RP131x Series Low Voltage 1A LDO is based on CMOS process and features 1A output with low on-resistance. CMOS process provides both large output current and low supply current. Dropout voltage is significantly lower than bipolar regulators. RP131x handles low voltage with an input voltage from 1.6V and an output voltage from 0.8V. Accordingly, the device supports highly integrated, low voltage-driven LSI as a rear stage of the DC/DC converter. CE pin can switch the regulator into standby mode. In addition to a fold-back protection circuit built into conventional LDO regulators, RP131x has a thermal shutdown circuit and inrush current limit circuit. Ceramic capacitors can be used.
The Ricoh RP131x Series are CMOS-based Low Dropout (LDO) regulators designed to provide a 1A output current with low on-resistance. These devices are suitable for highly integrated, low-voltage-driven LSI applications, supporting input voltages from 1.6V and output voltages from 0.8V. The series includes features such as a fold-back protection circuit, thermal shutdown, and an inrush current limit circuit.
| Supply Current (Iss) | Typ. 65pA (Vin=6.5V) |
|---|---|
| Standby Current (Istandby) | Typ. 0.15A (Same as above, CE="L") |
| Fold-back Protection Circuit | Current limit Typ. 250mA |
| Dropout Voltage (Voor) | Typ. 0.5V (lout=1A, Vout=2.8V) |
| Inrush Current Limit Circuit | Typ. 500mA |
| Ripple Rejection (RR) | Typ. 70dB (f=1kHz, Vout S 3.3V) |
| Thermal Shutdown Circuit | Stops at 165°C |
| Ceramic Capacitor Requirement (Vout ≤ 3.6V) | 2.2uF or more |
| Ceramic Capacitor Requirement (Vout > 3.6V) | 4.7uF or more |
Yes, ceramic capacitors can be used for the output.
The thermal shutdown circuit stops operation at 165°C.