| Description: High Performance Current Mode PWM Controlers
The AX 3842 is high performance fixed frequency current mode controllers. That is specifically designed for Off-Line and DC To DC converter applications .
These integrated circuits feature a trimmed oscillator for precise duty cycle control. A temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET. Also included are protective features consisting of input and reference undervoltage lockouts each with hysteresis, cycle-by-cycle current limiting, programmable output deadtime, and a latch for single pulse metering. The AX3842 has UVLO thresholds of 16V(on) and 10V(off), ideally suited off-line applications.
Features:
， Trimmed oscillator for precise frequency c ontrol
，
Current mode operation to 500 kHz
， Automatic feed forward compensation
，
Latching PWM for cycle- by- cycle current l imiting
，
Internally trimmed reference with undervoltage lockout
， High current t otem pole output
， Undervoltage lockout with hysteresis
， Low startup and operating current
Package: DIP-8, SO-8
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