UC1842/3/4/5
UC2842/3/4/5
UC3842/3/4/5
OFFLINE FLYBACK REGULATOR
Power Supply Specifications
1. Input Voltages
2. Line Isolation
3. Switching Frequency
5VAC to 130VA
(50 Hz/60Hz)
3750V
40kHz
5. Output Voltage:
A. +5V,
±5%;
1A to 4A load
Ripple voltage: 50mV P-P Max
B. +12V,
±3%;
0.1A to 0.3A load
Ripple voltage: 100mV P-P Max
C. -12V ,±3%; 0.1A to 0.3A load
Ripple voltage: 100mV P-P Max
4. Efficiency at Full Load 70%
SLOPE COMPENSATION
A fraction of the oscillator ramp can be resistively
summed with the current sense signal to provide
slope compensation for converters requiring duty
cycles over 50%.
7
TI [ TEXAS INSTRUMENTS ]
