The RP109x Series Low Noise 150mA LDO Regulator is a CMOS-based voltage regulator IC with high output voltage accuracy, extremely low supply current, low ON-resistance, and high ripple rejection. Each of these ICs consists of a voltage reference unit, an error amplifier, a resistor-net for voltage setting, a current limit circuit and a chip enable circuit. These ICs perform with low dropout voltage and a chip enable function which prolong the battery life. The line transient response and load transient response of the RP109x Series are excellent, thus these ICs are very suitable for the power supply for hand-held communication equipment. RP109x Series contributes to the downsizing of the hand-held equipment because it can use the 0.1μF ceramic capacitor. In addition to SOT-23-5, SC-88A and DFN1010-4 packages, a 0.8mm square ultra compact DFN(PLP)0808-4 package is also available.
The Ricoh RP109x Series are CMOS-based voltage regulator ICs designed for high output voltage accuracy and extremely low supply current. These regulators feature low ON-resistance, high ripple rejection, and a chip enable function to prolong battery life. They are particularly suitable for power supplies in hand-held communication equipment due to their excellent transient response and ability to operate with small 0.1uF ceramic capacitors.
| Supply Current | Typ. 50uA |
|---|---|
| Dropout Voltage | 0.25V (lout=150mA, Vout=2.5V) |
| Ripple Rejection | 75dB (f=1kKHz, Vout=2.5V) |
| Temperature-Drift Coefficient | Typ. 30ppm/°C (Vout21.8V) |
| Output Voltage Accuracy | 1.0% |
| Input Voltage Range | 1.4V to 5.25V |
| Output Voltage Range | 0.8V to 3.6V (0.1V steps) |
| Short Current Limit | Typ. 40mA |
| Operating Temperature Range | -40 to 85 °C |
The series is available in DFN(PLP)0808-4, DFN1010-4, SC-88A, and SOT-23-5 packages.
Ceramic capacitors of 0.1uF or more are recommended for both input and output.
The absolute maximum input voltage rating is 6.0V.