STR-A6159M

Off-Line PRC Controllers with Integrated Power MOSFET STR-A6100 Series General Descriptions The STR-A6100 series are power ICs for switching power supplies, incorporating a MOSFET and a current mode PRC controller IC. PRC (Pulse Ratio Control) controls on-time with fixed off-time. The IC includes a startup circuit and a standby function to achieve the low standby power. The rich set of protection features helps to realize low component counts, and high performance-to-cost power supply. Package DIP8 Not to Scale S/OCP 1 VCC 2 GND FB/OLP 4 8D 7D 6 5 ST Features  Current Mode Type Pulse Ratio Control  Auto Standby Function Normal Operation ------------------------------ PRC Mode Standby ---------------------------- Burst Oscillation Mode  No Load Power Consumption < 40mW  Leading Edge Blanking Function  Auto Bias Function  Protections Overcurrent Protection (OCP); pulse-by-pulse Overload Protection (OLP); auto-restart Overvoltage Protection (OVP); latched shutdown Thermal Shutdown Protection (TSD); latched shutdown Typical Application Circuit VAC BR1 C1 T1 D51 C5 DST R1 P D1 C51 S 87 5 D D NC ST C6 U1 STR-A6100 S/OCP VCC GND FB/OLP 1234 D2 R2 C2 D L51 R54 PC1 R51 R55 R52 C52 R53 U2 R56 ROCP DZ1 C4 C3 PC1 CY VOUT (+) C53 (-) Lineup  Electrical Characteristics Products STR-A61×× Fixed off-time 8 μs STR-A61××M 11.5 μs STR-A61××E 11.5 μs * ST pin does not need Diode. Auto bias function Yes − − Startup resistance − − Yes*  Power MOSFET Elect...