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LT1086 Datasheet(PDF) 1 Page - Linear Technology

Part No. LT1086
Description  1.5A Low Dropout Positive Regulators Adjustable and Fixed 2.85V, 3.3V, 3.6V, 5V, 12V
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1086 Datasheet(HTML) 1 Page - Linear Technology

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1
LT1086 Series
sn1086 1086ffs
APPLICATIO S
FEATURES
DESCRIPTIO
TYPICAL APPLICATIO
s
3-Terminal Adjustable or Fixed
2.85V, 3.3V, 3.6V, 5V, 12V
s
Output Current of 1.5A (0.5A for LT1086H)
s
Operates Down to 1V Dropout
s
Guaranteed Dropout Voltage at Multiple Current Levels
s
Line Regulation: 0.015%
s
Load Regulation: 0.1%
s
100% Thermal Limit Functional Test
s
Ripple Rejection >75dB
s
Available in 3-Pin TO-220 and 3-Pin DD Packages
The LT
®1086 is designed to provide up to 1.5A output
current. All internal circuitry is designed to operate down
to 1V input-to-output differential and the dropout voltage
is fully specified as a function of load current. Dropout is
guaranteed at several operating points up to a maximum
of 1.5V at maximum output current. Dropout decreases at
lower load currents. On-chip trimming adjusts the refer-
ence/ouput voltage to 1%. Current limit is also trimmed,
minimizing the stress on both the regulator and power
source circuitry under overload conditions.
The LT1086 is pin compatible with older 3-terminal adjust-
able regulators. A minimum 10
µF output capacitor is
required on these devices.
The LT1086 offers excellent line and load regulation speci-
fications and ripple rejection exceeds 75dB even at the
maximum load current of 1.5A. The LT1086 is floating
architecture with a composite NPN output stage. All of the
quiescent current and the drive current for the output
stage flows to the load increasing efficiency.
The LT1086 is available in a 3-pin TO-220 package and a
space-saving surface mountable 3-pin DD package.
1.5A Low Dropout Positive
Regulators Adjustable and
Fixed 2.85V, 3.3V, 3.6V, 5V, 12V
s
SCSI-2 Active Terminator
s
High Efficiency Linear Regulators
s
Post Regulators for Switching Supplies
s
Constant Current Regulators
s
Battery Chargers
s
Microprocessor Supply
LT1086 Dropout Voltage
OUTPUT CURRENT (A)
0
0
1
2
0.5
1
LT1086 • TA02
1.5
INDICATES GUARANTEED TEST POINT
–55
°C ≤ TJ ≤ 150°C
0
°C ≤ TJ ≤ 125°C
TJ = – 55°C
TJ = 25°C
TJ = 150°C
VIN ≥ 4.75V
3.3V AT 1.5A
*MAY BE OMITTED IF INPUT SUPPLY IS WELL
BYPASSED WITHIN 2" OF THE LT1086
LT1086-3.3
LT1086 • TA01
10
µF*
TANTALUM
10
µF
TANTALUM
IN
OUT
GND
5V to 3.3V Regulator
, LTC and LT are registered trademarks of Linear Technology Corporation.


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