STK740-441 Datasheet (Sanyo Semicon Device) - 3.3V/5A Single Output Separate Excitation Chopper Regulator

STK740-441, 3.3V/5A Single Output Separate Excitation Chopper Regulator

Number Pin name Description No.6106 *3/10 STK740-441 Test Circuit 12 11 10 9 8 7 6 5 4 3 2 1 ON/OFF Vo adjust DC INPUT C1 FB L1 C2 OUTPUT (3.3V) GND C1 C2 L1 FB : 220µF/10V (OS capacitor) : 2200µF/6.3V : 30µH : Ferrite-bead core GND Overvoltage Protection Circuit In a constant-

Ordering number:EN6106 Thick Film Hybrid IC STK740-441 3.3V/5A Single Output Separate Excitation Chopper Regulator Overview The STK740-441 is a separate-excitation step-down chopper regulator hybrid IC for the secondstage circuit and optimal as a 3.3V local power supply for use in logic circuit that includes both 5V and 3.3V systems.

This IC incorporates in the package all the necessary circuits for a chopper regulator including power switch, error amplifier, soft start, shutdown type output s

STK740-441 Features

* Adoption of Sanyo IMST ; Insulated Metal Substrate Technology, allows the circuit to be operated without using a heat sink (see “No Fin Output Current Derating” chart in the page 6).

* Slim package reduces mounting space.

* Typical efficiency of 88% at DC 5V input, 2.5A out