The RP506K Series are low supply current CMOS-based PWM/VFM step-down DC/ DC converters with synchronous rectifier featuring 2A*1 output current. Internally, a single IC consists of an oscillator, a reference voltage unit, an error amplifier, a switching control circuit, a mode control circuit, a soft start circuit, a latch protection circuit, an under-voltage lockout (UVLO) circuit, a thermal shutdown circuit, and switching transistors. By simply using an inductor and capacitors as external components, without connecting any diode, a low ripple and high efficiency synchronous rectifier step-down DC/ DC converter can be easily configured. RP506K is available in DFN(PLP)2527-10 package which achieves high-density mounting on boards. RP506K is available in the fixed output voltage type (RP506Kxx1A/ B/ D/ E) which can be set by 0.1 V step and the output voltage accuracy is as high as ±1.5% or ±18mV, or the adjustable output voltage type (RP506K001C/ F) which can be set by using the external resistors. The oscillator frequency can be selected from 2.25MHz (RP506Kxx1A/ B/ C) or 1.2MHz (RP506K001C/ F). By inputting a signal to MODE pin, RP506K can choose PWM/VFM auto switching control or forced PWM control. In low output current, PWM/VFM auto switching control automatically switches from PWM mode to VFM mode in order to achieve high efficiency.
The Ricoh RP506K Series consists of low supply current CMOS-based PVWM/VFM step-down DC/DC converters with a synchronous rectifier. These devices feature a 2A output current and are designed to be configured simply by using an inductor and capacitors without connecting any diodes. The series is available in a DFN(PLP)2527-10 package for high-density mounting.
| Output Current | 2A |
|---|---|
| Supply Current (Typ) | 48uA |
| Input Voltage Range | 2.5V to 5.5V |
| Package | DFN(PLP)2527-10 |
| Operating Temperature Range | -40 to +85 °C |
The output voltage accuracy is as high as +1.5% or +18mv.
Yes, it can be configured by simply using an inductor and capacitors without connecting any diode.
The latch protection circuit latches the built-in driver to the OFF state for a specified time.