LR8K4-G Supertex, LR8K4-G Datasheet - Page 2

• Manufacturer Part Number: LR8K4-G
• Description: Linear Regulators - Standard 450V Adj 3 Termnl
• Manufacturer: Supertex

Specifications of LR8K4-G

• Polarity: Positive
• Number Of Outputs: 1
• Output Type: Adjustable
• Output Voltage: 1.26 V
• Output Current: 20 mA
• Line Regulation: 0.01 % / V
• Load Regulation: 3 %
• Input Voltage Max: 480 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Maximum Power Dissipation: 2500 mW
• Mounting Style: SMD/SMT
• Output Voltage Tolerance: +/- 5 %
• Voltage Regulation Accuracy: 5 %
• Package / Case: TO-252 (DPAK)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

-G indicates package is RoHS compliant (‘Green’)
Absolute Maximum Ratings
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent
damage to the device. These are stress ratings only, and functional operation of the
device at these or any other conditions beyond those indicated in the operational sections
of the specifications is not implied. Exposure to absolute maximum rating conditions for
extended periods may affect device reliability.
Electrical Characteristics
(Test conditions unless otherwise specified: -40°C < T
Ordering Information
Parameter
V
Output voltage range
Operating ambient temperature range
Operating junction temperature range
Storage temperature range
IN
V
IN
ΔV
ΔV
ΔV
input voltage (voltages ref to ADJ)
Device
Sym
V
V
I
I
- V
OUT
OUT
LR8
OUT
OUT
OUT
OUT
OUT
OUT
Supertex inc.
Parameter
Input to output voltage difference
Overall output voltage regulation
Overall output voltage regulation
Line regulation
Load regulation
Temperature regulation
Output current limit
Output current limit
LR8K4-G
(D-PAK)
TO-252
Package Options
LR8N3-G
1235 Bordeaux Drive, Sunnyvale, CA 94089
TO-92
A
-40°C to +125°C
-65°C to +150°C
< 85°C.)
-40°C to +85°C
-0.5V to +480V
-0.5V to +470V
TO-243AA
LR8N8-G
(SOT-89)
1.14
Min
375
12
10
-1
Value
-
-
-
2
0.003
1.20
Typ
400
1.4
-
-
-
-
Pin Configurations
Product Marking
Package may or may not include the following marks: Si or
Package may or may not include the following marks: Si or
Package may or may not include the following marks: Si or
Max
1.26
0.01
450
425
3.0
0.5
+1
30
VOUT
TO-252 (K4)
Tel: [phone]
LR8W
Units Conditions
%/V
mA
mA
Si YYWW
Y W L L
LLLLLLL
%
%
Si L R
V
V
V
VIN
LR8K4
8
TO-243AA (SOT-89) (N8)
TO-243AA (SOT-89) (N8)
---
13.2V < V
R1 = 2.4KΩ, R2 = 782KΩ
0.5mA <I
V
T
T
R1 = 2.4KΩ, R2 = 0
17V < V
I
V
-40°C < T
ADJ
VOUT
OUT
W = Code for Week Sealed
J
J
IN
IN
Y = Last Digit of Year Sealed
W = Code for Week Sealed
L = Lot Number
< 85°C, V
> 125°C, V
TO-252 (K4)
TO-92 (N3)
= 17V, V
= 17V, V
= 0.5mA
YY = Year Sealed
WW = Week Sealed
L = Lot Number
www.supertex.com
IN
OUT
= “Green” Packaging
< 400V, V
A
= “Green” Packaging
IN
VIN
< 85°C
< 400V,
< 10mA
= “Green” Packaging
OUT
OUT
IN
VOUT
IN
- V
= 5V,
= 5V, I
- V
ADJ
TO-92 (N3)
OUT
OUT
VIN
OUT
= 12V
OUT
= 450V
= 5V,
ADJ
= 10mA,
VOUT
LR8