Datasheet

2
Supertex inc.
www.supertex.com
Doc.# DSFP-LR8
B080113
LR8
Absolute Maximum Ratings
Parameter Value
V
IN
input voltage (voltages ref to ADJ) -0.5V to +480V
Output voltage range -0.5V to +470V
Operating ambient temperature range -40°C to +85°C
Operating junction temperature range -40°C to +125°C
Storage temperature range -65°C to +150°C
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 specications is not implied. Exposure to absolute maximum rating conditions for
extended periods may affect device reliability.
Electrical Characteristics
(Test conditions unless otherwise specied: -40°C < T
A
< 85°C.)
Sym Parameter Min Typ Max Units Conditions
V
IN
- V
OUT
Input to output voltage difference 12 - 450 V ---
V
OUT
Overall output voltage regulation
1.14 1.20 1.26 V
13.2V < V
IN
< 400V,
R
1
= 2.4kΩ, R
2
= 0
375 400 425 V R
1
= 2.4kΩ, R
2
= 782kΩ
ΔV
OUT
Line regulation - 0.003 0.01 %/V
17V < V
IN
< 400V, V
OUT
= 5V,
I
OUT
= 0.5mA
ΔV
OUT
Load regulation - 1.4 3.0 %
V
IN
= 17V, V
OUT
= 5V,
0.5mA <I
OUT
< 10mA
ΔV
OUT
Temperature regulation -1 - +1 %
V
IN
= 17V, V
OUT
= 5V, I
OUT
= 10mA,
-40°C < T
A
< 85°C
I
OUT
Output current limit
10 - 30 mA T
J
< 85°C, V
IN
- V
OUT
= 12V
- - 0.5 mA T
J
> 125°C, V
IN
- V
OUT
= 450V
TO-92TO-252 (D-PAK)
Product Marking
YY = Year Sealed
WW = Week Sealed
L = Lot Number
= “Green” Packaging
Si YYWW
LR8K4
LLLLLLL
Y = Last Digit of Year Sealed
W = Code for Week Sealed
L = Lot Number
= “Green” Packaging
SiLR
8
YWLL
TO-92
TO-252 (D-PAK)
Pin Conguration
LR8W
W = Code for Week Sealed
= “Green” Packaging
TO-243AA (SOT-89)
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
VIN
ADJ
VOUT
ADJ
VIN
VOUT
VIN
ADJ
VOUT
VOUT
TO-243AA (SOT-89)
Ordering Information
Part Number Package Options Packing
LR8K4-G TO-252 (D-PAK) 2000/Reel
LR8N3-G TO-92 1000/Bag
LR8N3-G P002 TO-92 2000/Reel
LR8N3-G P003 TO-92 2000/Reel
LR8N3-G P005 TO-92 2000/Reel
LR8N3-G P013 TO-92 2000/Reel
LR8N3-G P014 TO-92 2000/Reel
LR8N8-G TO-243AA (SOT-89) 2000/Reel
-G denotes a lead (Pb)-free / RoHS compliant package
Package θ
ja
TO-252 (D-PAK) 81
O
C/W
TO-92 132
O
C/W
TO-243AA (SOT-89) 133
O
C/W
Typical Thermal Resistance