The RP200x Series consist of CMOS-based voltage regulator ICs with high output voltage accuracy and low supply current. These ICs perform with the chip enable function and realize a standby mode with ultra low supply current. To prevent the destruction by over current, the current limit circuit is included. The RP200x Series have 3-mode. One is standby mode with CE or standby control pin. Other two modes are realized with FMODE pin™. Fast Transient Mode (FT mode) and Fast mode and Low Power auto-change Mode (Auto ECO mode) are alternative with Auto-Eco pin (AE pin). Consumption current of IC itself at light load is automatically reduced at Auto ECO Mode compared with Fast Transient Mode. The output voltage is maintained between FT mode and Auto ECO mode.

Without FMODE pin type is also available. It is an LDO regulator with Auto ECO mode. (RP200Z in WLCSP.)

Since the packages for these ICs are SOT23-5, SC-88A, thin DFN(PLP)1212-6, and WLCSP-4-P5 packages, high density mounting of the ICs on boards is possible. RP200Q(SC-88A), RP200K (DFN(PLP)1212-6) and RP200N (SOT23-5) has Auto ECO pin (AE pin), then if the AE pin is "H", fast mode is available. If the AE pin is set at "L" level, auto ECO mode operation is available.