LD1084V STMicroelectronics, LD1084V Datasheet

IC REG LDO POS ADJ 5.0A TO-220

LD1084V

Manufacturer Part Number
LD1084V
Description
IC REG LDO POS ADJ 5.0A TO-220
Manufacturer
STMicroelectronics
Datasheet

Specifications of LD1084V

Regulator Topology
Positive Adjustable
Voltage - Output
Adjustable
Voltage - Input
Up to 30V
Voltage - Dropout (typical)
1.3V @ 5A
Number Of Regulators
1
Current - Output
5A
Operating Temperature
-40°C ~ 125°C
Mounting Type
Through Hole
Package / Case
TO-220-3 (Straight Leads)
Number Of Outputs
1
Polarity
Positive
Input Voltage Max
30 V
Output Voltage
1.25 V to 28 V
Output Type
Adjustable
Dropout Voltage (max)
1.5 V
Output Current
5 A
Line Regulation
0.2 %
Load Regulation
0.3 %
Voltage Regulation Accuracy
1 %
Maximum Operating Temperature
+ 125 C
Mounting Style
Through Hole
Minimum Operating Temperature
- 40 C
Reference Voltage
1.25 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Limit (min)
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
497-3413-5

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Features
Description
The LD1084XX is a low drop voltage regulator
able to provide up to 5 A of output current.
Dropout is guaranteed at a maximum of 1.5 V at
the maximum output current, decreasing at lower
loads. The LD1084XX is pin to pin compatible
with the older 3-terminal adjustable regulators, but
has better performances in term of drop and
output tolerance.
A 2.85 V 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 LD1084XX quiescent current flows
into the load, so increase efficiency. Only a 10 µF
minimum capacitor is need for stability.
Table 1.
July 2009
Typical dropout 1.3 V (at 5 A)
Three terminal adjustable output voltage
Guaranteed output current up to 5 A
Output tolerance ± 1 % at 25 °C and ± 2 % in
full temperature range
Internal power and thermal limit
Wide operating temperature range -40 °C to
125 °C
Package available: TO-220
Pinout compatibility with standard adjustable
VREG
Device summary
Order code
LD1084V
5 A low drop positive voltage regulator adjustable
Doc ID 9035 Rev 9
The device is supplied in TO-220. On chip
trimming allows the regulator to reach a very tight
output voltage tolerance, within ± 1 % at 25 °C.
Output voltage
Adjustable
TO-220
LD1084XX
www.st.com
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LD1084V Summary of contents

Page 1

... Only a 10 µF minimum capacitor is need for stability. Table 1. Device summary Order code LD1084V July 2009 The device is supplied in TO-220. On chip trimming allows the regulator to reach a very tight output voltage tolerance, within ± °C. Output voltage ...

Page 2

Contents 1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 3

Diagram Figure 1. Schematic diagram Doc ID 9035 Rev 9 3/16 ...

Page 4

Pin configuration Figure 2. Pin connections (top view) 4/16 Doc ID 9035 Rev 9 ...

Page 5

Maximum ratings Table 2. 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 Note: Absolute maximum ratings are those values ...

Page 6

Schematic application Figure 3. Application circuit 6/ Doc ID 9035 Rev 9 R ⎛ ⎞ 2 ⋅ ------ - ⎝ ⎠ REF R 1 ...

Page 7

Electrical characteristics Table 4. Electrical characteristics of LD1084XX Symbol Parameter (1) V Output voltage O ΔV Line regulation O ΔV Load regulation O V Dropout voltage d I Minimum load ...

Page 8

Typical application Unless otherwise specified T Figure 4. Short circuit current vs. dropout voltage Figure 6. Quiescent current vs. temperature Figure 8. Load regulation vs. temperature 8/ ° µF (tant.), ...

Page 9

Figure 10. Quiescent current vs. input voltage Figure 11. Dropout voltage vs. output current Figure 12. Supply voltage rejection vs. output current Figure 14. Supply voltage rejection vs. temperature Figure 13. Dropout voltage vs. temperature Figure 15. Supply voltage rejection ...

Page 10

Figure 16. Adjust pin current vs. output current Figure 18. Load regulation vs. temperature Figure 20. Line regulation vs. temperature 10/16 Figure 17. Reference voltage vs. temperature Figure 19. Adjust pin current vs. temperature Figure 21. Minimum load current vs. ...

Page 11

Figure 22. Supply voltage rejection vs. temperature Figure 24. Stability Figure 26. Stability Figure 23. Supply voltage rejection vs. frequency Figure 25. Supply voltage rejection vs. output current Figure 27. Line transient V =14 to 15V, I =200mA ...

Page 12

Figure 28. Line transient V =12 to 13V, I =200mA 1µF(tant =5µs ADJ s f Figure 30. Load transient 1µF(tant), C ...

Page 13

Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: www.st.com. ® ...

Page 14

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 14/16 TO-220 mechanical data ...

Page 15

Revision history Table 5. Document revision history Date Revision 07-Oct-2004 3 08-Feb-2005 4 16-Jun-2005 5 04-Apr-2007 6 07-Jun-2007 7 08-Apr-2008 8 29-Jul-2009 9 Changes Mistake order codes - Table 1. Mistake U.M. Load Regulation - V ==> mV. Order ...

Page 16

... Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...

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