Number Of Pins | 8 Pins |
Total Power Supply and Zener Current | 30MA |
Current Sense and Voltage feedback Inputs | -0.3 ~ +5.5 V |
Junction Temperature | +150C |
Operation Temperature Range | 0 ~ 70 C |
Storage Temperature Range | -65 ~ +150 C |
The UTC UC3844/3845 are high performance fixed frequency current mode controllers that specifically designed for Off-Line and DC to DC converter applications with minimal external parts count. The differences between UC3844 and UC3845 are the maximum duty cycle ranges and under-voltage lockout thresholds. The UC3844 ideally suited to off-line applications with UVLO thresholds of 16V(ON) and 10V(OFF), and UC3845 has UVLO thresholds of 8.5V(ON) and 7.6V(OFF) for lower voltage application
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