R1163N Series

3-Mode 150mA LDO Regulator with the Reverse Current Protection for Automotive Applications


Data Sheet

Data Sheet

The R1163x is a voltage regulator IC with high output voltage accuracy and low supply current that is developed with CMOS process technology. This IC performs with the chip enable function and realizes a standby mode with ultra low supply current. To prevent the destruction by over current, the current limit circuit is included. The R1163x has three modes. One is standby mode with CE or standby control pin. Other two modes are realized with ECO pin. Fast Transient Mode (FT mode) and Low Power Mode (LP mode) are alternative with ECO pin. Consumption current is reduced at Low Power Mode compared with Fast Transient Mode. The output voltage is maintained between FT mode and LP mode.
Further, the reverse current protection circuit is built-in. Therefore, if a higher voltage than VDD pin is forced to the output pin, the reverse current to VDD pin is very small (Max. 0.1 μA) , so it is suitable for backup circuit.
The R1163x is offered in a 5-pin SOT-23-5 package which can achieve the smallest possible footprint solution on boards where area is limited.


Input Voltage Range (Maximum Rating) 2.0V to 6.0V (6.5V)
Supply Current Typ. 6.0µA (Low Power Mode),
Typ. 70µA (Fast Transient Mode)
Reverse Current Max. 0.1µA
Standby Mode Typ. 0.6µA
Ripple Rejection Typ. 70dB (f=1kHz, Fast Transient Mode)
Output Voltage Range 1.5V to 5.0V (0.1V steps)
(For other voltages, please refer to the data sheet)
Output Voltage Accuracy ±1.5% (±2.5% at Low Power Mode)
Temperature-Drift Coefficient of Output Voltage Typ. ±100ppm/°C
Dropout Voltage Typ. 0.25V (IOUT=150mA, VOUT=2.8V)
Line Regulation Typ. 0.02%/V (Fast Transient Mode)
Output Noise "H" (FT Mode)
Output Noise "L" (LP Mode)
TYP. 30µVrms (BW=10Hz to 100kHz)
TYP. 40µVrms (BW=10Hz to 100kHz)
Package SOT-23-5
Built-in fold-back protection circuit Typ. 40mA (Current at short mode)
Performs with Ceramic Capacitors CIN=Ceramic 1.0µF, COUT=Ceramic 0.47µF


  • Power source for accessories such as car audios, car navigation systems, and ETC systems

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Data Sheet Package Quality Assurance Data Suffix Composition & Content*1
R1163N Series SOT-23-5 Reliability -AE Sn (Sn: 100%)
  • *1The composition of the product cannot be specified.

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