LR8
Ordering Information
Package Options
TO-92
TO-243AA*
TO-252
LR8N3
LR8N8
LR8K4
* Same as SOT-89. Product supplied on 2000 piece carrier tape reels.
Product marking for TO-243AA:
LR8❋
where ❋ = 2-week alpha date code
Absolute Maximum Ratings
VIN Input Voltage
Output Voltage Range
Operating Ambient Temperature Range
Operating Junction Temperature Range
Storage Temperature Range
*Voltages referenced to ADJ.
-0.5V to +480V*
-0.5V to +470V
-40°C to +85°C
-40°C to +125°C
-65°C to +150°C
Pin Configurations
TAB
1
2
3
TO-243AA
(SOT-89)
TO-92
TO-243AA
TO-252
2 (TAB)
123
TO-92
1
3
TO-252
(D-PAK)
VIN
VOUT
ADJ
1
2
3
1
2, TAB
3
1
2 (TAB)
3
Electrical Characteristics
Test conditions unless otherwise specified: -40°C < TA < 85°C.
Symbol Parameter
Min Typ Max
VIN - VOUT Input to Output Voltage Difference
12
450
VOUT
Overall Output Voltage Regulation
1.14 1.20 1.26
VOUT
Overall Output Voltage Regulation
375 400 425
∆VOUT
Line Regulation
0.003 0.01
∆VOUT
Load Regulation
1.4
3.0
∆VOUT
Temperature Regulation
-1
+1
IOUT
Output Current Limit
10
20
IOUT
Output Current Limit
0.5
IOUT
Minimum Output Current
0.3
0.5
IADJ
Adjust Output Current
5
10
15
C2
Minimum Output Load Capacitance
1
DVOUT/DVIN Ripple Rejection Ratio
50
60
TLIMIT
Junction Temperature Limit
125
Units
V
V
V
%/V
%
%
mA
mA
mA
µA
µF
dB
°C
Test Conditions
12V<VIN<400V, R1=2.4KΩ, R2=0
R1=2.4KΩ, R2=782KΩ
15V<VIN<400V, VOUT=5V, IOUT=0.5mA
VIN=15V, VOUT=5V, 0.5mA<IOUT<10mA
VIN=15V, VOUT=5V, IOUT=10mA,
-40°C<TA<85°C
TJ < 85°C, VIN - VOUT = 10V
TJ > 125°C, VIN - VOUT = 450V
Includes R1 and load current
120Hz, VOUT = 5V
2