UTC2030 Просмотр технического описания (PDF) - Unspecified
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UTC2030 Datasheet PDF : 14 Pages
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UTC2030
LINEAR INTEGRATED CIRCUIT
In average conditions,the continuous power supplied is lower.The music power/continuous power ratio is greater in
case than for the case of regulated supplied,with space saving and cost reduction.
Vo(V)
26
24
22
20
18
Fig.27 DC characteristics of
50W non-regulated supply
Ripple
(Vp-p)
Ripple
4
220V
2
Vout
0
Vo
μ 3300 F
0
0.4
0.8
1.2 1.6
2.0
Io(A)
Mains(220V)
+20%
+15%
—+10%
-10%
-15%
-20%
Secondary
voltage
23.0V
22.1V
21.1V
19.2V
17.3V
16.3V
15.3V
Io=0
34.5V
33.1V
31.7V
29.0V
25.9V
24.5V
23.0V
DC output Voltage(Vo)
Io=0.1A
33.6V
32.2V
30.8V
28.0V
25.2V
23.8V
22.4V
Io=1A
30.0V
28.6V
27.3V
24.8V
22.2V
20.8V
19.4V
Short Circuit Protection
The UTC2030 has an original circuit which limits the current of the output transistors.This function can be
considered as being peak power limiting rather than simple current limiting.It reduces the possibility that the device
gets damaged during an accidental short circuit from AC output to Ground.
Thermal Shut-Down
The presence of a thermal limiting circuit offers the following advantages:
1).An overload on the output (even if it is permanent),or an above limit ambient temperture can be easily supported
since the Tj can not be higher than 150°C
2).The heat-sink can have a smaller factor of safety compared with that of a convential circuit,There is no possibity
of device damage due to high junction temperature increase up to 150, the thermal shut-down simply reduces the
power dissipation and the current consumption.
YOUWANG ELECTRONICS CO.LTD
13
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