500 kHz switching ceiling and 96% duty cycle
Switching frequency goes up to 500 kHz, which lets you shrink the transformer or inductor core size compared to a 100 kHz design — the trade-off is higher switching losses in the MOSFET and snubber components. The 96% maximum duty cycle gives headroom for low-dropout operation in a buck converter or wide input-range flyback; at 96 % the off-time is only 4 % of the period, so the transformer reset voltage needs careful design.
Topology flexibility: boost, buck, flyback, forward
This current-mode controller supports step-up, step-down, and step-up/step-down topologies — boost, buck, flyback, and forward converters are all on the table. The single output drives an external MOSFET via a transistor driver stage; the control loop uses frequency compensation through the COMP pin, and the part includes frequency control (oscillator timing via Rt/Ct).
Vcc supply range is 10 V to 30 V, which covers standard bias rails from 12 V to 24 V industrial supplies. No synchronous rectifier option; the output is a single transistor driver, not a totem-pole pair.
14-SOIC package — rework-friendly footprint
Housed in a 14-SOIC (0.154-inch width, 3.90 mm body), surface-mount package. The 1.27 mm pitch is easy to hand-solder and inspect under a microscope; no thermal pad underneath, so the power dissipation path is through the leads and copper plane. Ships in Tube form.