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  New Micropower, Low Dropout Regulators Ease Battery Supply Designs &mdash DN121
  PDF, 85 Kb, Datei veröffentlicht: Jan 5, 1996
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  New Micropower, Low Dropout Regulators Ease Battery
  Supply Designs – Design Note 121
  Mitchell Lee and John Seago
  Three new linear regulators simplify the design of
  battery-operated equipment. The LTВ®1521 is a 300mA,
  positive low dropout regulator with micropower quiescent current and shutdown. The LT1175 is a 500mA
  negative complement with adjustable current limit. A
  third product, the LT1118, has the unique capability of
  maintaining output regulation while sourcing or sinking
  load current.
  The LT1521 contains all of the features associated
  with battery-operated applications. In designs where
  memory must be powered continuously, the LT1521’s
  12ОјA quiescent current eliminates the need for a
  separate micropower backup supply. In shutdown the
  quiescent current drops to 6ОјA. Figure 1 shows an
  example application using the LTC В®1477 as a means
  of disconnecting all circuitry except for memory and
  ON/OFF control logic. The LTC1477 protected high
  side switch draws only 10nA in shutdown, eliminating
  itself as well as its load as a factor in battery shelf life.
  In battery-backed memory applications, the output of
  the LT1521 can be held up by the backup battery while …

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• Power Management > LDO Linear Regulators > Negative Linear Regulators (LDO) | Extended Temperature (H & MP) Linear Regulators

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LT1175IN8-5PBF, LT1175IN8-5 PBF, LT1175IN85#PBF, LT1175IN8 5#PBF