LR8 Datasheet, PDF (3/16 Pages) Supertex, Inc – High Input Voltage Adjustable 3-Terminal Linear Regulator

LR8
1.0 ELECTRICAL CHARACTERISTICS
ABSOLUTE MAXIMUM RATINGS^†
V_IN Input voltage (voltages ref to ADJ).............................................................................................................................. -0.5 to +480V
Output voltage range.......................................................................................................................................................... 0.5 to +470V
Operating ambient temperature range ........................................................................................................................... -40°C to +85°C
Operating junction temperature range ......................................................................................................................... -40°C to +125°C
Storage temperature .................................................................................................................................................... -65°C to +150°C
† Notice: Stresses above those listed under “Maximum Ratings” may cause permanent damage to the device. This is
a stress rating only and functional operation of the device at those or any other conditions above those indicated in the
operational listings of this specification is not implied. Exposure to maximum rating conditions for extended periods
may affect device reliability.
1.1 Electrical Specifications
TABLE 1-1: ELECTRICAL CHARACTERISTICS ¹
Symbol Parameter
Min Typ Max Units Conditions
V_IN- V_OUT
V_OUT
Input to output voltage difference 12
Overall output voltage regulation ^1.14
375
Line regulation
1.20
400
0.003
450
1.26
425
0.01
∆V_OUT Load regulation
1.4 3.0
Temperature regulation
-1
+1
I_OUT
Output current limit
10
30
0.5
I_OUT
Minimum output current
0.3 0.5
I_ADJ
Adjust output current
5.0
10
15
C_LOAD Minimum output load capacitance 1.0
∆V_OUT/∆V_IN Ripple rejection ratio
50
60
T_LIMIT
Junction temperature limit
125
V
V
13.2V < V_IN< 400V,
R₁= 2.4kΩ, R₂= 0
V R₁= 2.4kΩ, R₂= 782kΩ
%/V
17V < V_IN< 400V, V_OUT= 5V,
I_OUT= 0.5mA
%
V_IN= 17V, V_OUT= 5V,
0.5mA <I_OUT< 10mA
%
V_IN= 17V, V_OUT= 5V, I_OUT= 10mA,
-40°C < T_A< 85°C
mA T_J< 85°C, V_IN- V_OUT= 12V
mA T_J> 125°C, V_IN- V_OUT= 450V
mA Includes R₁ and load current
µA
µF
dB 120Hz, V_OUT= 5V
°C
1 Test Conditions unless otherwise specified: -40°C <T_A < 85°C
TABLE 1-2:
TYPICAL THERMAL RESISTANCE
Package
TO-252 (D-PAK)
TO-92
TO-243AA (SOT-89)
θ_ja
81°C/W
132°C/W
133°C/W
TABLE 1-3: THERMAL CHARACTERISTICS
Package
TO-92
TO-243AA (SOT-89)
TO-252 (D-PAK)
Power Dissipation
@T_A = 2.5°C
0.74W
1.6W
2.5W
1 Mounted on FR4 board, 25mm x 25mm x 1.57mm
θ_jc
°C/W
125
15
6.25
θ_ja
°C/W
170
78¹
50¹
 2015 Microchip Technology Inc.
DS20005399A-page 3