RP501K series are CMOS-based step-down DC/DC converters with synchronous rectifier.
The RP501K Series are CMOS-based step-down DC/DC Converters featuring a built-in synchronous rectifier. These ICs integrate an oscillator, switching control circuit, reference voltage unit, error amplifier, soft-start circuit, and various protection circuits to enable easy composition of low ripple, high efficiency converters using only external inductors and capacitors.
Key features include a wide input voltage range from 2.5V to 5.5V and an output voltage adjustable from 1.0V to 3.3V with high accuracy (±1.5% or ±24mV). The series supports automatic PWM/VFM mode change or fixed PWM control via the MODE pin, includes a built-in peak current limit of typically 1.5A, and utilizes a DFN(PLP)25x27-10 package for high-density mounting.
| Input Voltage Range | 2.5V to 5.5V |
|---|---|
| Output Voltage Range | 1.0V to 3.3V |
| High Accuracy Output Voltage | ±1.5% (Vout≥1.6V) |
| Oscillator Frequency | Typ. 2.25MHz |
| Built-in Peak Current Limit | Typ. 1.5A |
| Package Type | DFN(PLP)25x27-10 |
| Operating Temperature Range | -40 to 85 °C |
The device operates with an input voltage between 2.5V and 5.5V.