LT1118/LT1118-2.5
LT1118-2.85/LT1118-5
Low I
Q
, Low Dropout,
800mA, Source and Sink
Regulators Adjustable and
Fixed 2.5V, 2.85V, 5V Output
FEATURES
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DESCRIPTION
The LT
廬
1118 family of low dropout regulators has the
unique capability of maintaining output regulation while
sourcing or sinking load current. The 2.85V output voltage
regulator is ideal for use as a Boulay termination of up to
27 SCSI data lines. The regulator maintains regulation
while both sourcing and sinking current, enabling the use
of active negation drivers for improved noise immunity on
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 600碌A(chǔ), allowing continu-
ous connection to the TERMPWR lines. An ultralow power
shutdown mode is also available on the SO-8 version. In
Shutdown the output is high impedance and supply cur-
rent drops to less than 10碌A(chǔ).
Current limits in both sourcing and sinking modes, plus
on-chip thermal shutdown make the circuit tolerant of
output fault conditions.
The LT1118 is available in 3-lead SOT-223 and 8-lead SO
packages.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Regulates While Sourcing or Sinking Current
Provides Termination for up to 27 SCSI Lines
600碌A(chǔ) Quiescent Current
Ultra-Low Power Shutdown Mode
Current Limit and Thermal Shutdown Protection
Stable for Any C
LOAD
鈮?/div>
0.22碌F
Fast Settling Time
1V Dropout Voltage
APPLICATIONS
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Active Negation SCSI Terminations
Computers
Disk Drives
CD-ROM
Supply Splitter
TYPICAL APPLICATION
Load Transient Response
0.2V
IN
LT1118-2.85 OUT
GND
5V
2.2碌F
1碌F
CERAMIC
鈭哣
OUT
0V
鈥?0.2V
800mA
I
LOAD
1118 TA01
I
LOAD
0mA
鈥?400mA
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1118 TA02.tif
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