LD1085 Fast Delivery |IC PHOENIX CO.,LIMITED

LD1085 ,3A LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORSLD1085SERIES 3A LOW DROP FIXED AND ADJUSTABLEPOSITIVE VOLTAGE REGULATORSn TYPICAL DROPOUT VOLTAGE1 ..
LD1085CDT-R ,3A LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORSElectrical Characteristics Of LD1085CDT25 (V =5.5V, C = C =10µ F, T = -40 to 125°C, I I O Aunless o ..
LD1085CDT-R ,3A LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORSElectrical Characteristics Of LD1085CDT15 (V =4.5V, C = C =10µ F, T = -40 to 125°C, I I O Aunless o ..
LD1085CDT-R ,3A LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORSLD1085CSERIES3A LOW DROP POSITIVE VOLTAGEREGULATOR ADJUSTABLE AND FIXED

LD1085
3A LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1085
SERIES LOW DROP FIXED AND ADJUSTABLE
POSITIVE VOLTAGE REGULATORS
May 2000
BLOCK DIAGRAM2 PAK TYPICAL DROPOUT VOLTAGE1.3V AT 3A THREE TERMINAL ADJUSTABLEOR FIXED
OUTPUT VOLATGE1.8V,2.5V,2.85V,3.3V,
3.6V, 5V, 8V, 9V, 12V GUARANTEED OUTPUT CURRENT UP TO OUTPUT TOLERANCE ±1% AT25oC AND
±2%IN FULL TEMPERATURE RANGE INTERNALPOWER AND THERMAL LIMIT WIDEOPERATING TEMPERATURE RANGE
-40oC TO 125oC PACKAGEAVAILABLE: TO-220D2 PAK PINOUT COMPATIBILITYWITH STANDARD
ADJUSTABLE VOLTAGE REGULATORS
DESCRIPTION
The LD1085isa LOW DROP Voltage Regulator
able to provide upto 3A of Output Current.
Dropoutis guaranteedata maximumof 1.5Vat
the maximum output current, decreasing at
lower loads. The LD1085is pin compatible with
older 3-terminal adjustable regulators, but has
better performancesin termof drop and output
tolerance.A 2.85V output versionis suitable for
SCSI-2 active termination. Unlike PNP
regulators, wherea partof the output currentis
wasted as quiescent current, the LD1085
quiescent current flow into the load,so increase
efficency. Onlya 10 μF minimum capacitoris
need for stability. The deviceis suppliedin
TO-220,D2 PAK andD2 PAK/A packages. On
chip trimming allows the regulatorto reacha
very tight output voltage tolerance, within± 1%25oC.
TO-2202 PAK/A
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ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
VIN DC Input Voltage 30 V
IOUT Output Current Internally Limited mA
Ptot PowerDissipation Internally Limited mW
Tstg Storage Temperature Range -50to 150 oC
Top Operating Junction Temperature Range -40to 125 oC
Absolute Maximum Ratingsare those value beyond which damagetothe device may occur. Functional operation under these conditionis
notimplied. Overthe above suggestedMax Power Dissipationa ShortCircuit could definetively damagethe device.
THERMALDATA
Symbol Parameter TO-220 D2 PAK Unit
Rthj-case
Rthj-amb
Thermal Resistance Junction-case
Thermal Resistance Junction-ambient
62.5 C/W C/W
APPLICATION CIRCUIT FOR FIXED AND ADJUSTABLE VERSION
CONNECTION DIAGRAM AND ORDERING NUMBERS (top view)
TO-220 D2 PAK (**) D2 PAK/A (**) Output Voltage
LD1085V18
LD1085V25
LD1085V28
LD1085V33
LD1085V36
LD1085V50
LD1085V80
LD1085V90
LD1085V120
LD1085D2T18
LD1085D2T25
LD1085D2T28
LD1085D2T33
LD1085D2T36
LD1085D2T50
LD1085D2T80
LD1085D2T90
LD1085D2T120
LD1085D2M18
LD1085D2M25
LD1085D2M28
LD1085D2M33
LD1085D2M36
LD1085D2M50
LD1085D2M80
LD1085D2M90
LD1085D2M120
1.8V
2.5V
2.85V
3.3V
3.6V
12V
LD1085V LD1085D2T LD1085D2M 1.25to 28V
(**) Availablein Tape& Reel withthe suffix”R”for fixed versionand ”-R”for adjustableversion.
TO-220 D2 PAK D2 PAK/A =VREF(1+R2)
LD1085 SERIES
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ELECTRICAL CHARACTERISTICS FOR LD1085#25 (referto the test circuits,= -40to 125oC, VIN= 5.5V, CIN =CO =10 μF unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit Output Voltage IO=0 mA Tj =25oC 2.475 2.5 2.525 V Output Voltage(Note1) IO=0to3A Vin= 4.1to30V 2.45 2.5 2.55 V
ΔVO Line Regulation Vin=4.1to 18VIO=0 mATj =25o C0.2 5 mV
ΔVO Line Regulation Vin=4.1to 18VIO=0 mA 0.4 5 mV
ΔVO Load Regulation IO=0to3A Tj =25o C2 10 mV
ΔVO Load Regulation IO=0to3A 4 20 mV Dropout Voltage IO=3A 1.3 1.5 V Quiescent Current Vin≤ 30V 5 10 mA
ISC Short Circuit Current VIN -VO =5V
VIN -VO= 25V
Thermal Regulation Ta =25oC 30ms Pulse 0.008 0.04 %/W
SVR Supply Voltage Rejection IO=3A f= 120Hz CO =25μF
Vin=7.5±3V 72 dB Output Noise Voltage B= 10Hzto 10KHz Ta =25oC 0.003 % Temperature Stability 0.5 % Long TermStability 1000hrsTa= 125o C0.5 %
Note1: See short-circuit curvefor availableoutput currentat fixed dropout.
ELECTRICAL CHARACTERISTICS FOR LD1086#18 (referto the test circuits,= -40to 125oC, VIN= 4.8V, CIN =CO =10 μF unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit Output Voltage IO=0 mA Tj =25oC 1.782 1.8 1.818 V Output Voltage(Note1) IO=0to3A VIN=3.4to30V 1.764 1.8 1.836 V
ΔVO Line Regulation VIN=3.4to18VIO=0 mATj =25o C0.2 4 mV
ΔVO Line Regulation VIN=3.4to18VIO=0 mA 0.4 4 mV
ΔVO Load Regulation IO=0to3A Tj =25o C2 10 mV
ΔVO Load Regulation IO=0to3A 4 20 mV Dropout Voltage IO=3A 1.3 1.5 V Quiescent Current VIN≤30V 5 10 mA
ISC Short Circuit Current VIN -VO =5V
VIN -VO= 25V
Thermal Regulation Ta =25oC 30ms Pulse 0.008 0.04 %/W
SVR Supply Voltage Rejection IO=3A f= 120Hz CO =25μF
VIN= 5.3±1V 75 dB Output Noise Voltage B= 10Hzto 10KHz Ta =25oC 0.003 % Temperature Stability 0.5 % Long TermStability 1000hrsTa= 125o C0.5 %
Note1: See short-circuit curvefor availableoutput currentat fixed dropout.
LD1085 SERIES
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ELECTRICAL CHARACTERISTICS FOR LD1085#285(referto the test circuits,= -40to 125oC, VIN= 5.85V, CIN =CO =10μF unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit Output Voltage IO=0 mA Tj =25oC 2.821 2.85 2.879 V Output Voltage(Note1) IO=0to3A VIN=4.5to30V 2.793 2.85 2.907 V
ΔVO Line Regulation VIN= 4.5to18VIO= 0mATj =25o C0.2 6 mV
ΔVO Line Regulation VIN= 4.5to18VIO =0mA 0.5 6 mV
ΔVO Load Regulation IO=0to3A Tj =25o C3 15 mV
ΔVO Load Regulation IO=0to3A 7 20 mV Dropout Voltage IO=3A 1.3 1.5 V Quiescent Current VIN≤30V 5 10 mA
ISC Short Circuit Current VIN -VO =5V
VIN -VO= 25V
Thermal Regulation Ta =25oC 30ms Pulse 0.008 0.04 %/W
SVR Supply Voltage Rejection IO=3A f= 120Hz CO =25μF
VIN= 7.85±3V 72 dB Output Noise Voltage B= 10Hzto 10KHz Ta =25oC 0.003 % Temperature Stability 0.5 % Long TermStability 1000hrsTa= 125o C0.5 %
Note1: See short-circuit curvefor availableoutput currentat fixed dropout.
ELECTRICAL CHARACTERISTICS FOR LD1085#33 (referto the test circuits,= -40to 125oC, VIN= 6.3V, CIN =CO =10 μF unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit Output Voltage IO=0 mA Tj =25oC 3.267 3.3 3.333 V Output Voltage(Note1) IO=0to3A VIN=4.9to30V 3.234 3.3 3.366 V
ΔVO Line Regulation VIN= 4.9to18VIO= 0mATj =25o C0.5 6 mV
ΔVO Line Regulation VIN= 4.9to18VIO =0mA 1 6 mV
ΔVO Load Regulation IO=0to3A Tj =25o C3 15 mV
ΔVO Load Regulation IO=0to3A 7 20 mV Dropout Voltage IO=3A 1.3 1.5 V Quiescent Current VIN≤30V 5 10 mA
ISC Short Circuit Current VIN -VO =5V
VIN -VO= 25V
Thermal Regulation Ta =25oC 30ms Pulse 0.008 0.04 %/W
SVR Supply Voltage Rejection IO=3A f= 120Hz CO =25μF
VIN= 8.3±3V 72 dB Output Noise Voltage B= 10Hzto 10KHz Ta =25oC 0.003 % Temperature Stability 0.5 % Long TermStability 1000hrsTa= 125o C0.5 %
Note1: See short-circuit curvefor availableoutput currentat fixed dropout.
LD1085 SERIES
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ELECTRICAL CHARACTERISTICS FOR LD1085#36 (referto the test circuits,= -40to 125oC, VIN= 5.85V, CIN =CO =10μF unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit Output Voltage IO=0 mA Tj =25oC 3.564 3.6 3.636 V Output Voltage(Note1) IO=0to3A VIN=5.2to30V 3.528 3.6 3.672 V
ΔVO Line Regulation VIN= 5.2to18VIO= 0mATj =25o C0.5 10 mV
ΔVO Line Regulation VIN= 5.2to18VIO= 0mA 1 10 mV
ΔVO Load Regulation IO=0to3A Tj =25o C3 15 mV
ΔVO Load Regulation IO=0to3A 7 20 mV Dropout Voltage IO=3A 1.3 1.5 V Quiescent Current VIN≤30V 5 10 mA
ISC Short Circuit Current VIN -VO =5V
VIN -VO= 25V
Thermal Regulation Ta =25oC 30ms Pulse 0.008 0.04 %/W
SVR Supply Voltage Rejection IO=3A f= 120Hz CO =25μF
VIN= 8.6±3V 72 dB Output Noise Voltage B= 10Hzto 10KHz Ta =25oC 0.003 % Temperature Stability 0.5 % Long TermStability 1000hrsTa= 125o C0.5 %
Note1: See short-circuit curvefor availableoutput currentat fixed dropout.
ELECTRICAL CHARACTERISTICS FOR LD1085#50 (referto the test circuits,= -40to 125oC, VIN=8V, CIN =CO =10μF unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit Output Voltage IO=0 mA Tj =25o C4.95 5 5.05 V Output Voltage(Note1) IO=0to3A VIN=6.6to30V 4.9 5 5.1 V
ΔVO Line Regulation VIN= 6.6to20VIO= 0mATj =25o C0.5 10 mV
ΔVO Line Regulation VIN= 6.6to20VIO= 0mA 1 10 mV
ΔVO Load Regulation IO=0to3A Tj =25o C5 20 mV
ΔVO Load Regulation IO=0to3A 10 35 mV Dropout Voltage IO=3A 1.3 1.5 V Quiescent Current VIN≤30V 5 10 mA
ISC Short Circuit Current VIN -VO =5V
VIN -VO= 25V
Thermal Regulation Ta =25oC 30ms Pulse 0.008 0.04 %/W
SVR Supply Voltage Rejection IO=3A f= 120Hz CO =25μF
VIN =10±3V 72 dB Output Noise Voltage B= 10Hzto 10KHz Ta =25oC 0.003 % Temperature Stability 0.5 % Long TermStability 1000hrsTa= 125o C0.5 %
Note1: See short-circuit curvefor availableoutput currentat fixed dropout.
LD1085 SERIES
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ELECTRICAL CHARACTERISTICS FOR LD1085#80 (referto the test circuits,= -40to 125oC, VIN =11V, CIN =CO =10μF unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit Output Voltage IO=0 mA Tj =25o C7.92 8 8.08 V Output Voltage(Note1) IO=0to3A VIN =9.8to30V 7.84 8 8.16 V
ΔVO Line Regulation VIN= 9.8to20VIO= 0mATj =25o C1 18 mV
ΔVO LINe Regulation VIN= 9.8to20VIO= 0mA 2 18 mV
ΔVO Load Regulation IO=0to3A Tj =25o C8 30 mV
ΔVO Load Regulation IO=0to3A 12 60 mV Dropout Voltage IO=3A 1.3 1.5 V Quiescent Current VIN≤30V 5 10 mA
ISC Short Circuit Current VIN -VO =5V
VIN -VO= 25V
Thermal Regulation Ta =25oC 30ms Pulse 0.008 0.04 %/W
SVR Supply Voltage Rejection IO=3A f= 120Hz CO =25μF
VIN =13±3V 71 dB Output Noise Voltage B= 10Hzto 10KHz Ta =25oC 0.003 % Temperature Stability 0.5 % Long TermStability 1000hrsTa= 125o C0.5 %
Note1: See short-circuit curvefor availableoutput currentat fixed dropout.
ELECTRICAL CHARACTERISTICS FOR LD1085#90 (referto the test circuits,= -40to 125oC, VIN =12V, CIN =CO =10μF unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit Output Voltage IO=0 mA Tj =25o C8.91 9 9.09 V Output Voltage(Note1) IO=0 to3A VIN =11to30V 8.82 9 9.18 V
ΔVO Line Regulation VIN =11 to20VIO=0 mATj =25o C1 20 mV
ΔVO Line Regulation VIN =11 to20VIO=0 mA 2 20 mV
ΔVO Load Regulation IO=0 to3A Tj =25o C8 30 mV
ΔVO Load Regulation IO=0 to3A 12 60 mV Dropout Voltage IO=3A 1.3 1.5 V Quiescent Current VIN≤30V 5 10 mA
ISC Short Circuit Current VIN -VO =5V
VIN -VO= 25V
Thermal Regulation Ta =25oC 30ms Pulse 0.008 0.04 %/W
SVR Supply Voltage Rejection IO=3A f= 120Hz CO =25μF
VIN =14±3V 70 dB Output Noise Voltage B= 10Hzto 10KHz Ta =25oC 0.003 % Temperature Stability 0.5 % Long TermStability 1000hrsTa =125o C0.5 %
Note1: See short-circuit curvefor availableoutput currentat fixed dropout.
LD1085 SERIES
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ELECTRICAL CHARACTERISTICS FOR LD1085#120(referto the test circuits,= -40to 125oC, VIN =15V, CIN =CO =10μF unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit Output Voltage IO=0 mA Tj =25oC 11.88 12 12.12 V Output Voltage(Note1) IO=0to3A VIN= 13.8to30V 11.76 12 12.24 V
ΔVO Line Regulation VIN= 13.8to25VIO=0 mATj =25o C1 25 mV
ΔVO Line Regulation VIN= 13.8to25VIO=0 mA 2 25 mV
ΔVO Load Regulation IO=0to3A Tj =25o C12 36 mV
ΔVO Load Regulation IO=0to3A 24 72 mV Dropout Voltage IO=3A 1.3 1.5 V Quiescent Current VIN≤30V 5 10 mA
ISC Short Circuit Current VIN -VO =5V
VIN -VO= 25V
Thermal Regulation Ta =25oC 30ms Pulse 0.008 0.04 %/W
SVR Supply Voltage Rejection IO=3A f= 120Hz CO =25μF
VIN =17±3V 66 dB Output Noise Voltage B= 10Hzto 10KHz Ta =25oC 0.003 % Temperature Stability 0.5 % Long TermStability 1000hrsTa= 125o C0.5 %
Note1: See short-circuit curvefor availableoutput currentat fixed dropout.
ELECTRICAL CHARACTERISTICS FOR LD1085 (referto the test circuits,= -40to 125oC, VIN= 4.25V, CIN =CO =10μF unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit Output Voltage IO =10mA Tj =25oC 1.237 1.25 1.263 V Output Voltage(Note1) IO= 0.01to3A VIN=2.8to 30V 1.225 1.25 1.275 V
ΔVO Line Regulation VIN= 2.75to 16.5VIO =10mATj =25oC 0.015 0.2 %
ΔVO Line Regulation VIN= 2.75to 16.5VIO =10mA 0.035 0.2 %
ΔVO Load Regulation IO= 0.01to3A Tj =25o C0.1 0.3 %
ΔVO Load Regulation IO= 0.01to3A 0.2 0.4 % Dropout Voltage IO=3A 1.3 1.5 V
IO(min) Minimum Load Current VIN =30V 3 10 mA
ISC Short Circuit Current VIN -VO =5V
VIN -VO= 25V
Thermal Regulation Ta =25oC 30ms Pulse 0.01 0.04 %/W
SVR Supply Voltage Rejection IO=3A f= 120Hz CO =25μF
CADJ =25μFVIN= 6.25±3V 75 dB
IADJ Adjust pinCurrent IO =10mA VIN =4.25V 55 120 μA
ΔIADJ Adjust pinCurrent Change VIN= 2.75to 16.5VIO= 0.01to3A 0.2 5 μA Output Noise Voltage B= 10Hzto 10KHz Ta =25oC 0.003 % Temperature Stability 0.5 % Long TermStability 1000hrsTa= 125o C0.5 %
Note1: See short-circuit curvefor availableoutput currentat fixed dropout.
LD1085 SERIES
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TYPICAL CHARACTERISTICS (unless otherwise specifiedTJ=125oC, CIN=CO=10μF)
Output Voltagevs Temperature Output Voltagevs Temperature
Output Voltagevs Temperature
Line Regulationvs Temperature
Short Circuit Currentvs Dropout Voltage
Load Regulationvs Temperature
LD1085 SERIES
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Partno	Mfg	Dc	Qty	Available	Descript
LD1085	ST	N/a	200	avai	3A LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS