LR645
Thermal Characteristics
Package
SO-8
TO-92
TO-220
TO-243AA
†
Block Diagram
θ
ja
°C/W
400
†
170
70
78
†
Trim
–
+
V
OUT
V
IN
Power Dissipation
@ T
A
= 25°C
0.31W
0.74W
1.8W
1.6W
θ
jc
°C/W
156
125
8.3
15
Mounted on FR5 board, 25mm x 25mm x 1.57mm.
Significant P
D
increase possible on ceramic substrate.
Gate
GND
Electrical Characteristics
Test conditions unless otherwise specified: T
A
= 25°C; V
IN
= 15 to 450V, C
OUT
= 0.01µF
Symbol
V
OUT
V
OUT
∆V
OUT
∆V
OUT
V
IN
I
INQ
I
OFF
I
AUX
∆V
OUT
/∆V
IN
e
n
I
PEAK
V
AUX
Output Voltage
Output Voltage over Temperature
1
Line Regulation
Load Regulation
Operating Input Voltage Range
Input Quiescent Current
V
IN
Off-State Leakage Current
Input Current to V
OUT
Ripple Rejection Ratio
1
Noise voltage
1
Output Peak Current
2
External Voltage Applied to V
OUT
50
60
25
30
13.2
15
50
0.1
Parameter
Min
9.3
9.0
Typ
10
10
40
150
Max
10.7
11.5
200
400
450
150
10
200
Unit
V
V
mV
mV
V
µA
µA
µA
dB
µV
mA
V
No Load
V
AUX
≥V
OUT
+1V applied to V
OUT
pin
V
AUX
≥V
OUT
+1V applied to V
OUT
pin
120Hz, No Load
0.01 to 100KHz
C
OUT
= 10µF, V
IN
= 400V
No load
T
J
= -40°C
≤
to + 125°C, No load
V
IN
=15V to 400V, No load
V
IN
=50V, I
OUT
=0 to 3.0mA
Conditions
8-pin, adjustable output voltage version only.
Test conditions unless otherwise specified: T
A
= 25°C; V
IN
= 15 to 450V, C
OUT
= 0.01µF
Symbol
V
OUT
∆V
OUT
∆V
OUT
Parameter
Output Voltage Trim Range
1
Load Regulation at 8V trim
1
Load Regulation at 12V trim
1
Min
8
200
100
Typ
Max
12
400
400
Unit
V
mV
mV
No load
V
IN
=15V, I
OUT
=0 to 1.0mA
V
IN
=50V, I
OUT
=0 to 3.0mA
Conditions
Notes:
1. Guaranteed by design, not tested in production.
2. Pulse test duration < 1msec, Duty cycle < 2%
2
SUPERTEX [ Supertex, Inc ]
