LD1085V50 STMicroelectronics, LD1085V50 Datasheet

IC REG LDO POS 5.0V 3.0A TO-220

LD1085V50

Manufacturer Part Number
LD1085V50
Description
IC REG LDO POS 5.0V 3.0A TO-220
Manufacturer
STMicroelectronics
Datasheet

Specifications of LD1085V50

Regulator Topology
Positive Fixed
Voltage - Output
5V
Voltage - Input
Up to 30V
Voltage - Dropout (typical)
1.3V @ 3A
Number Of Regulators
1
Current - Output
3A
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
5 V
Output Type
Fixed
Dropout Voltage (max)
1.5 V at 3 A
Output Current
3 A
Line Regulation
10 mV
Load Regulation
10 mV
Voltage Regulation Accuracy
1 %
Maximum Operating Temperature
+ 125 C
Mounting Style
Through Hole
Minimum Operating Temperature
- 40 C
Primary Input Voltage
30V
Output Voltage Fixed
5V
Dropout Voltage Vdo
1.3V
No. Of Pins
3
Operating Temperature Range
-40°C To +125°C
Filter Terminals
Through Hole
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Limit (min)
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
497-3436-5
Features
Description
The LD1085xx is a low drop voltage regulator
able to provide up to 3 A of output current.
Dropout is guaranteed at a maximum of 1.2 V at
the maximum output current, decreasing at lower
loads. The LD1085xx 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 LD1085xx quiescent current flows
Table 1.
July 2009
Typical dropout 1.3 V (at 3 A)
Three terminal adjustable or fixed output
voltage 1.5 V, 1.8 V, 2.5 V, 3.3 V, 5 V, 12 V.
Automotive grade product: adjustable V
only in TO-220 full pack package
Guaranteed output current up to 3 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, TO-220FP,
DPAK, D
Pinout compatibility with standard adjustable
VREG
2
Device summary
3 A low drop positive voltage regulator adjustable and fixed
PAK, D
LD1085XX15
LD1085XX18
2
LD1085XX
PAK/A
OUT
Doc ID 6738 Rev 25
Part numbers
into the load, so increase efficiency. Only a 10 µF
minimum capacitor is need for stability.
The device is supplied in TO-220, TO-220FP,
DPAK, D
allows the regulator to reach a very tight output
voltage tolerance, within ± 1 % at 25 °C.
The LD1085xx is available as automotive grade in
TO-220FP package only, for the option of
adjustable output voltage whose commercial part
number is shown in the
This device is qualified according to the
specification AEC-Q100 of the automotive
market, in the temperature range -40 °C to
125 °C, and the statistical tests PAT, SYL, SBL are
performed.
DPAK
2
PAK and D
TO-220
LD1085XX25
LD1085XX33
LD1085XX50
2
PAK/A. On chip trimming
D
2
Table 11: Order
PAK
LD1085xx
TO-220FP
D
2
PAK/A
codes.
www.st.com
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LD1085V50 Summary of contents

Page 1

A low drop positive voltage regulator adjustable and fixed Features ■ Typical dropout 1 ■ Three terminal adjustable or fixed output voltage 1.5 V, 1.8 V, 2 ■ ...

Page 2

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

Page 3

Diagram Figure 1. Schematic diagram Doc ID 6738 Rev 25 3/28 ...

Page 4

Pin configuration Figure 2. Pin connections (top view) TO-220 2 D PAK 4/28 D DPAK Doc ID 6738 Rev 25 TO-220FP 2 PAK/A ...

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 6/28 V Doc ID 6738 Rev 25 R ⎛ ⎞ 2 ⋅ ------ - ⎝ ⎠ O REF R 1 ...

Page 7

Electrical characteristics Table 4. Electrical characteristics of LD1085#15 Symbol Parameter (1) V Output voltage O ΔV Line regulation O ΔV Load regulation O V Dropout voltage d I Quiescent ...

Page 8

Table 5. Electrical characteristics of LD1085#18 Symbol Parameter (1) V Output voltage O ΔV Line regulation O ΔV Load regulation O V Dropout voltage d I Quiescent current q I ...

Page 9

Table 6. Electrical characteristics of LD1085#25 Symbol Parameter (1) V Output voltage O ΔV Line regulation O ΔV Load regulation O V Dropout voltage d I Quiescent current q I ...

Page 10

Table 7. Electrical characteristics of LD1085#33 Symbol Parameter (1) V Output voltage O ΔV Line regulation O ΔV Load regulation O V Dropout voltage d I Quiescent current q I ...

Page 11

=10 µ Table 8. Electrical characteristics of LD1085#50 Symbol Parameter (1) V Output voltage O ΔV Line regulation O ΔV Load regulation O V Dropout voltage d I Quiescent ...

Page 12

Table 9. Electrical characteristics of LD1085# Symbol Parameter (1) V Output voltage O ΔV Line regulation O ΔV Load regulation O V Dropout voltage d I Minimum load current O(min) I ...

Page 13

Table 10. Electrical characteristics of LD1085PY (Automotive Grade) Symbol Parameter (1) V Output voltage O ΔV Line regulation O ΔV Load regulation O V Dropout voltage d I Minimum load current ...

Page 14

Typical application Unless otherwise specified T Figure 4. Output voltage vs. temperature Figure 6. Output voltage vs. temperature Figure 8. Line regulation vs. temperature 14/ ° µ Figure 5. ...

Page 15

Figure 10. Dropout voltage vs. temperature Figure 12. Adjust pin current vs. temperature Figure 13. Quiescent current vs. temperature Figure 14. Line regulation vs. temperature Figure 11. Dropout voltage vs. output current Figure 15. Supply voltage rejection vs. output current ...

Page 16

Figure 16. Supply voltage rejection vs. frequency Figure 18. Minimum load current vs. temperature Figure 20. Stability 16/28 Figure 17. Supply voltage rejection vs. temperature Figure 19. Stability, V Figure 21. Line transient V =12 ...

Page 17

Figure 22. Line transient V =12 to 13V, I =200mA 1µF(tant =1µF ADJ Figure 24. Load transient V =12V, I =0. 1µF(tant =1µF ADJ ...

Page 18

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 19

TO-220 mechanical data mm. Dim. Min. Typ. A 4.40 C 1.23 D 2.40 D1 1.27 E 0.49 F 0.61 F1 1.14 F2 1.14 G 4.95 G1 2.4 H2 10.0 L2 16.4 L4 13.0 L5 2.65 L6 15.25 L7 6.2 L9 ...

Page 20

Dim. Min. A 4.40 B 2.5 D 2.5 E 0.45 F 0.75 F1 1.15 F2 1.15 G 4.95 G1 2 28.6 L4 9.8 L5 2 DIA. 3 20/28 TO-220FP mechanical data mm. ...

Page 21

DPAK mechanical data mm. Dim. Min. Typ. A 2.2 A1 0.9 A2 0.03 B 0.64 b4 5.2 C 0. 5.1 E 6.4 E1 4.7 e 2.28 e1 4 (L1) 2.8 L2 ...

Page 22

Dim. Min. A 4.4 A1 2.49 A2 0.03 B 0.7 B2 1.14 C 0.45 C2 1. 1.27 L3 1 0° 22/ PAK mechanical ...

Page 23

D PAK/A mechanical data mm. Dim. Min. Typ. A 4.40 A1 2.49 A2 0.03 B 0.7 B1 0.8 B2 1.14 C 0.45 C2 1. 8 1.27 M 2.4 ...

Page 24

Tape & reel DPAK-PPAK mechanical data Dim. Min 12 6.80 Bo 10.40 Ko 2.55 Po 3.9 P 7.9 24/28 mm. Typ. Max. Min. 330 13.0 13.2 0.504 0.795 2.362 22.4 6.90 7.00 ...

Page 25

Tape & reel D PAK-P mm. Dim. Min. Typ 12.8 13 10.50 10.6 Bo 15.70 15.80 Ko 4.80 4.90 Po 3.9 4.0 P 11.9 12 PAK-D PAK/A-P PAK/A ...

Page 26

... Order codes Table 11. Order codes TO-220 TO-220FP LD1085V50 LD1085V LD1085P (1) LD1085PY 1. Automotive Grade products. 26/28 Packages 2 D PAK DPAK (T&R) LD1085DT15R LD1085D2T33R LD1085D2T-R Doc ID 6738 Rev 25 Output voltage 2 D PAK/A (T&R) 1.5 V LD1085D2M18R 1.8 V LD1085D2M25R 2.5 V LD1085D2M33R 3.3 V 5.0 V LD1085D2M-R ADJ ...

Page 27

Revision history Table 12. Document revision history Date Revision 07-Oct-2004 12 08-Feb-2005 13 01-Mar-2005 14 22-May-2006 15 10-Nov-2006 16 04-Apr-2007 17 07-Jun-2007 18 05-Dec-2007 19 29-Jan-2008 20 18-Feb-2008 21 09-Apr-2008 22 14-Jul-2008 23 22-Aug-2008 24 28-Jul-2009 25 Changes Mistake ...

Page 28

... 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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