R1122N Series


Data Sheet / Flyer
Data Sheet * Flyer

We recommend succeeding products
"RP112x", "RP130x". ⇒Comparison List

The R1122N Series are CMOS-based voltage regulator ICs with high output voltage accuracy, extremely low supply current, low ON-resistance, and high Ripple Rejection. Each of these voltage regulator ICs consists of a voltage reference unit, an error amplifier, resistors, a current limit circuit, and a chip enable circuit. These ICs perform with low dropout voltage and a chip enable function.

The line transient response and load transient response of the R1122N Series are excellent, thus these ICs are very suitable for the power supply for hand-held communication equipment.

The output voltage of these ICs is fixed with high accuracy. Since the package for these ICs is SOT-23-5 (Mini-mold) package , high density mounting of the ICs on boards is possible.

Supply Current Typ. 100µA
Standby Mode Current Typ. 0.1µA
Dropout Voltage Typ. 0.19V (IOUT=100mA 3.0V Output type)
Ripple Rejection Typ. 80dB(f=1kHz)
Temperature-Drift Coefficient of Output Voltage Typ. ±100ppm/°C
Line Regulation Typ. 0.05%/V
Output Voltage Accuracy ±2.0%
Output Voltage Range 1.5V to 5.0V (0.1V steps)
(For other voltages, please refer to MARK INFORMATIONS.)
Package SOT-23-5(Mini-mold)
Built-in chip enable circuit ( 2 types; A: active “Low”, B: active “High”)
Built-in fold-back protection circuit Short Current Typ. 30mA
Pinout Similar to the TK112, TK111 l
Ceramic Capacitors Recommended to be used with this IC
  • Power source for cellular phones such as GSM, CDMA, PCS and so forth.
  • Power source for domestic appliances such as cameras, VCRs and camcorders.
  • Power source for battery-powered equipment.
Data Sheet Flyer Package Info. Mark Info. Quality Assurance Data
R1122N Series R1112N/
R1122N Series
SOT-23-5 R1122N Reliability

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

  • Buy Products / Order Sample


Ricoh semiconductor products are available at those dealers.


Page Top