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Home ›  LL16 > LD1117D-LD1117D-1.8-LD1117D33-LD1117D33C-LD1117DT-LD1117DT-1.8-LD1117DT18C-LD1117DT25-LD1117DT25C-LD1117DT-3.3-LD1117DT-3.3C-LD1117DT33-LD1117DT33C-LD1117DT-33C-LD1117DT50-LD1117S-LD1117S-1.8-LD1117S12-LD1117S18-LD1117S18C-LD1117S-2.5-LD1117S25-LD1,Low drop fixed positive voltage regulator, 3.3V
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Partno Mfg Dc Qty AvailableDescript
LD1117DSTN/a1400avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117D-1.8 |LD1117D18STN/a300avaiLow drop fixed positive voltage regulator, 1.8V
LD1117D33STN/a23avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117D33CSTN/a57180avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117DTSTN/a388avaiLow drop adjustable positive voltage regulator
LD1117DT-1.8 |LD1117DT18STN/a500avaiLow drop fixed positive voltage regulator, 1.8V
LD1117DT18CSTN/a20000avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117DT25STN/a70avaiLow drop fixed positive voltage regulator, 2.5V
LD1117DT25CSTN/a60avaiLow drop fixed positive voltage regulator, 2.5V
LD1117DT-3.3 |LD1117DT33STN/a1220avaiLow drop fixed positive voltage regulator, 3.3V
LD1117DT-3.3C |LD1117DT33CN/a1500avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117DT33STN/a97800avaiLow drop fixed positive voltage regulator, 3.3V
LD1117DT33CSTN/a2940avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117DT-33C |LD1117DT33CSTN/a5000avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117S18CSTN/a32000avaiLow drop fixed positive voltage regulator, 1.8V
LD1117S-2.5 |LD1117S25蓝箭N/a23093avaiLow drop fixed positive voltage regulator, 2.5V
LD1117S25STN/a66avaiLow drop fixed positive voltage regulator, 2.5V
LD1117DT50STN/a5200avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117SFairchildN/a6000avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117SSTN/a646avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117SN/a1812avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117S-1.8 |LD1117S18ST/ROHSN/a88388avaiLow drop fixed positive voltage regulator, 1.8V
LD1117S12STN/a32000avaiLow drop fixed positive voltage regulator, 1.2V
LD1117S18STN/a63000avaiLow drop fixed positive voltage regulator, 1.8V
LD1117S-25 |LD1117S25NSCN/a500avaiLow drop fixed positive voltage regulator, 2.5V
LD1117S30STN/a2440avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117S33STN/a70avaiLow drop fixed positive voltage regulator, 3.3V
LD1117S33CSTN/a32000avaiLow drop fixed positive voltage regulator, 3.3V
LD1117S-5.0 |LD1117S50蓝箭N/a4000avaiLow drop fixed positive voltage regulator, 5.0V
LD1117S50STN/a500avaiLow drop fixed positive voltage regulator, 5.0V
LD1117S50CSTN/a32000avaiLow drop fixed positive voltage regulator, 5.0V
LD1117VSTN/a950avaiLow drop adjustable positive voltage regulator
LD1117V18STN/a26000avaiLow drop fixed positive voltage regulator, 1.8V
LD1117V2.5 |LD1117V25STN/a4000avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117V25STN/a90avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117V30STN/a20avaiLow drop fixed positive voltage regulator, 3.0V
LD1117V33STMN/a10000avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117V50STMN/a10000avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117V50ST,STN/a10000avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117V50STN/a4885avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS


LD1117DT33 ,Low drop fixed positive voltage regulator, 3.3Vthermal characteristics even offeringperformances in terms of Drop and Tolerance.a relevant space s ..
LD1117DT33C ,LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORSthermal characteristics even offeringperformances in terms of Drop and Tolerance.a relevant space s ..
LD1117DT-33C ,LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORSBLOCK DIAGRAMFebruary 2003 1/23LD1117 SERIES
LD1117DT33CTR ,LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORSLD1117SERIESLOW DROP FIXED AND ADJUSTABLEPOSITIVE VOLTAGE REGULATORS

LD1117D-LD1117D-1.8-LD1117D33-LD1117D33C-LD1117DT-LD1117DT-1.8-LD1117DT18C-LD1117DT25-LD1117DT25C-LD1117DT-3.3-LD1117DT-3.3C-LD1117DT33-LD1117DT33C-LD1117DT-33C-LD1117DT50-LD1117S-LD1117S-1.8-LD1117S12-LD1117S18-LD1117S18C-LD1117S-2.5-LD1117S25-LD1
LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
1/23February 2003 LOW DROPOUT VOLTAGE (1V TYP.) 2.85V DEVICE PERFORMANCES ARE
SUITABLE FOR SCSI-2 ACTIVE
TERMINATION OUTPUT CURRENT UP TO 800 mA FIXED OUTPUT VOLTAGE OF: 1.2V, 1.8V,
2.5V, 2.85V, 3.0V, 3.3V, 5.0V ADJUSTABLE VERSION AVAILABILITY
(Vrel=1.25V) INTERNAL CURRENT AND THERMAL LIMIT AVAILABLEIN± 1% (AT 25°C) AND 2%IN
FULL TEMPERATURE RANGE SUPPLY VOLTAGE REJECTION: 75dB (TYP.)
DESCRIPTION

The LD1117isa LOW DROP Voltage Regulator
ableto provide upto 800mAof Output Current,
available evenin adjustable version (Vref=1.25V).
Concerning fixed versions, are offered the
following Output Voltages: 1.2V,1.8V,2.5V,2.85V,
3.0V 3.3V and 5.0V. The 2.85V typeis ideal for
SCSI-2 lines active termination. The deviceis
supplied in: SOT-223, DPAK, SO-8 and TO-220.
The SOT-223 and DPAK surface mount packages
optimize the thermal characteristics even offering relevant space saving effect. High efficiencyis
assured by NPN pass transistor.In factin this
case, unlike than PNP one, the Quiescent Current
flows mostly into the load. Onlya very common
10μF minimum capacitoris needed for stability. chip trimming allows the regulatorto reacha
very tight output voltage tolerance, within± 1%at °C. The ADJUSTABLE LD1117is pinto pin
compatible with the other standard. Adjustable
voltage regulators maintaining the better
performancesin termsof Drop and Tolerance.
LD1117
SERIES

LOW DROP FIXED AND ADJUSTABLE
POSITIVE VOLTAGE REGULATORS
BLOCK DIAGRAM
LD1117 SERIES
2/23
ABSOLUTE MAXIMUM RATINGS

AbsoluteMaximum Ratingsare those values beyond which damagetothe device may occur. Functional operation under these conditionis
not implied. Overthe above suggested Max Power Dissipationa Short Circuit could definitively damagethe device.
THERMAL DATA
APPLICATION CIRCUIT
(FOR 1.2V)
APPLICATION CIRCUIT
(FOR OTHER FIXED OUTPUT VOLTAGES)
LD1117 SERIES
3/23
CONNECTION DIAGRAM
(top view)
NOTE: The TABis connectedtothe VOUT.
ORDERING CODES

(*) Availableon request
LD1117 SERIES
4/23
ELECTRICAL CHARACTERISTICS OF LD1117#12
(referto the test circuits,TJ=0to 125°C,=10 μF,R= 120Ω between GND and OUT pins, unless otherwise specified)
ELECTRICAL CHARACTERISTICS OF LD1117#18
(referto the test circuits,TJ=0to 125°C,O=10 μF unless otherwise specified)
LD1117 SERIES
5/23
ELECTRICAL CHARACTERISTICS OF LD1117#25
(referto the test circuits,TJ=0to 125°C,=10 μF unless otherwise specified)
ELECTRICAL CHARACTERISTICS OF LD1117#28
(referto the test circuits,TJ=0to 125°C,=10 μF unless otherwise specified)
LD1117 SERIES
6/23
ELECTRICAL CHARACTERISTICS OF LD1117#30
(referto the test circuits,TJ=0to 125°C,=10 μF unless otherwise specified)
ELECTRICAL CHARACTERISTICS OF LD1117#33
(referto the test circuits,TJ=0to 125°C,O=10 μF unless otherwise specified)
LD1117 SERIES
7/23
ELECTRICAL CHARACTERISTICS OF LD1117#50
(referto the test circuits,TJ=0to 125°C,=10 μF unless otherwise specified)
ELECTRICAL CHARACTERISTICS OF LD1117 (ADJUSTABLE)
(referto the test circuits,J=0to 125°C,CO=10μF unless otherwise specified)
LD1117 SERIES
8/23
ELECTRICAL CHARACTERISTICS OF LD1117#18C
(referto the test circuits,TJ= -40to 125°C,=10 μF unless otherwise specified)
ELECTRICAL CHARACTERISTICS OF LD1117#25C
(referto the test circuits,TJ= -40to 125°C,=10 μF unless otherwise specified)
LD1117 SERIES
9/23
ELECTRICAL CHARACTERISTICS OF LD1117#30C
(referto the test circuits,TJ= -40to 125°C,=10 μF unless otherwise specified)
ELECTRICAL CHARACTERISTICS OF LD1117#33C
(referto the test circuits,TJ= -40to 125°C,=10 μF unless otherwise specified)
LD1117 SERIES
10/23
ELECTRICAL CHARACTERISTICS OF LD1117#50C
(referto the test circuits,TJ= -40to 125°C,O=10 μF unless otherwise specified)
LD1117 SERIES
11/23
ELECTRICAL CHARACTERISTICS OF LD1117C (ADJUSTABLE)
(referto the test circuits,= -40to 125°C, CO=10μF unless otherwise specified)
LD1117 SERIES
12/23
TYPICAL APPLICATIONS
Figure1:
Negative Supply
Figure2:
Active Terminator for SCSI-2 BUS
Figure3:
Circuit for Increasing Output Voltage
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