The RP400x series are CMOS-based automatic switch PWM- or VFM-controlled step-up DC/DC converters. RP400x includes a soft start circuit. By simply using an inductor, a capacitor, a diode, and (resistors) as external components, a high-efficiency step-up DC/DC converter can be easily configured. Due to current mode PWM control, the RP400x provides a fast response and high efficiency. Ceramic output capacitors can be used. The output voltage can be selected from the internally fixed or the externally adjustment. The RP400x has an anti-ringing switch that prevents inductor current from ringing in PWM discontinuous mode. RP400x switches automatically to VFM control in low output current, keeping high efficiency. In addition to SOT-23-5 package, a 1.8mm × 2.0mm square DFN(PLP)1820-6 package is also available.
The RP400x Series are CMOS-based automatic switch PWM- or VFM-controlled step-up DC/DC converters. They include a soft start circuit and allow for high-efficiency configuration using an inductor, capacitor, diode, and resistors. The series supports ceramic output capacitors and offers both internally fixed and externally adjustable output voltage options.
| Supply Current (Ipp1) | Typ. 300uA |
|---|---|
| Supply Current (Ipp2) | Typ. 160nA |
| Standby Current | Max. 3A |
| Coil-current Limit Circuit | Current Limit Typ. 600mA |
| Input Voltage Range (Vin) | Max. 5.5V |
| Soft Start Time | Typ. 0.7ms |
| Output Voltage Range (Vou) | 1.8V to 5.0 V |
| Packages | DFN(PLP)1820-6, SOT-23-5 |
The RP400x series uses current mode PWM or VFM-controlled step-up DC/DC conversion.
Yes, the RP400x allows for the use of ceramic output capacitors.