R1118K Series


Data Sheet / Flyer
Data Sheet * Flyer

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R1118x Series are CMOS-based voltage regulator ICs with ultra low supply current (Typ.5.5μA), and remarkable improved transient response compared with the conventional low supply current voltage regulator. The supply current of these ICs is automatically shifts between fast mode and low power mode, it depending on the load current. The current threshould is fixed internally. R1118x shifts from low power mode to fast response mode at IOUT=7mA (Typ.) and shifts fast response mode to low power mode at IOUT=2mA (Typ.).

These ICs are capable of the low input voltage (Min.1.4V) and the output voltage range from 0.8V is possible. The output voltage of R1118x is fixed in the IC.

Each of these ICs consists of a voltage reference unit, an error amplifier, a resister net for setting output voltage, a current limit circuits for over-current.

A standby mode with ultra low supply current can be realized with the chip enable function.

Since the packages for these ICs are SOT-23-5 (Non-promotion) and DFN(PLP)1612-4B, therefore high density mounting of the ICs on boards is possible.

Note : Discontinued Products
SOT-23-5 (R1118N Series) will be discontinued at the end of January, 2014.
Supply Current (Low power Mode) Typ. 5.5µA (IOUT=0mA)
Supply Current (Fast Mode) Typ. 50µA (IOUT=11mA)
Supply Current (Standby Mode) Typ. 0.1µA
Ripple Rejection Typ. 70dB (f=1kHz)
Typ. 60dB (f=10kHz)
Input Voltage Range 1.4V to 6.0V
Output Voltage Range 0.8V to 4.2V (0.1V steps)
(For other voltages, please refer to MARK INFORMATIONS.)
Output Voltage Accuracy ±1.0% (1.5V < VOUT <= 3.5V, Topt=25°C)
Temperature-Drift Coefficient of Output Voltage Typ. ±100ppm/°C
Dropout Voltage Typ. 0.27V (IOUT=150mA, VOUT=2.8V)
Line Regulation Typ. 0.02%/V
Packages DFN(PLP)1612-4B, SOT-23-5 (Non-promotion)
Built-in Fold Back Protection Circuit Typ. 40mA
Ceramic capacitors are recommended to be used with this IC 1.0µF
  • Power source for portable communication equipment.
  • Power source for electrical appliances such as cameras, VCRs and camcorders.
  • Power source for battery-powered equipment.
Data Sheet Flyer Package Info. Mark Info. Quality Assurance Data
R1118K Series R1118K Series DFN(PLP)1612-4B R1118K Reliability

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