R1131x Series

Low Voltage 300mA LDO REGULATOR

Data Sheet / Flyer
Data Sheet * Flyer

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The R1131x Series are CMOS-based low voltage regulator ICs with output voltage range from 0.8V to 3.3V. The minimum operating voltage is 1.4V. Each of these voltage regulator ICs consists of a voltage reference unit, an error amplifier, resistors for setting output voltage, a current limit circuit, and a chip enable circuit.

To prevent the destruction by over current, current limit circuit is included. Standby mode realizes ultra small consumption current.

The output voltage of these ICs is internally fixed with high accuracy. Since the packages for these ICs are SOT-23-5, SON-6, and HSON-6, high density mounting of the ICs on boards is possible.

Supply Current Typ. 80µA (VOUT < 1.8V)
Typ. 60µA (VOUT >=1.8V)
Standby Mode Typ. 0.1µA
Dropout Voltage Typ. 0.48V(IOUT=300mA Output Voltage=1.0V Type)
Typ. 0.31V(IOUT=300mA Output Voltage=1.5V Type)
Typ. 0.23V(IOUT=300mA Output Voltage=3.0V Type)
Ripple Rejection Typ. 65dB (f=1kHz)
Temperature-Drift Coefficient of Output Voltage Typ. ±100ppm/°C
Line Regulation Typ. 0.01%/V
Output Voltage Accuracy ±2.0%
Output Voltage Range 0.8V to 3.3V (0.1V steps)
(For other voltages, please refer to MARK INFORMATIONS.)
Input Voltage Range 1.4V to 6.0V
Packages SOT-23-5, SON-6, HSON-6
Built-in fold-back protection circuit Typ. 50mA (Current at short mode)
External Capacitors CIN=COUT=Tantalum 1.0µF (VOUT < 1.0V)
CIN=COUT=Ceramic 1.0µF (VOUT >=1.0V)

  • Precision Voltage References.
  • Power source for electrical appliances such as cameras, VCRs and hand-held communication equipment.
  • Power source for battery-powered equipment.
Data Sheet Flyer Package Info. Mark Info. Quality Assurance Data
R1131x Series R1131x Series SOT-23-5 R1131N Reliability
SON-6 R1131Dxx1 Reliability

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

Note : Discontinued Products
HSON-6 (R1131Dxx2 Series) are already discontinued. Providing only for the customer under present adoption with stock.

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