Datasheet Linear Technology LTC1733EMSE#TRPBF

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Design Notes

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  Li-Ion Linear Charger Allows Fast, Full Current Charging While Limiting PC Board Temperature to 85В°C &mdash DN283
  PDF, 75 Kb, File published: Apr 3, 2002
  Extract from the document

  Li-Ion Linear Charger Allows Fast, Full Current Charging While
  Limiting PC Board Temperature to 85°C – Design Note 283
  Fran Hoffart Thermal Feedback Loop Limits IC Temperature
  A thermal feedback loop limits the maximum junction
  temperature of the LTC1733 to approximately 105В°C, well
  below the maximum allowable junction temperature of
  125В°C. As the junction temperature approaches 105В°C,
  the on-chip temperature sensor begins to smoothly
  decrease the charge current to a level that will limit the
  maximum junction temperature to 105В°C (see Figure 1).
  Unlike ICs that simply shut down at 160В°C to protect
  themselves, the LTC1733 can operate in this temperature
  control mode indefinitely. Devices with a 160°C thermal
  shutdown temperature could begin switching on and
  off at the thermal limit or might not operate correctly
  as a charger. Thermal shutdown is not a healthy mode
  of operation, it is rather intended to protect the IC from
  failure when overstressed. 04/02/283_conv 1.8
  1.6
  1.4
  CHARGE CURRENT (A) 4.5 BATTERY
  VOLTAGE 4.0 THERMAL
  LIMIT IN …

Articles

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  LTC1733: Thermal Regulation Maximizes Lithium-Ion Battery Charging Rate Without Risk of Overheating &mdash LT Journal
  PDF, 63 Kb, File published: May 1, 2002
  Extract from the document

  LINEAR TECHNOLOGY
  VOLUME XII NUMBER 2 MAY 2002 IN THIS ISSUE…
  COVER ARTICLE
  LTC1733: Thermal Regulation
  Maximizes Lithium-Ion Battery
  Charging Rate Without Risk of
  Overheating . 1
  Trevor Barcelo Issue Highlights . 2
  LTCВ® in the News . 2 LTC1733: Thermal
  Regulation Maximizes
  Lithium-Ion Battery
  Charging Rate Without
  Risk of Overheating DESIGN FEATURES
  LTВ®3420 Charges Photoflash
  Capacitors Quickly and Efficiently
  While Using Minimal Board Space
  . 5 Albert Wu Small 1.25A Step-Down Regulator
  Switches at 4MHz for Space-Sensitive
  Applications . 9
  Damon Lee Dual DC/DC Controller Brings 2-Phase
  Benefits to Low Input Voltage
  Applications . 12
  Jason Leonard ThinSOTв„ў RF Power Controllers Save …

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Manufacturer's Classification

• Power Management > Battery Management > Battery Charger IC > Linear Battery Chargers

Other Names:

LTC1733EMSETRPBF, LTC1733EMSE TRPBF