STRF6628 - Allegro Microsystems

STRF6628 Off-Line Quasi-Resonant Flayback Switching Regulators

and Operation The voltage on the VIN terminal (pin 4) controls startup and shutdown of the Series STR-F6600 devices. Figure 1 shows a typical start up circuit. The VIN terminal voltage during startup is shown in figure 2. At startup, C2 is charged through the startup resistor RS. When the VIN terminal voltage reaches 16 V (typ.), the control circuit enables .

Features

The series is provided in a five-pin overmolded TO-3P style package, affording dielectric isolation without compromising thermal characteristics. 2 3 VIN 1 OVER-CURRENT & FEEDBACK 4 Dwg. PK-011-1 ABSOLUTE MAXIMUM RATINGS at TA = +25°C Control Supply Voltage, VIN . . . . . . . . 35 V Drain-Source Voltage, VDS Series STR-F6620 . . . . . . . . . . . . 450 V Series STR-F6630 . . . . . . . . . . . . 500 V Series STR-F6650 . . . . . . . . . . . . 650 V Series STR-F6670 . . . . . . . . . . . . 900 V Drain Switching Current, ID . . . See Table Peak Drain Current, IDM . . . . . . See Table Ava.