The devices are designed to operate from an input voltage supply range between 8 V and 40 V. This input supply should be well regulated. If the input supply is located more than a few inches from the UC184xA-SP converter, additional bulk capacitance may be required in addition to the ceramic bypass capacitors. A tantalum capacitor with a value of 47 µF is a typical choice; however, this may vary depending upon the output power being delivered.

Power supply specifications:

1. Input voltage: 95 VAC to 130 VAC (50 Hz/60 Hz)
2. Line isolation: 3750 V
3. Switching frequency: 40 kHz
4. Efficiency full load: 70%
5. Output voltage:
   1. +5 V, ±5%; 1- to 4-A load, ripple voltage: 50 mVP-P max
   2. +12 V, ±3%; 0.1- to 0.3-A load, ripple voltage: 100 mVP-P max
   3. –12 V, ±3%; 0.1- to 0.3-A load, ripple voltage: 100 mVP-P max

Figure 25. Offline Flyback Regulator