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LD1086STN/a1avai1.5A LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS


LD1086 ,1.5A LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORSLD1086SERIES 1.5A LOW DROP FIXED AND ADJUSTABLEPOSITIVE VOLTAGE REGULATORSn TYPICAL DROPOUT VOLTAG ..
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LD1086
1.5A LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1086
SERIES
1.5A LOW DROP FIXED AND ADJUSTABLE
POSITIVE VOLTAGE REGULATORS
May 2000
BLOCK DIAGRAM TYPICAL DROPOUT VOLTAGE1.3V AT 1.5A THREE TERMINAL ADJUSTABLEOR FIXED
OUTPUT VOLATGE1.8V, 2.5V, 2.85V, 3.3V,
3.6V, 5V, 8V, 9V, 12V GUARANTEED OUTPUT CURRENT UP TO
1.5A OUTPUT TOLERANCE ±1% AT25oC AND
±2%IN FULL TEMPERATURE RANGE INTERNALPOWER AND THERMAL LIMIT WIDEOPERATING TEMPERATURE RANGE
-40oC TO 125oC PACKAGEAVAILABLE: TO-220,D2 PAK,2 PAK/A, DPAK, PINOUT COMPATIBILITYWITH STANDARD
ADJUSTABLE VOLTAGE REGULATORS
DESCRIPTION
The LD1086isa LOW DROP Voltage Regulator
ableto provide upto 1.5Aof Output Current.
Dropoutis guaranteedata maximumof 1.5Vat
the maximum output current, decreasing at
lower loads. The LD1086isa pin compatible
with older 3-terminal adjustable regulators, but
has better performancesin term of drop and
output tolerance.A 2.85V output version is
suitable for SCSI-2 active termination. Unlike
PNP regulators, wherea part of the output
current is wasted as quiescent current, the
LD1086 quiescent current flow into the load,so
increase efficency. Onlya 10 μF minimum
capacitoris needed for stability. The deviceis
supplied in TO-220, D2 PAK, D2 PAK/A and
DPAK packages. On chip trimming allows the
regulatorto reacha very tight output voltage
tolerance, within± 1%at25oC.
TO-2202 PAK/A
DPAK (TO-252)2 PAK
1/17
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 DPAK Unit
Rthj-case
Rthj-amb
Thermal Resistance Junction-case
Thermal Resistance Junction-ambient
62.5 o C/W C/W
TO-220 D2 PAK(**) D2 PAK/A (**) DPAK (**) Output Voltage
LD1086V18
LD1086V25
LD1086V28
LD1086V33
LD1086V36
LD1086V50
LD1086V80
LD1086V90
LD1086V120
LD1086D2T18
LD1086D2T25
LD1086D2T28
LD1086D2T33
LD1086D2T36
LD1086D2T50
LD1086D2T80
LD1086D2T90
LD1086D2T120
LD1086D2M18
LD1086D2M25
LD1086D2M28
LD1086D2M33
LD1086D2M36
LD1086D2M50
LD1086D2M80
LD1086D2M90
LD1086D2M120
LD1086DT18
LD1086DT25
LD1086DT28
LD1086DT33
LD1086DT36
LD1086DT50
LD1086DT80
LD1086DT90
LD1086DT120
1.8V
2.5V
2.85V
3.3V
3.6V
12V
LD1086V LD1086D2T LD1086D2M LD1086DT 1.25to 28V
(**) Availablein Tape& Reel withthe suffix ”TR”.
APPLICATION CIRCUIT FOR FIXED AND ADJUSTABLE VERSION
CONNECTION DIAGRAM AND ORDERING NUMBERS (top view) =VREF(1+R2)
TO-220 D2 PAK2 PAK/ADPAK
LD1086 SERIES
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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=0to 1.5A VIN =3.4to30V 1.764 1.8 1.836 V
ΔVO Line Regulation VIN= 3.4to18VIO= 0mATj =25o C0.2 4 mV
ΔVO Line Regulation VIN= 3.4to18VIO =0mA 0.4 4 mV
ΔVO Load Regulation IO=0to 1.5A Tj =25o C0.5 8 mV
ΔVO Load Regulation IO=0to 1.5A 1 16 mV Dropout Voltage IO=1.5A 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 0.01 0.04 %/W
SVR Supply Voltage Rejection IO =1.5A f= 120Hz CO =25μF
VIN= 6.8±3V 82 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#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=0to 1.5A VIN =4.1to30V 2.45 2.5 2.55 V
ΔVO Line Regulation VIN= 4.1to18VIO= 0mATj =25o C0.2 5 mV
ΔVO Line Regulation VIN= 4.1to18VIO =0mA 0.4 5 mV
ΔVO Load Regulation IO=0to 1.5A Tj =25o C0.5 10 mV
ΔVO Load Regulation IO=0to 1.5A 1 18 mV Dropout Voltage IO=1.5A 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 0.01 0.04 %/W
SVR Supply Voltage Rejection IO=1.5Af= 120Hz CO =25μF
VIN= 7.5±3V 81 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.
LD1086 SERIES
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ELECTRICAL CHARACTERISTICS FOR LD1086#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=0to 1.5A 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=0to 1.5A Tj =25o C1 12 mV
ΔVO Load Regulation IO=0to 1.5A 2 20 mV Dropout Voltage IO=1.5A 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 0.01 0.04 %/W
SVR Supply Voltage Rejection IO=1.5Af= 120Hz CO =25μF
VIN= 7.85±3V 80 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#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=0to 1.5A VIN =4.9to30V 3.234 3.3 3.366 V
ΔVO Line Regulation VIN= 4.9to18VIO= 0mATj =25o C0.5 10 mV
ΔVO Line Regulation VIN= 4.9to18VIO= 0mA 1 10 mV
ΔVO Load Regulation IO=0to 1.5A Tj =25o C3 15 mV
ΔVO Load Regulation IO=0to 1.5A 7 25 mV Dropout Voltage IO=1.5A 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 0.01 0.04 %/W
SVR Supply Voltage Rejection IO=1.5Af= 120Hz CO =25μF
VIN= 8.3±3V 79 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.
LD1086 SERIES
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ELECTRICAL CHARACTERISTICS FOR LD1086#36 (referto the test circuits,= -40to 125oC, VIN= 6.6V, CIN =CO =10 μF 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=0to 1.5A 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=0to 1.5A Tj =25o C3 15 mV
ΔVO Load Regulation IO=0to 1.5A 7 25 mV Dropout Voltage IO=1.5A 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 0.01 0.04 %/W
SVR Supply Voltage Rejection IO=1.5Af= 120Hz CO =25μF
VIN= 8.6±3V 78 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#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=0to 1.5A 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=0to 1.5A Tj =25o C5 20 mV
ΔVO Load Regulation IO=0to 1.5A 10 35 mV Dropout Voltage IO=1.5A 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 0.01 0.04 %/W
SVR Supply Voltage Rejection IO=1.5Af= 120Hz CO =25μF
VIN =10±3V 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.
LD1086 SERIES
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ELECTRICAL CHARACTERISTICS FOR LD1086#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=0to 1.5A 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=0to 1.5A Tj =25o C8 30 mV
ΔVO Load Regulation IO=0to 1.5A 12 60 mV Dropout Voltage IO=1.5A 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 0.01 0.04 %/W
SVR Supply Voltage Rejection IO=1.5Af= 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 LD1086#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=0to 1.5A VIN =11 to30V 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=0to 1.5A Tj =25o C8 30 mV
ΔVO Load Regulation IO=0to 1.5A 12 60 mV Dropout Voltage IO=1.5A 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 0.01 0.04 %/W
SVR Supply Voltage Rejection IO=1.5Af= 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.
LD1086 SERIES
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ELECTRICAL CHARACTERISTICS FOR LD1086#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=0to 1.5A 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=0to 1.5A Tj =25o C12 36 mV
ΔVO Load Regulation IO=0to 1.5A 24 72 mV Dropout Voltage IO=1.5A 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 0.01 0.04 %/W
SVR Supply Voltage Rejection IO=1.5Af= 120Hz COUT =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 LD1086 (referto the test circuits,= -40to 125oC, VIN= 4.75V, CI =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= 0.01to1.5A VIN= 2.8to30V 1.225 1.25 1.275 V
ΔVO Line Regulation VIN= 2.8to 16.5VIO =10mATj =25oC 0.015 0.2 %
ΔVO Line Regulation VIN= 2.8to 16.5VIo =10mA 0.035 0.2 %
ΔVO Load Regulation IO= 0.01to1.5A Tj =25o C0.1 0.3 %
ΔVO Load Regulation IO= 0.01to1.5A 0.2 0.4 % Dropout Voltage IO=1.5A 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=1.5Af= 120Hz COUT =25μF
CADJ =25μFVIN= 6.25±3V 88 dB
IADJ Adjust pinCurrent IO =10mA VIN =4.25V 40 120 μA
ΔIADJ Adjust pinCurrent Change VIN= 2.8to 16.5VIO= 0.01 to1.5A 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.
LD1086 SERIES
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Output Voltagevs Temperature
Output Voltagevs Temperature
Line Regulationvs Temperature
Output Voltagevs Temperature
Short CircuitCurrentvs Dropout Voltage
Load Regulationvs Temperature
TYPICAL CHARACTERISTICS (unless otherwise specifiedTJ=125oC, CIN=CO=10μF)
LD1086 SERIES
8/17
Dropout Voltagevs Temperature
AdjustPin Currentvs Input Voltage
AdjustPin Currentvs Output Current
Dropout Voltagevs OutputCurrent
Adjust Pin Currentvs Temperature
QuiescentCurrentvs Output Current
TYPICAL CHARACTERISTICS (Continued)
LD1086 SERIES
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