LD1085V18 ,3A LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORSELECTRICAL CHARACTERISTICS OF LD1085#25 (V =5.5V, C =C =10μF, T = -40 to 125°C, unlessI I O Aotherw ..
LD1085V25 ,3A LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORSAbsolute Maximum Ratings are those values beyond which damage to the device may occur. Functional o ..
LD1085V33 ,3A LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORSLD1085SERIES3A LOW DROP POSITIVE VOLTAGEREGULATOR ADJUSTABLE AND FIXED■ TYPICAL DROPOUT 1.3V (AT 3A ..
LD1085V36 ,3A LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORSELECTRICAL CHARACTERISTICS OF LD1085#18 (V =4.8V, C =C =10μF, T = -40 to 125°C, unlessI I O Aotherw ..
LD1085V50 ,3A LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORSAbsolute Maximum Ratings are those values beyond which damage to the device may occur. Functional o ..
LD1085V90 ,3A LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORSELECTRICAL CHARACTERISTICS OF LD1085#15 (V =4.5V, C =C =10μF, T = -40 to 125°C, unlessI I O Aotherw ..
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LD1085D2M-LD1085D2M18-LD1085D2M25-LD1085D2M5.0-LD1085D2T18-LD1085D2T25-LD1085D2T33-LD1085D2T36-LD1085D2T-R-LD1085P-LD1085V-LD1085V18-LD1085V25-LD1085V33-LD1085V36-LD1085V50-LD1085V90
3A LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
1/19February 2003 TYPICAL DROPOUT 1.3V (AT 3A) THREE TERMINAL ADJUSTABLE OR FIXED
OUTPUT VOLTAGE 1.5V, 1.8V, 2.5V, 2.85V,
3.3V,3.6V, 5V,8V, 9V,12V. GUARANTEED OUTPUT CURRENT UP TO OUPUT TOLERANCE ±1%AT 25°C AND
±2%IN FULL TEMPERATURE RANGE INTERNAL POWER AND THERMAL LIMIT WIDE OPERATING TEMPERATURE RANGE
-40°C TO 125°C PACKAGE AVAILABLE: TO-220, TO-220FP2 PAK,D2 PAK/A PINOUT COMPATIBILITY WITH STANDARD
ADJUSTABLE VREG
DESCRIPTIONThe LD1085isa LOW DROP Voltage Regulator
able to provide up to 3A of Output Current.
Dropoutis guaranteedata maximumof 1.5Vat
the maximum output current, decreasingat lower
loads. The LD1085is pinto pin compatible with
the older 3-terminal adjustable regulators, but has
better performancesin termof drop and output
tolerance. 2.85V output versionis suitable for SCSI-2
active termination. Unlike PNP regulators, where partof the output currentis wastedas quiescent
current, the LD1085 quiescent current flows into
the load, so increase efficiency. Onlya 10μF
minimum capacitoris need for stability.
The deviceis suppliedin TO-220, TO-220FP,2 PAK andD2 PAK/A. On chip trimming allows the
regulatorto reacha very tight output voltage
tolerance, within ±1%at 25°C.
LD1085
SERIES LOW DROP POSITIVE VOLTAGE
REGULATOR ADJUSTABLE AND FIXED
SCHEMATIC DIAGRAM
LD1085 SERIES2/19
ABSOLUTE MAXIMUM RATINGSAbsoluteMaximum Ratingsare those values beyond which damagetothe device may occur. Functional operation under these conditionis
not implied.
THERMAL DATA
APPLICATION CIRCUITS
LD1085 SERIES3/19
CONNECTION DIAGRAM (top view)
ORDERING CODES(*) Availablein Tape& Reel withthe suffix"R"for fixed versionand "-R"for adjustable version.
LD1085 SERIES4/19
ELECTRICAL CHARACTERISTICS OF LD1085#15(VI =4.5V,CI =CO =10μF,TA= -40to 125°C, unless
otherwise specified.)
NOTE1: See short-circuit current curvefor available output currentat fixed dropout.
ELECTRICAL CHARACTERISTICS OF LD1085#18(VI =4.8V,CI =CO =10μF,TA= -40to 125°C, unless
otherwise specified.)
NOTE1: See short-circuit current curvefor available output currentat fixed dropout.
LD1085 SERIES5/19
ELECTRICAL CHARACTERISTICS OF LD1085#25(VI =5.5V,CI =CO =10μF,TA= -40to 125°C, unless
otherwise specified.)
NOTE1: See short-circuit current curvefor available output currentat fixed dropout.
ELECTRICAL CHARACTERISTICS OF LD1085#285(VI =5.85V,CI =CO =10μF,TA= -40to 125°C,
unless otherwise specified.)
NOTE1: See short-circuit current curvefor available output currentat fixed dropout.
LD1085 SERIES6/19
ELECTRICAL CHARACTERISTICS OF LD1085#33(VI =6.3V,CI =CO =10μF,TA= -40to 125°C, unless
otherwise specified.)
NOTE1: See short-circuit current curvefor available output currentat fixed dropout.
ELECTRICAL CHARACTERISTICS OF LD1085#36 (VI=6.6V,CI =CO =10μF,TA= -40to 125°C, unless
otherwise specified.)
NOTE1: See short-circuit current curvefor available output currentat fixed dropout.
LD1085 SERIES7/19
ELECTRICAL CHARACTERISTICS OF LD1085#50(VI =8V,CI =CO =10μF,TA= -40to 125°C, unless
otherwise specified.)
NOTE1: See short-circuit current curvefor available output currentat fixed dropout.
ELECTRICAL CHARACTERISTICS OF LD1085#80 (VI=11V,CI =CO =10μF,TA= -40to 125°C, unless
otherwise specified.)
NOTE1: See short-circuit current curvefor available output currentat fixed dropout.
LD1085 SERIES8/19
ELECTRICAL CHARACTERISTICS OF LD1085#90(VI =12V,CI =CO =10μF,TA= -40to 125°C, unless
otherwise specified.)
NOTE1: See short-circuit current curvefor available output currentat fixed dropout.
ELECTRICAL CHARACTERISTICS OF LD1085#120 (VI=15V,CI =CO =10μF,TA= -40to 125°C, unless
otherwise specified.)
NOTE1: See short-circuit current curvefor available output currentat fixed dropout.
LD1085 SERIES9/19
ELECTRICAL CHARACTERISTICS OF LD1085#(VI =4.25V,CI =CO =10μF,TA= -40to 125°C, unless
otherwise specified.)
NOTE1: See short-circuit current curvefor available output currentat fixed dropout.
LD1085 SERIES10/19
TYPICAL CHARACTERISTICS (unless otherwise specifiedTj= 25°C,CI=CO =10μF)
Figure1: Output Voltagevs Temperature
Figure2: Output Voltagevs Temperature
Figure3: Output Voltagevs Temperature
Figure4: Short Circuit Currentvs Dropout
Voltage
Figure5: Line Regulationvs Temperature
Figure6: Load Regulationvs Temperature
