Datasheet LD1585CD2T90, LD1585CD2T80, LD1585CD2T50, LD1585CD2T33, LD1585CD2T28 Datasheet (SGS Thomson Microelectronics)

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1/17September 2003

■ TYPICAL DROPOUT 1.2V

■ FAST TRANSIENT RESPONSE

■ THREE TERMINAL ADJUSTABLE OR FIXED

OUTPUT VOLTAGE 1.5V 1.8V, 2.5V, 2.85V,

3.3V, 5V, 8V, 9V, 12V.

■ GUARANTEED OUTPUT CURRENT UP TO

■ OUPUT TOLERANCE ±1% AT 25°C AND

±2% IN FU LL TEMPERATURE RANGE

■ INTERNAL P OWER AND THERMAL LIMIT

■ WIDE OPERATING TEMPERATURE RANGE

0°C TO 125°C

■ PACKAGE AVAILABLE : TO-220, D

PAK,

PAK/A

■ PINOUT COMPATIBILITY WITH STANDARD

ADJUSTABLE VREG

DESCRIPTION

The LD1585C is a LOW DROP Voltage Regulator able to provide up to 5A of Output Current. Dropout is guaranteed at a maximum of 1.4V at the maximum output current, decreas ing at lower loads. The device h as been i mproved to be utilized in low voltage applications where transient response and minimum input voltage are critical. The most important feature of the device con sist i n lower dropout voltage and very f as t transient

response. A 2.85V output version is suitable for SCSI-2 active terminat ion. Unlike PNP regul ato rs, where a pa rt of the output current is wasted as quiescent current, the LD1585C quiescent current flows into the load, so increase efficiency. Only a 10µF minimum capacitor is n eed for stability. The device is supplied in TO-220, D

PAK and

PAK/A. On chi p t rim ming allows the regulator to reach a very tight output voltage tolera nc e, within ±1% at 25°C.

LD1585C

SERIES

5A LOW DROPOUT FAST RESPONSE

POSITIVE VOLTAGE REGULATOR ADJUSTABLE AND FIXED

SCHEMATIC DIAGRAM

TO-220

D2PAK D2PAK/A

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LD1585C SERIES

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ABSOLUTE MAXIMUM RATINGS

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied.

THERMAL DATA

APPLICATION CIRCUITS

Symbol Parameter² Value Unit

DC Input Voltage

30 V

Output Current

Internally Limited mA

Power Dissipation

Internally Limited mW

stg

Storage Temperature Range

-55 to +150 °C

Operating Junction Temperature Range

0 to +125 °C

Symbol Parameter TO-220

PAK

Unit

thj-case

Thermal Resistance Junction-case

3 3 °C/W

thj-amb

Thermal Resistance Junction-ambient

50 62.5 °C/W

VO=V

REF

(1 + )

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LD1585C SERIES

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CONNECTION DIAGRAM (top view)

ORDERING CODES

(*) Available in Tape & Reel with the suffix "R" for fixed version and "-R" for adjustable version.

TO-220

PAK D2PAK/A

TO-220

PAK (*) D2PAK/A (*)

OUTPUT VOLTAGE

LD1585CV15 LD1585CD2T15 LD1585CD2M15 1.5 V LD1585CV18 LD1585CD2T18 LD1585CD2M18 1.8 V LD1585CV25 LD1585CD2T25 LD1585CD2M25 2.5 V LD1585CV28 LD1585CD2T28 LD1585CD2M28 2.85 V LD1585CV33 LD1585CD2T33 LD1585CD2M33 3.3 V LD1585CV50 LD1585CD2T50 LD1585CD2M50 5.0 V LD1585CV80 LD1585CD2T80 LD1585CD2M80 8.0 V LD1585CV90 LD1585CD2T90 LD1585CD2M90 9.0 V LD1585CV12 LD1585CD2T120 LD1585CD2M120 12.0 V

LD1585CV LD1585CD2T LD1585CD2M ADJ

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LD1585C SERIES

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ELECTRICAL CHARACTERISTICS OF LD158 5#15 (VI=4.5V, CI=CO=10µF, TJ= 0 to 125°C, unless otherwise specified.)

NOTE 1: See short-circuit current curve for available output current at fixed dropout.

ELECTRICAL CHARACTERISTICS OF LD158 5#18 (VI=4.8V, CI=CO=10µF, TJ= 0 to 125°C, unless otherwise specified.)

NOTE 1: See short-circuit current curve for available output current at fixed dropout.

Symbol Parameter Test Conditions Min. Typ. Max. Unit

Output Voltage IO=0mA TJ= 25°C 1.485 1.5 1.515 V

=0to5A VI= 3 to 25V (note 1) 1.47 1.5 1.53 V

∆V

Line Regulation IO=0mA VI=3to15V TJ= 25°C 0.005 0.2 %

=0mA VI= 3 to 15V 0.005 0.2 %

∆V

Load Regulation IO=0to5A TJ= 25°C 0.05 0.3 %

= 0 to 5A 0.05 0.5 %

Dropout Voltage IO=5 A 1.2 1.4 V

Quiescent Current VI≤ 25V 5 10 mA

Short Circuit Current VI-VO= 5V 5.5 7 A Termal Regulation T

= 25°C, 30ms pulse 0.004 0.02 %/W

SVR Supply Voltage Rejection f = 120 Hz, C

=25µF, IO=5A

I-VO

=3± 1V

60 75 dB

eN RMS Output Noise Voltage

(% of V

)

= 25°C f =10Hz to 10KHz 0.003 %

S Temperature Stability 0.5 % S Long Term Stability T

= 125°C 1000Hrs 0.03 1 %

Symbol Parameter Test Conditions Min. Typ. Max. Unit

Output Voltage IO=0mA TJ= 25°C 1.782 1.8 1.818 V

=0to5A VI= 3.3 to 25V (note 1) 1.764 1.8 1.836 V

∆V

Line Regulation IO=0mA VI= 3.3 to 15V TJ= 25°C 0.005 0.2 mV

=0mA VI= 3.3 to 15V 0.005 0.2

∆V

Load Regulation IO=0to5A TJ= 25°C 0.05 0.3 mV

= 0 to 5A 0.05 0.5

Dropout Voltage IO=5 A 1.2 1.4 V

Quiescent Current VI≤ 25V 5 10 mA

Short Circuit Current VI-VO= 5.5V 5.5 7 A Termal Regulation T

= 25°C, 30ms pulse 0.004 0.02 %/W

SVR Supply Voltage Rejection f = 120 Hz, C

=25µF, IO=5A

I-VO

=3± 1V

60 75 dB

eN RMS Output Noise Voltage

(% of V

)

= 25°C f =10Hz to 10KHz 0.003 %

S Temperature Stability 0.5 % S Long Term Stability T

= 125°C 1000Hrs 0.03 1 %

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LD1585C SERIES

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ELECTRICAL CHARACTERISTICS OF LD158 5#25 (VI=5.5V, CI=CO=10µF, TJ= 0 to 125°C, unless otherwise specified.)

NOTE 1: See short-circuit current curve for available output current at fixed dropout.

ELECTRICAL CHARACTERI S TICS OF LD1585#285 (VI=5.85V, CI=CO=10µF,TJ= 0 to 125°C, unles s otherwise specified.)

NOTE 1: See short-circuit current curve for available output current at fixed dropout.

Symbol Parameter Test Conditions Min. Typ. Max. Unit

Output Voltage IO=0mA TJ= 25°C 2.475 2.5 2.525 V

=0to5A VI= 4 to 25V (note 1) 2.45 2.5 2.55 V

∆V

Line Regulation IO=0mA VI=4to16V TJ= 25°C 0.005 0.2 mV

=0mA VI= 4 to 16V 0.005 0.2

∆V

Load Regulation IO=0to5A TJ= 25°C 0.05 0.3 mV

= 0 to 5A 0.05 0.5

Dropout Voltage IO=5 A 1.2 1.4 V

Quiescent Current VI≤ 25V 5 10 mA

Short Circuit Current VI-VO= 5.5V 5.5 7 A Termal Regulation T

= 25°C, 30ms pulse 0.004 0.02 %/W

SVR Supply Voltage Rejection f = 120 Hz, C

=25µF, IO=5A

I-VO

=3± 1V

60 75 dB

eN RMS Output Noise Voltage

(% of V

)

= 25°C f =10Hz to 10KHz 0.003 %

S Temperature Stability 0.5 % S Long Term Stability T

= 125°C 1000Hrs 0.03 1 %

Symbol Parameter Test Conditions Min. Typ. Max. Unit

Output Voltage IO=0mA TJ= 25°C 2.821 2.85 2.879 V

=0to5A VI= 4.5 to 30V (note 1) 2.793 2.85 2.907 V

∆V

Line Regulation IO=0mA VI= 4.5 to 18V TJ= 25°C 0.005 0.2 mV

=0mA VI= 4.5 to 18V 0.005 0.2

∆V

Load Regulation IO=0to5A TJ= 25°C 0.05 0.3 mV

= 0 to 5A 0.05 0.5

Dropout Voltage IO=5 A 1.2 1.4 V

Quiescent Current VI≤ 25V 5 10 mA

Short Circuit Current VI-VO= 5.5V 5.5 7 A Termal Regulation T

= 25°C, 30ms pulse 0.004 0.02 %/W

SVR Supply Voltage Rejection f = 120 Hz, C

=25µF, IO=5A

I-VO

=3± 1V

60 75 dB

eN RMS Output Noise Voltage

(% of V

)

= 25°C f =10Hz to 10KHz 0.003 %

S Temperature Stability 0.5 % S Long Term Stability T

= 125°C 1000Hrs 0.03 1 %

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LD1585C SERIES

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ELECTRICAL CHARACTERISTICS OF LD158 5#33 (VI=6.3V, CI=CO=10µF, TJ= 0 to 125°C, unless otherwise specified.)

NOTE 1: See short-circuit current curve for available output current at fixed dropout.

ELECTRICAL CHARACTERISTICS OF LD158 5#50 (VI=8V, CI=CO=10µF, TJ= 0 to 125°C, unless otherwise specified.)

NOTE 1: See short-circuit current curve for available output current at fixed dropout.

Symbol Parameter Test Conditions Min. Typ. Max. Unit

Output Voltage IO=0mA TJ= 25°C 3.267 3.3 3.333 V

=0to5A VI= 4.8 to 25V (note 1) 3.234 3.35 3.366 V

∆V

Line Regulation IO=0mA VI= 4.8 to 18V TJ= 25°C 0.005 0.2 mV

=0mA VI= 4.9 to 18V 0.005 0.2

∆V

Load Regulation IO=0to5A TJ= 25°C 0.05 0.3 mV

= 0 to 5A 0.05 0.5

Dropout Voltage IO=5 A 1.2 1.4 V

Quiescent Current VI≤ 25V 5 10 mA

Short Circuit Current VI-VO= 5.5V 5.5 7 A Termal Regulation T

= 25°C, 30ms pulse 0.004 0.02 %/W

SVR Supply Voltage Rejection f = 120 Hz, C

=25µF, IO=5A

I-VO

=3± 1V

60 75 dB

eN RMS Output Noise Voltage

(% of V

)

= 25°C f =10Hz to 10KHz 0.003 %

S Temperature Stability 0.5 % S Long Term Stability T

= 125°C 1000Hrs 0.03 1 %

Symbol Parameter Test Conditions Min. Typ. Max. Unit

Output Voltage IO=0mA TJ= 25°C 4.95 5 5.05 V

=0to5A VI= 6.5 to 30V (note 1) 4.9 5 5.1 V

∆V

Line Regulation IO=0mA VI= 6.5 to 20V TJ= 25°C 0.005 0.2 mV

=0mA VI= 6.5 to 20V 0.005 0.2

∆V

Load Regulation IO=0to5A TJ= 25°C 0.05 0.3 mV

= 0 to 5A 0.05 0.5

Dropout Voltage IO=5 A 1.2 1.4 V

Quiescent Current VI≤ 25V 5 10 mA

Short Circuit Current VI-VO= 5.5V 5.5 7 A Termal Regulation T

= 25°C, 30ms pulse 0.004 0.02 %/W

SVR Supply Voltage Rejection f = 120 Hz, C

=25µF, IO=5A

I-VO

=3± 1V

60 75 dB

eN RMS Output Noise Voltage

(% of V

)

= 25°C f =10Hz to 10KHz 0.003 %

S Temperature Stability 0.5 % S Long Term Stability T

= 125°C 1000Hrs 0.03 1 %

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LD1585C SERIES

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ELECTRICAL CHARACTERISTICS OF LD158 5#80 (VI=11V, CI=CO=10µF, TJ= 0 to 125°C, unless otherwise specified.)

NOTE 1: See short-circuit current curve for available output current at fixed dropout.

ELECTRICAL CHARACTERISTICS OF LD158 5#90 (VI=12V, CI=CO=10µF, TJ= 0 to 125°C, unless otherwise specified.)

NOTE 1: See short-circuit current curve for available output current at fixed dropout.

Symbol Parameter Test Conditions Min. Typ. Max. Unit

Output Voltage IO=0mA TJ= 25°C 7.92 8 8.08 V

=0to5A VI= 9.5 to 30V (note 1) 7.84 8 8.16 V

∆V

Line Regulation IO=0mA VI= 9.5 to 20V TJ= 25°C 0.005 0.2 mV

=0mA VI= 9.5 to 20V 0.005 0.2

∆V

Load Regulation IO=0to5A TJ= 25°C 0.05 0.3 mV

= 0 to 5A 0.05 0.5

Dropout Voltage IO=5 A 1.2 1.4 V

Quiescent Current VI≤ 25V 5 10 mA

Short Circuit Current VI-VO= 5.5V 5.5 7 A Termal Regulation T

= 25°C, 30ms pulse 0.004 0.02 %/W

SVR Supply Voltage Rejection f = 120 Hz, C

=25µF, IO=5A

I-VO

=3± 1V

60 75 dB

eN RMS Output Noise Voltage

(% of V

)

= 25°C f =10Hz to 10KHz 0.003 %

S Temperature Stability 0.5 % S Long Term Stability T

= 125°C 1000Hrs 0.03 1 %

Symbol Parameter Test Conditions Min. Typ. Max. Unit

Output Voltage IO=0mA TJ= 25°C 8.91 9 9.09 V

=0to5A VI= 10.5 to 30V (note 1) 8.82 9 9.18 V

∆V

Line Regulation IO=0mA VI=10.5to20V TJ= 25°C 0.005 0.2 mV

=0mA VI= 10.5 to 20V 0.005 0.2

∆V

Load Regulation IO=0to5A TJ= 25°C 0.05 0.3 mV

= 0 to 5A 0.05 0.5

Dropout Voltage IO=5 A 1.2 1.4 V

Quiescent Current VI≤ 25V 5 10 mA

Short Circuit Current VI-VO= 5.5V 5.5 7 A Termal Regulation T

= 25°C, 30ms pulse 0.004 0.02 %/W

SVR Supply Voltage Rejection f = 120 Hz, C

=25µF, IO=5A

I-VO

=3± 1V

60 75 dB

eN RMS Output Noise Voltage

(% of V

)

= 25°C f =10Hz to 10KHz 0.003 %

S Temperature Stability 0.5 % S Long Term Stability T

= 125°C 1000Hrs 0.03 1 %

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LD1585C SERIES

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ELECTRICAL CHARACTERISTICS OF LD158 5#120 (VI=15V, CI=CO=10µF, TJ= 0 to 125°C, unless otherwise specified.)

NOTE 1: See short-circuit current curve for available output current at fixed dropout.

ELECTRICAL CHARACTERISTICS OF LD1585# (VI=4.25V, CI=CO=10µF, TJ= 0 to 125°C, unless otherwise specified.)

NOTE 1: See short-circuit current curve for available output current at fixed dropout.

Symbol Parameter Test Conditions Min. Typ. Max. Unit

Output Voltage IO=0mA TJ= 25°C 11.88 12 12.12 V

=0to5A VI= 13.5 to 30V (note 1) 11.76 12 12.24 V

∆V

Line Regulation IO=0mA VI=13.5to25V TJ= 25°C 0.005 0.2 mV

=0mA VI= 13.5 to 25V 0.005 0.2

∆V

Load Regulation IO=0to5A TJ= 25°C 0.05 0.3 mV

= 0 to 5A 0.05 0.5

Dropout Voltage IO=5 A 1.2 1.4 V

Quiescent Current VI≤ 25V 5 10 mA

Short Circuit Current VI-VO= 5.5V 5.5 7 A Termal Regulation T

= 25°C, 30ms pulse 0.004 0.02 %/W

SVR Supply Voltage Rejection f = 120 Hz, C

=25µF, IO=5A

I-VO

=3± 1V

60 75 dB

eN RMS Output Noise Voltage

(% of V

)

= 25°C f =10Hz to 10KHz 0.003 %

S Temperature Stability 0.5 % S Long Term Stability T

= 125°C 1000Hrs 0.03 1 %

Symbol Parameter Test Conditions Min. Typ. Max. Unit

Output Voltage IO= 10mA VI-VO=3V TJ= 25°C 1.237 1.25 1.263 V

= 10mA to 5AVI-VO=1.5 to 25V

(note 1)

1.225 1.25 1.275 V

∆V

Line Regulation IO= 10mA VI= 2.75 to 15V TJ= 25°C 0.015 0.2 %

= 10mA VI= 2.75 to 15V 0.1 0.2 %

∆V

Load Regulation IO= 10mA to 5ATJ= 25°C 0.1 0.3 %

= 0 to 5A 0.25 0.5 %

Dropout Voltage IO= 5A 1.2 1.4 V

O(min)

Minimum Load Current VI= 25V 3 10 mA

Short Circuit Current VI-VO= 5.5V 5.5 7 A Termal Regulation T

= 25°C, 30ms pulse 0.004 0.02 %/W

SVR Supply Voltage Rejection f = 120 Hz, C

=25µF, C

ADJ

=25µF,

=5A VI-VO=3± 1V

60 75 dB

ADJ

Adjust Pin Current IO=10mA 50 100 µA

∆I

ADJ

Adjust Pin Current Change IO= 10mA to 5A VI= 3 to 25V (note 1) 0.2 5 µA

eN RMS Output Noise Voltage

(% of V

)

= 25°C f =10Hz to 10KHz 0.003 %

S Temperature Stability 0.5 % S Long Term Stability T

= 125°C 1000Hrs 0.5 %

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LD1585C SERIES

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TYPICAL CHARACTERISTICS

(unless otherwise specified Tj= 25°C, CI=CO=10µFtant)

Figure1 : O utput Voltage vs Temperature

Figure2 : Short Circuit Current vs Dropout

Voltage

Figure3 : Line Regulation vs Temperature

Figure4 : Line Regulation vs Temperature

Figure5 : Load Regula tion vs Temperature

Figure6 : Load Regula tion vs Temperature

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LD1585C SERIES

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Figure7 : Dropout Voltage vs Temperature

Figure8 : Dropout Voltage vs Output Current

Figure9 : Adjust Pin Current vs I nput Voltage

Figure10 : Adjust Pin Current vs Temperature

Figure11 : Adjust Pin Current Change vs

Temperature

Figure12 : Quiescent Current vs Temperature

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LD1585C SERIES

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Figure13 : Reference Voltage vs Temperature

Figure14 : Minimum Load Current vs

Temperature

Figure15 : Supply Voltage Rejection vs Output Current

Figure16 : Supply Voltage Rejection vs Output Current

Figure17 : Supply Voltage Rejection vs Frequency

Figure18 : Supply Voltage Rejection vs Frequency

Page 12

LD1585C SERIES

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Figure19 : Supply Voltage Rejection vs Temperature

Figure20 : Supply Voltage Rejection vs Temperature

Figure21 : Line Transient

Figure22 : Load Transient

Figure23 : Load Transient

15 to16V,I

200mA,C

=1µ

F(tant),C

=10µ

F(tant)

=15V,

=0.1to 5A,

=10µF(tant),

=10µF(tant

)

=7V,

=0.1to5A,

=10µ

F(tant),C

=10µ

F(tant)

Page 13

LD1585C SERIES

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DIM.

mm. inch

MIN. TYP MAX. MIN. TYP. MAX.

A 4.40 4.60 0.173 0.181 C 1.23 1.32 0.048 0.051 D 2.40 2.72 0.094 0.107

D1 1.27 0.050

E 0.49 0.70 0.019 0.027

F 0.61 0.88 0.024 0.034 F1 1.14 1.70 0.044 0.067 F2 1.14 1.70 0.044 0.067

G 4.95 5.15 0.194 0.203 G1 2.4 2.7 0.094 0.106 H2 10.0 10.40 0.393 0.409

L2 16.4 0.645 L4 13.0 14.0 0.511 0.551 L5 2.65 2.95 0.104 0.116 L6 15.25 15.75 0.600 0.620 L7 6.2 6.6 0.244 0.260 L9 3.5 3.93 0.137 0.154

DIA. 3.75 3.85 0.147 0.151

TO-220 MECHANICAL DAT

P011C

Page 14

LD1585C SERIES

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DIM.

mm. inch

MIN. TYP MAX. MIN. TYP. MAX.

A 4.4 4.6 0.173 0.181 A1 2.49 2.69 0.098 0.106 A2 0.03 0.23 0.001 0.009

B 0.7 0.93 0.027 0.036 B2 1.14 1.7 0.044 0.067

C 0.45 0.6 0.017 0.023 C2 1.23 1.36 0.048 0.053

D 8.95 9.35 0.352 0.368 D1 8 0.315

E 10 10.4 0.393 0.409 E1 8.5 0.335

G 4.88 5.28 0.192 0.208

L 15 15.85 0.590 0.624 L2 1.27 1.4 0.050 0.055 L3 1.4 1.75 0.055 0.068

M 2.4 3.2 0.094 0.126 R 0.4 0.016

V2 0˚ 8˚ 0˚ 8˚

D2PAK MEC

HANICAL DATA

P011P6G

Page 15

LD1585C SERIES

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DIM.

mm. inch

MIN. TYP MAX. MIN. TYP. MAX.

A 4.40 4.60 0.173 0.181

A1 2.49 2.69 0.098 0.106

B 0.7 0.93 0.027 0.036

B2 1.14 1.7 0.044 0.067

C 0.45 0.60 0.017 0.023

C2 1.21 1.36 0.047 0.053

D 8.95 9.35 0.352 0.368

E 10 10.4 0.393 0.409

G 4.88 5.28 0.192 0.208

L 15 15.85 0.590 0.106

L2 1.27 1.4 0.050 0.055

D2PAK/A MECHA

NICAL DATA

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LD1585C SERIES

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DIM.

mm. inch

MIN. TYP MAX. MIN. TYP. MAX.

A 180 7.086 C 12.8 13.0 13.2 0.504 0.512 0.519 D 20.2 0.795 N 60 2.362

T 14.4 0.567 Ao 10.50 10.6 10.70 0.413 0.417 0.421 Bo 15.70 15.80 15.90 0.618 0.622 0.626 Ko 4.80 4.90 5.00 0.189 0.193 0.197 Po 3.9 4.0 4.1 0.153 0.157 0.161

P 11.9 12.0 12.1 0.468 0.472 0.476

Tape & Reel D

PAK-P2PAK-D2PAK/A-P2PAK/A MECHANICAL DATA

Page 17

LD1585C SERIES

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