LR8_07 Datasheet, PDF (4/9 Pages) Supertex, Inc – High Input Voltage Adjustable 3-Terminal Linear Regulator

Typical Application Circuits
Figure 2: SMPS Start-Up Circuit
V_IN = (V_OUT + 12V) to 450V
V_AUXILIARY
V_IN
V_OUT
ADJ
LR8
V_CC
FB _{PWM IC}
LR8
+
V_OUT1
-
+
V_OUT2
-
Figure 3: High Voltage Adjustable Constant Current Source
+
V_IN V_OUT
ADJ
V_IN = (V_OUT + 12V) to 450V
LR8
-
R
I_OUT
=
1.20V
R
1.0µF
LOAD
4