Testable
  Backup Power Systems.17
  Mark Gurries 500nA Supply Supervisors Extend
  Battery Life in Portable Electronics.22
  Bob Jurgilewicz Quad Output Regulator Meets Varied …

Linea modelo

Clasificación del fabricante

• Power Management > PMIC & Multifunction > USB Power Manager (PowerPath, Battery Charger)

Otros nombres:

LTC4088EDEPBF, LTC4088EDE PBF