OUTLINE 

The RP115x is a positive voltage regulator featuring 500 mA/ 1.0 A that provide high ripple rejection, low dropout voltage, high output voltage accuracy, and low supply current. Internally, the RP115x consists of a voltage reference unit, an error amplifier, a resistor-net for output voltage setting, a current limit circuit, a thermal shutdown circuit, and a reverse current protection circuit. The RP115x uses CMOS process for achieving low supply current, low On Resistance for low dropout voltage (Typ. 0.195 V (DFN2020-8B, IOUT = 1.0 A, VSET = 1.2 V)) and CE function for long battery life. The RP115x is available in the DFN2020-8B package for space saving and the SOT-89-5 (Output current: 1.0 A fixed) package for higher power applications. The RP115L (DFN2020-8B package) can choose the output current limit between 1.0 A or 500 mA by alternating the LCON pin between “High” or “Low”. The RP115H (SOT-89-5 package) can output only 1.0 A since it does not include the LCON pin. 

FEATURES 

• Input Voltage Range (Maximum Rating) ······1.4 V to 5.25 V (6.0 V) 

• Operating Temperature····························−40°C to 105°C 

 • Supply Current······································· Typ. 110 μA 

 • Standby Current····································· Typ. 0.5 μA 

 • Dropout Voltage ····································· Typ. 0.195 V (RP115L: IOUT = 1.0 A, VSET = 1.2 V) 

                                                                      Typ. 0.235 V (RP115H: IOUT = 1.0 A, VSET = 1.2 V) 

• Ripple Rejection·····································Typ. 80 dB (f = 1 kHz, VSET ≤ 1.8 V) 

                                                                   Typ. 75 dB (f = 1 kHz, VSET > 1.8 V) 

• Output Voltage Accuracy··························±1.0% (VSET ≥ 1.75 V) 

• Output Voltage Temperature Coefficient ······Typ. ±30 ppm/°C (VSET ≥ 1.75 V) 

                                                                  Typ. ±100 ppm/°C (VSET < 1.75 V)

• Line Regulation······································Typ. 0.02%/V 

• Settable Output Voltage ···························0.9 V/ 1.0 V/ 1.1 V/ 1.2 V/ 1.25 V/ 1.35 V/ 1.5 V/ 1.75V/ 1.8 V 2.5 V/ 2.8 V 3.0 V/ 3.3 V / 3.4 V / 3.9 V 

• Built-in Short Current Limit Circuit ··············Typ. 60 mA (RP115L: LCON = "Low") 

• Built-in Peak Current Limit 

• Built-in Thermal Shutdown Circuit ··············Thermal Shutdown Temperature: 165°C 

 • Built-in Constant Slope Circuit for Start-up 

• Built-in Inrush Current Suppression Circuit···Typ. 300 mA (RP115L: LCON = "Low") 

• Reverse Current Protection 

• Recommended Ceramic Capacitors ···········1.0 µF or more 

• Output Noise ········································· 17 x VSET µVrms (BW = 10 Hz to 100 kHz, VSET < 1.75 V) 

 • Package···············································DFN2020-8B, SOT-89-5

APPLICATIONS 

  Power supply for electronic control units such as EV inverter and battery charge control unit.

RP115xx Datasheet Download