Datasheet

µA723
PRECISION VOLTAGE REGULATORS
SLVS057D – AUGUST 1972 – REVISED JULY 1999
8
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
1000 pF
R2
R1
V
I
R
SC
R3
R4
V
O
I
OS
l
knee
I
O
REF
V
CC+
V
C
OUTPUT
V
Z
CURR LIM
CURR SENS
IN+
V
CC–
FREQ COMP
IN–
µA723
Regulated Output,
V
O
Figure 6. Foldback Current Limiting
R1
R2
2N2580
V
I
R
SC
= 1 Ω
2 kΩ
500 pF
1N1826
REF
V
CC+
V
C
OUTPUT
V
Z
CURR LIM
CURR SENS
IN+
V
CC–
FREQ COMP
IN–
µA723
R4 =
3 kΩ
R3 =
3 kΩ
Regulated Output,
V
O
Figure 7. Positive Floating Regulator