RP111x Series

Good Transient Response Low Voltage 500mA LDO

Data Sheet / Flyer
Data Sheet * Flyer

The RP111x Series are CMOS-based LDO regulators featuring 500mA output current. The input voltage is as low as 1.4V and the output voltage can be set from 0.7V. Due to a built-in 0.46Ω (at VOUT=2.8V) on-resistor, RP111x can provide a low dropout voltage. RP111x also features an excellent line transient response, ripple rejection at 75dB, and low noise. The output voltage accuracy is as high as ±0.8% and the temperature drift coefficient of output voltage is low at ±30ppm/°C. The accuracy of the output voltage of RP111x includes the temperature characteristics and the load transient response has been improved. The typ. and max value of under/overshoot for various output current are shown in the typical characteristics in the datasheet, therefore the accuracy of the output voltage estimation will be easy on the actual operating cases.

In addition to a fold-back protection circuit built into conventional regulators, RP111x contains a thermal shutdown circuit and an inrush current limit circuit. SOT-23-5 and SOT-89-5 packages, a 1.2mm square DFN1212-6 package are available.

Supply Current Typ. 80µA
Standby Current Typ. 0.1µA
Dropout Voltage Typ. 0.23V (IOUT=500mA, VOUT=2.5V)
Ripple Rejection Typ. 75dB (f=1kHz)
Typ. 70dB (f=10kHz)
Output Voltage Accuracy ±0.8% (VOUT ≥1.8V)
Output Voltage Temperature Coefficient Typ. ±30ppm/°C (VOUT ≥1.8V)
Line Regulation Typ. 0.02%/V
Packages DFN1212-6, SOT-23-5, SOT-89-5
Input Voltage Range 1.4V to 5.25V
Output Voltage Range 0.7V to 3.6V (0.1V steps)
(For other voltages, please refer to MARK INFORMATIONS.)
Built-in Foldback Protection Circuit Typ. 50mA (Current at short mode)
Thermal Shutdown Temperature 165°C
Inrush Current Limit Typ.400mA (for 180µs after start-up)
Ceramic capacitors are recommended to be used with this IC 1.0µF or more

  • Power source for portable communication equipment.
  • Power source for electrical appliances such as cameras, VCRs and camcorders.
  • Power source for battery-powered equipments.
  • Power source for electrical home appliances.
Data Sheet Flyer Package Info. Mark Info. Quality Assurance Data
RP111x Series RP111x Series DFN1212-6 RP111L Reliability
SOT-23-5 RP111N Reliability
SOT-89-5 RP111H Reliability

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