The RP503x series is a low supply current CMOS-based PWM/VFM step-down DC/DC converters with synchronous rectifier. RP503x is PWM/VFM auto switching control in which mode automatically switches to high-efficiency VFM mode in low output current. The efficiency in low output current (VFM mode) improved compared with existing products. RP503x 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 RP503x Series are low supply current CMOS-based PWM/VFM step-down DC/DC converters featuring a synchronous rectifier. The series automatically switches to high-efficiency VFM mode when the output current is low, improving efficiency compared to existing products. Key features include a soft start circuit, an under-voltage lockout circuit (UVLO), and a latch protection circuit.
| Supply Current (Ipp2) | Typ. 202uA |
|---|---|
| Standby Current (Istandby) | Max. 5nA |
| Input Voltage Range (Vin) | -5V to 5.5V |
| Output Voltage Range (Vou) | 0.8V to 2.5V |
| Output Current (lout) | 600mA |
| Oscillator Frequency (fos) | 2MHz |
| Output Voltage Accuracy | +1.5% |
The output voltage range is internally fixed between 0.8V and 2.5V.
Yes, it includes a soft start circuit, an under-voltage lockout circuit (UVLO), and a latch protection circuit.