Контроллеры для AC-DC UC2525BDW

ШИМ контроллер , 35В-8В питание, 450кГц, 18В/100мА выход, SOIC-16

The UC2525BDW is a Pulse Width Modulator (PWM ) designed to offer improved performance and lowered external parts count when used in designing all types of switching power supplies. The on-chip 5.1V reference is trimmed to 1% and the input common-mode range of the error amplifier includes the reference voltage, eliminating external resistors. A single resistor between the CT and the discharge terminals provides a wide range of dead-time adjustment. These devices also feature built-in soft-start circuitry with only an external timing capacitor required. A shutdown terminal controls both the soft-start circuitry and the output stages, providing instantaneous turn off through the PWM latch with pulsed shutdown, as well as soft-start recycle with longer shutdown commands.

• Separate oscillator sync terminal
• Adjustable deadtime control
• Internal soft-start
• Pulse-by-pulse shutdown
• Input under-voltage lockout with hysteresis
• Latching PWM to prevent multiple pulses
• Dual source/sink output drivers
• Green product and no Sb/Br