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RP105 Series

Low Voltage 400mA LDO Regulator with dual input pin

  • Consumer
  • RoHS

The RP105 Series are CMOS-based LDO regulators featuring 400mA output with dual input pin. The input voltage can correspond from 0.9V by the inputting voltage into VBIAS. The UVLO function will lock out the internal circuit, if the input voltage is less than the UVLO voltage. Due to a built-in Nch. transistor with low on-resistance of 0.4Ω (at VSET=0.8V), RP105 provides a low dropout voltage.

RP105 also has an excellent line transient response. In addition to SOT-23-5 package, 1.2mm square DFN(PLP)1212-6 package and DFN1212-5 package are also available.

Specs & Datasheets

Input Voltage Range VBIAS
2.4 V to 5.25 V (6.0 V), VSET+1.6 V to 5.25 V (VSET ≥ 0.8 V)

Ver. B,D: 0.9 V to VBIAS (VSET < 0.8 V), VSET + 0.1 V to VBIAS (VSET ≥ 0.8 V)
Ver. E, F: 0.9 V to VBIAS
Operating Temperature Range -40°C to 85°C (125°C)
Supply Current Typ. 28 µA
Standby Current Typ. 0.1 µA
Output Voltage Range 0.6 V to 1.5 V (0.1 V step)
Output Voltage Accuracy ±1.0% (Ta = 25°C)
Output Voltage Temperature Coefficient Typ. ±50 ppm/°C
Dropout Voltage DFN1212-5: Typ. 105 mV
(IOUT = 400 mA, VSET = 1.5 V, VBIAS = 3.6 V)
Line Regulation Typ. 0.02%/V
Ripple Rejection Typ. 80 dB (f = 1 kHz, VIN Ripple)
Typ. 50 dB (f = 1 kHz, VBIAS Ripple)
Package DFN1212-5, DFN(PLP)1212-6, SOT-23-5

Download Datasheet

Protections / Functions

Functional Description

TSD Reverse Current Limit ISC Inrush Constant Slope ECO mode Auto Discharge External Driver

Technical Documents

SPICE model download

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Typical Application

Typical Application

RP105x151x Dropout Voltage vs. Output Current

RP105x151x Dropout Voltage vs. Output Current

Quality & Packages

Product Name Compatibility Package Marking Reliability
  • gradeConsumerC
DFN(PLP)1212-6 RP105K RP105K
  • gradeConsumerC
DFN1212-5 RP105L RP105L
  • gradeConsumerC
SOT-23-5 RP105N RP105N-FE

Refer to the datasheets for the details on the product.
The package file includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.
Please contact us or our distributors for unpublished reliability information.

Sample / Buy

Functional Description

TSD Thermal Shutdown Function
Reverse Current Protection Reverse Current Protection
Current Limit Overcurrent Protection
ISC Short Current Protection
Inrush Current Limit Inrush Current Protection
Constant Slope Constant Slope Function
ECO mode ECO Function
Auto Discharge Auto Discharge Function
External Driver External Output Driver Transistor

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