RP105x Series

Low Voltage 400mA LDO Regulator

Data Sheet / Flyer
Data Sheet * Flyer

The RP105x Series are 400mA output type CMOS-based voltage regulator ICs with capability of low input voltage (Min. 0.9V) and low output voltage (Min. 0.6V). These ICs are remarkably improved the performance at low input voltage compared with conventional low voltage LDOs, and two power supply voltage type. (Another power source, VBIAS pin voltage must be Min. 2.4V). Each of these ICs consists of a voltage reference unit, an error amplifier, resistor-net for voltage setting, a current limit circuit to avoid the destruction, a UVLO circuit with monitoring input voltage, and so on.

The RP105x Series have the ultra low on resistance output driver, the on resistance is Typ. 0.4Ω (VOUT=0.8V, IOUT=300mA). The built-in driver is Nch MOSFET, thus the load transient response is excellent, (under the condition of the current between 1mA and 400mA, tr=0.5μs, the undershoot level is approximately 50mV).

The output voltage of these ICs is fixed with high accuracy. Since the packages for these ICs are DFN(PLP)1212-6, SOT-23-5 and SC-88A therefore high density mounting of the ICs on boards is possible.

Supply Current Typ. 28µA
Supply Current (Standby Mode) Typ. 0.1µA
Ripple Rejection Typ. 80dB (f=1kHz, VIN Ripple)
Typ. 50dB (f=1kHz, VBIAS Ripple)
Output Voltage Range 0.6V to 1.5V (0.1V steps)
(For other voltages, please refer to MARK INFORMATIONS.)
Input Voltage Range (VBIAS) 2.4V to 5.25V (VOUT < 0.8V)
Set VOUT+1.6V to 5.25V (VOUT>=0.8V)
Input Voltage Range (VIN) 0.9V to VBIAS (VOUT < 0.8V)
Set VOUT+0.1V to VBIAS (VOUT>=0.8V)
Output Voltage Accuracy Typ. ±15mV (Topt=25°C)
Temperature-Drift Coefficient of Output Voltage Typ. ±50ppm/°C
Dropout Voltage Typ. 180mV (IOUT=400mA, VOUT=1.5V, VBIAS=3.6V)
Line Regulation Typ. 0.02%/V
Packages DFN(PLP)1212-6, SC-88A, SOT-23-5
Built-in Fold Back Protection Circuit Typ. 120mA (Current at short mode)
Ceramic capacitors are recommended CBIAS=CIN=1.0µF or more, COUT=2.2µF or more
  • Power source for battery-powered equipment.
  • Power source for electrical appliances such as cameras, VCRs and camcorders.
  • Power source for portable communication equipment.

Data Sheet Flyer Package Info. Mark Info. Quality Assurance Data
RP105x Series RP105x Series SOT-23-5 RP105N Reliability
RP105K Reliability

All PDF files are less than 1MB unless otherwise stated.

Note : Discontinued Products
SC-88A (RP105Q Series) are already discontinued. Providing only for the customer under present adoption with stock.

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