TLV431A, TLV431B
V
in
LED
R1
R3
V+
V
out
V
in
R2
R4
L.E.D. indicator is ‘ON’ when V
in
is
between the upper and lower limits,
Lower limit
+
1
)
R1 V
R2 ref
Upper limit
+
1
)
R3 V
R4 ref
V
in
tV
ref
uV
ref
V
out
V+
≈
0.74 V
Figure 28. Voltage Monitor
Figure 29. Single−Supply Comparator with
Temperature−Compensated Threshold
25 V
1N5305
2.0 mA
T1 = 330
W
to 8.0
W
T1
10 k
Calibrate
8.0
W
38 V
330
5k
1%
50 k
1%
10 kW
V
1.0 kW
V
500 k
1%
1.0 M
1%
100 kW
V
1.0 MW
V
+
360 k
470
mF
1.0
mF
*
25 V
−
0.05
mF
V
out
−5.0
V
* Thermalloy
*
THM 6024
*
Heatsink on
*
LP Package.
56 k
10 k
Tone
Volume
47 k
25 k
Range
R
x
+
R x
+
V out
D
W
Range
V
Figure 30. Linear Ohmmeter
Figure 31. Simple 400 mW Phono Amplifier
http://onsemi.com
9