LD1084 ST Microelectronics, LD1084 Datasheet

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LD1084

Manufacturer Part Number
LD1084
Description
5A LOW DROP POSITIVE VOLTAGE REGULATOR ADJUSTABLE AND FIXED
Manufacturer
ST Microelectronics
Datasheet

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DESCRIPTION
The LD1084 is a LOW DROP Voltage Regulator
able to provide up to 5A of Output Current.
Dropout is guaranteed at a maximum of 1.5V at
the maximum output current, decreasing at lower
loads. The LD1084 is pin to pin compatible with
the older 3-terminal adjustable regulators, but has
better performances in term of drop and output
tolerance .
SCHEMATIC DIAGRAM
May 2003
TYPICAL DROPOUT 1.3V (AT 5A)
THREE TERMINAL ADJUSTABLE OR FIXED
OUTPUT VOLTAGE 1.5, 1.8V, 2.5V, 2.85V,
3.3V, 3.6V, 5V, 8V, 9V, 12V.
GUARANTEED OUTPUT CURRENT UP TO
5A
OUPUT TOLERANCE 1% AT 25°C AND
INTERNAL POWER AND THERMAL LIMIT
WIDE OPERATING TEMPERATURE RANGE
-40°C TO 125°C
PACKAGE AVAILABLE : TO-220, D
D
PINOUT COMPATIBILITY WITH STANDARD
ADJUSTABLE VREG
2% IN FULL TEMPERATURE RANGE
2
PAK/A
REGULATOR ADJUSTABLE AND FIXED
2
PAK,
5A LOW DROP POSITIVE VOLTAGE
A 2.85V output version is suitable for SCSI-2
active termination. Unlike PNP regulators, where
a part of the output current is wasted as quiescent
current, the LD1084 quiescent current flows into
the load, so increase efficiency. Only a 10µF
minimum capacitor is need for stability.
The device is supplied in TO-220, D
D
reach a very tight output voltage tolerance, within
±1% at 25°C.
2
PAK/A. On chip trimming allows the regulator to
TO-220
D
SERIES
LD1084
D
2
PAK/A
2
PAK
2
PAK and
1/18

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LD1084 Summary of contents

Page 1

... The LD1084 is a LOW DROP Voltage Regulator able to provide Output Current. Dropout is guaranteed at a maximum of 1.5V at the maximum output current, decreasing at lower loads. The LD1084 is pin to pin compatible with the older 3-terminal adjustable regulators, but has better performances in term of drop and output tolerance . ...

Page 2

... LD1084 SERIES ABSOLUTE MAXIMUM RATINGS Symbol V DC Input Voltage I I Output Current O P Power Dissipation D T Storage Temperature Range stg T Operating Junction Temperature Range op Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied ...

Page 3

... LD1084V18 LD1084V25 LD1084V28 LD1084V33 LD1084V36 LD1084V50 LD1084V80 LD1084V90 LD1084V120 LD1084V (*) Available in Tape & Reel with the suffix "R" for fixed versions and "-R" for adjustable version LECTRICAL CHARACTERISTICS OF LD1084#15 (V otherwise specified.) Symbol Parameter V Output Voltage O V Line Regulation O V Load Regulation ...

Page 4

... SVR Supply Voltage Rejection eN RMS Output Noise Voltage (% Temperature Stability S Long Term Stability NOTE 1: See short-circuit current curve for available output current at fixed dropout. ELECTRICAL CHARACTERISTICS OF LD1084#25 (V otherwise specified.) Symbol Parameter V Output Voltage O V Line Regulation O V Load Regulation ...

Page 5

... ELECTRICAL CHARACTERISTICS OF LD1084#285 (V unless otherwise specified.) Symbol Parameter V Output Voltage O V Line Regulation O V Load Regulation O V Dropout Voltage d I Quiescent Current q I Short Circuit Current sc Termal Regulation SVR Supply Voltage Rejection eN RMS Output Noise Voltage (% Temperature Stability S Long Term Stability NOTE 1: See short-circuit current curve for available output current at fixed dropout ...

Page 6

... SVR Supply Voltage Rejection eN RMS Output Noise Voltage (% Temperature Stability S Long Term Stability NOTE 1: See short-circuit current curve for available output current at fixed dropout. ELECTRICAL CHARACTERISTICS OF LD1084#5 (V otherwise specified.) Symbol Parameter V Output Voltage O V Line Regulation O V Load Regulation ...

Page 7

... ELECTRICAL CHARACTERISTICS OF LD1084#8 (V otherwise specified.) Symbol Parameter V Output Voltage O V Line Regulation O V Load Regulation O V Dropout Voltage d I Quiescent Current q I Short Circuit Current sc Termal Regulation SVR Supply Voltage Rejection eN RMS Output Noise Voltage (% Temperature Stability S Long Term Stability NOTE 1: See short-circuit current curve for available output current at fixed dropout ...

Page 8

... SVR Supply Voltage Rejection eN RMS Output Noise Voltage (% Temperature Stability S Long Term Stability NOTE 1: See short-circuit current curve for available output current at fixed dropout. ELECTRICAL CHARACTERISTICS OF LD1084 (V otherwise specified.) Symbol Parameter V Output Voltage O V Line Regulation O V Load Regulation ...

Page 9

... TYPICAL CHARACTERISTICS (unless otherwise specified T Figure 1 : Short Circuit Current vs Dropout Voltage Figure 2 : Line Regulation vs Temperature Figure 3 : Quiescent Current vs Temperature = 25°C, C =10 F (tant.), Figure 4 : Output Voltage vs Temperature Figure 5 : Load Regulation vs Temperature Figure 6 : Quiescent Current vs Output Voltage LD1084 SERIES =22 F (tant.) O 9/18 ...

Page 10

... LD1084 SERIES Figure 7 : Quiescent Current vs Input Voltage Figure 8 : Dropout Voltage vs Output Current Figure 9 : Supply Voltage Rejection vs Output Current 10/18 Figure 10 : Dropout Voltage vs Temperature Figure 11 : Supply Voltage Rejection vs Temperature Figure 12 : Supply Voltage Rejection vs Frequency ...

Page 11

... Figure 13 : Adjust Pin Current vs Output Current Figure 14 : Reference Voltage vs Temperature Figure 15 : Load Regulation vs Temperature Figure 16 : Adjust Pin Current vs Temperature Figure 17 : Line Regulation vs Temperature Figure 18 : Minimum Load Currennt vs Temperature LD1084 SERIES 11/18 ...

Page 12

... LD1084 SERIES Figure 19 : Supply Voltage Rejection vs Temperature Figure 20 : Supply Voltage Rejection vs Frequency Figure 21 : Stability 12/18 Figure 22 : Supply Voltage Rejection vs Output Current Figure 23 : Stability Figure 24 : Line Transient V =14 to 15V, I =200mA F(tant =10 F(tant ...

Page 13

... F(tant Figure 28 : Line Transient =10 F(tant =12 to 13V ADJ ADJ Figure 29 : Load Transient V = =10 F(tant =10 F(tant ADJ LD1084 SERIES =200mA F(tant), C =10 F(tant =0 F(tant), C =10 F(tant 13/18 ...

Page 14

... LD1084 SERIES DIM. MIN. A 4.40 C 1. 0.49 F 0.61 F1 1.14 F2 1.14 G 4.95 G1 2 13.0 L5 2.65 L6 15.25 L7 6.2 L9 3.5 DIA. 3.75 14/18 TO-220 MECHANICAL DATA mm. TYP MAX. 4.60 1.32 2.72 1.27 0.70 0.88 1.70 1.70 5.15 2.7 10.40 16.4 14.0 2.95 15.75 6.6 3.93 3.85 inch MIN. TYP. MAX. 0.173 0.181 0.048 0.051 0.094 0.107 0.050 0.019 0.027 0.024 0.034 0.044 0.067 0.044 0.067 0.194 0.203 0.094 0.106 ...

Page 15

... MIN. 4.6 0.173 2.69 0.098 0.23 0.001 0.93 0.027 1.7 0.044 0.6 0.017 1.36 0.048 9.35 0.352 8 10.4 0.393 8.5 5.28 0.192 15.85 0.590 1.4 0.050 1.75 0.055 3.2 0.094 0.4 8˚ LD1084 SERIES inch TYP. MAX. 0.181 0.106 0.009 0.036 0.067 0.023 0.053 0.368 0.315 0.409 0.335 0.208 0.624 0.055 0.068 0.126 0.016 0˚ 8˚ P011P6G 15/18 ...

Page 16

... LD1084 SERIES DIM. MIN. A 4.40 A1 2.49 B 0.7 B2 1.14 C 0.45 C2 1. 1.27 16/ PAK/A MECHANICAL DATA mm. TYP MAX. 4.60 2.69 0.93 1.7 0.60 1.36 9.35 10.4 5.28 15.85 1.4 inch MIN. TYP. MAX. 0.173 0.181 0.098 0.106 0.027 0.036 0.044 0.067 0.017 0.023 0.047 0.053 0.352 0.368 0.393 0.409 0.192 0.208 0.590 0.106 0.050 ...

Page 17

... LD1084 SERIES 2 Tape & Reel D PAK-P DIM. MIN 12 10.50 Bo 15.70 Ko 4.80 Po 3.9 P 11.9 17/ PAK-D PAK/A-P PAK/A MECHANICAL DATA mm. TYP MAX. 180 13.0 13.2 14.4 10.6 10.70 15.80 15.90 4.90 5.00 4.0 4.1 12.0 12.1 inch MIN. TYP. MAX. 7.086 0.504 0.512 0.519 0.795 2.362 0.567 0.413 0.417 0.421 0.618 0.622 0.626 0.189 ...

Page 18

... LD1084 SERIES Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice ...

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