LR12 SUTEX [Supertex, Inc], LR12 Datasheet - Page 4

• Manufacturer Part Number: LR12
• Description: High Input Voltage Adjustable 3-Terminal Linear Regulator
• Manufacturer: SUTEX [Supertex, Inc]

Typical Application Circuits
V
Figure 3: High Voltage Adjustable Constant Current Source
IN
V
Figure 1: High Input Voltage, 5.0V Output Linear Regulator
=17V to 100V
IN
=15V to 100V
V
LR12
IN
ADJ
V
V
IN
to 100V
OUT
* Required for conditions where V
+
= 15V
-
C1
Figure 2: SMPS Start-Up Circuit
Vcc
LR12
V
IN
LR12
ADJ
V
IN
V
V Auxiliary
OUT
ADJ
FB
V
R2
18.2KΩ
OUT
±1%
4
*
PWM IC
100nF
R
R1
6.04KΩ
±1%
IN
is less than V
V
V
I
OUT =
OUT
OUT
C2
100nF
= 1.20V 1+ R2
=5.0V
1.20V
OUT
R
.
R1
+ I
ADJ
Vout1
Vout2
R2
+
-
+
-
LR12
A081605