The RP500x Series is a low supply current CMOS-based PWM/VFM step-down DC/DC converter with synchronous rectifier. RP500x can be selected from two control types - fixed PWM control or PWM/VFM auto switching control in which mode automatically switches to high-efficiency VFM mode in low output current. RP500x includes a soft start circuit, an under-voltage lockout circuit (UVLO), and a latch protection circuit. By simply using an inductor and capacitors as external components, a high-efficiency step-down DC/DC converter can be easily configured.
The RP500x Series are low supply current CMOS-based PWM/VFM step-down DC/DC converters featuring a synchronous rectifier. The series offers two control types: fixed PWM control or PWM/VFM auto switching, which automatically switches to high-efficiency VFM mode at low output currents. Key features include a soft start circuit, under-voltage lockout (UVLO), and a latch protection circuit.
| Output Current | 600mA* |
|---|---|
| Supply Current (Ipp1) | Typ. 400pA |
| Input Voltage Range | 2.55V to 5.5V |
| Output Voltage Range | 1.1V to 3.3V |
| Oscillator Frequency | 1.2MHz |
The series can be selected from fixed PWM control or PWM/VFM auto switching control.
The maximum output current is approximately 600mA.