LR8K4-G Supertex, LR8K4-G Datasheet - Page 3

• 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

Electrical Characteristics
Functional Block Diagram
(Test conditions unless otherwise specified: -40°C < T
Thermal Characteristics
Package
TO-92
TO-243AA
TO-252
Note:
DV
†
Sym
OUT
T
I
I
C2
OUT
ADJ
LIMIT
Mounted on FR4 board, 25mm x 25mm x 1.57mm.
/DV
IN
Supertex inc.
Parameter
Minimum output current
Adjust output current
Minimum output load capacitance
Ripple rejection ratio
Junction temperature limit
VIN
Power Dissipation
1235 Bordeaux Drive, Sunnyvale, CA 94089
(cont.)
LR8
@ T
0.74W
Overtemp &
Overcurrent
1.6W
2.5W
A
A
< 85°C.)
= 25°C
Element
Pass
Min
125
5.0
1.0
50
-
1.2V
3
Typ
0.3
10
60
-
-
Max
0.5
15
10µA
-
-
-
6.25
°C/W
125
15
θ
Tel: [phone]
jc
Units Conditions
mA
dB
µA
µF
°C
VOUT
ADJ
120Hz, V
Includes R1 and load current
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www.supertex.com
OUT
= 5V
°C/W
170
78
50
θ
ja
†
†
LR8