Datasheet LT1118, LT1118-2.5, LT1118-2.85, LT1118-5 (Analog Devices)

ManufacturerAnalog Devices
DescriptionLow IQ, Low Dropout, 800mA, Source and Sink Regulators Adjustable and Fixed 2.5V, 2.85V, 5V Output
Pages / Page8 / 1 — FEATURES. DESCRIPTION. Regulates While Sourcing or Sinking Current. …
File Format / SizePDF / 253 Kb
Document Languageenglish

FEATURES. DESCRIPTION. Regulates While Sourcing or Sinking Current. Provides Termination for up to 27 SCSI Lines

Datasheet LT1118, LT1118-2.5, LT1118-2.85, LT1118-5 Analog Devices

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LT1118/LT1118-2.5 LT1118-2.85/LT1118-5 Low IQ, Low Dropout, 800mA, Source and Sink Regulators Adjustable and Fixed 2.5V, 2.85V, 5V Output
FEATURES DESCRIPTION
n
Regulates While Sourcing or Sinking Current
The LT®1118 family of low dropout regulators has the n
Provides Termination for up to 27 SCSI Lines
unique capability of maintaining output regulation while n
600μA Quiescent Current
sourcing or sinking load current. The 2.85V output voltage n Ultralow Power Shutdown Mode regulator is ideal for use as a Boulay termination of up n Current Limit and Thermal Shutdown Protection to 27 SCSI data lines. The regulator maintains regulation n Stable for Any CLOAD ≥ 0.22μF while both sourcing and sinking current, enabling the use n Fast Settling Time of active negation drivers for improved noise immunity on n 1V Dropout Voltage the data lines. Regulation of output voltage is maintained for TERMPWR voltages as low as 4.0V. When unloaded, quiescent supply current is a low 600μA, allowing continu-
APPLICATIONS
ous connection to the TERMPWR lines. An ultralow power n Active Negation SCSI Terminations shutdown mode is also available on the SO-8 version. In n Computers Shutdown the output is high impedance and supply cur- n Disk Drives rent drops to less than 10μA. n CD-ROM Current limits in both sourcing and sinking modes, plus n Supply Splitter on-chip thermal shutdown make the circuit tolerant of L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. output fault conditions. All other trademarks are the property of their respective owners. The LT1118 is available in 3-lead SOT-223 and 8-lead SO packages.
TYPICAL APPLICATION Load Transient Response
0.2V IN LT1118-2.85 OUT $V 0V OUT GND –0.2V 1μF 5V 2.2μF CERAMIC 800mA ILOAD ILOAD 1118 TA01 0mA –400mA 1118 TA02 1118fd 1