LD1085V STMicroelectronics, LD1085V Datasheet
LD1085V
Manufacturer Part Number
LD1085V
Description
IC REG LDO POSITIVE ADJ TO-220
Manufacturer
STMicroelectronics
Type
Voltage Regulatorr
Specifications of LD1085V
Regulator Topology
Positive Adjustable
Voltage - Output
Adjustable
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
1.25 V to 28 V
Output Type
Adjustable
Dropout Voltage (max)
1.5 V at 3 A
Output Current
3 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
Current, Output
3 mA
Current, Supply
55 μA
Package Type
TO-220
Regulation, Line
0.015 %
Regulation, Load
0.1 %
Regulator Type
Low Dropout, Positive Voltage Out
Resistance, Thermal, Junction To Case
3 °C/W
Temperature, Operating, Range
-40 to +125 °C
Voltage, Dropout
1.3 V
Voltage, Input
4.25 V
Voltage, Noise
0.003 %
Voltage, Output
1.25 V
Voltage, Supply, Rejection Ratio
72 dB
Primary Input Voltage
30V
Output Voltage Fixed
28V
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
497-1482-5
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LD1085V120
Manufacturer:
ST
Quantity:
6 892
Company:
Part Number:
LD1085V25
Manufacturer:
TOSHIBA
Quantity:
2 000
Part Number:
LD1085V33
Manufacturer:
ST
Quantity:
20 000
Features
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■
■
■
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■
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■
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.
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
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
PAK
LD1085xx
TO-220FP
(order codes).
D
2
PAK/A
1/28
28
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LD1085V 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
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 3
Table 9. Electrical characteristics of LD1085 4. 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 4
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 5
... 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 LD1085D2T18R LD1085DT18R LD1085D2T33R LD1085D2T-R 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 ADJ ...