Nisshinbo Micro Devices Inc. RP110K121D-TR

The RP110x Series is a voltage regulator (LDO) IC, which has been developed using the CMOS process technology, with high output voltage accuracy, ultra-low supply current, and low ON-resistance transistor. The IC contains the following components: a voltage reference unit, an error amplifier, a resistor-net for output voltage setting, a current limit circuit for preventing short-circuit, a soft-start circuit, and a chip enable circuit. By minimizing the supply current to 1μA, the IC is able to prolong the battery life of each system. The external capacitor is 0.1μF with phase compensation. The IC also has a constant slope circuit as a soft-start circuit, which does not require any external capacitor. It minimizes the inrush current and prevents the output voltage overshoot at the start-up. In addition to the small packaged SOT-23-5 and SC-88A, the RP110x Series offers the ultra-small DFN(PL)0808-4 package and DFN1010-4, which enables the high density mounting of LDO regulator.

• Supply Current .. . Typ. 1.0μA (Except the current through CE pull down circuit)
• Standby Current . Typ. 0.1μA
• Dropout Voltage ....... .. Typ. 0.28V (IOUT = 150mA, VOUT=2.8V)
• Output Voltage Accuracy .... .. ±1.0%
• Temperature-Drift Coefficient of Output Voltage ... Typ. ±100ppm/°C
• Line Regulation .......... .. Typ. 0.02%/V
• Packages .. . DFN(PL)0808-4, DFN1010-4, SC-88A, SOT-23-5
• Input Voltage Range ........... ... 1.4V to 5.25V
• Output Voltage Range ...... ... 0.8V to 3.6V (0.1V steps) (For other voltages, please refer to MARK INFORMATIONS.)
• Built-in Fold Back Protection Circuit ..... .. Typ. 50mA (Current at short mode)
• Ceramic capacitors are recommended to be used with this IC ..... 0.1μF or more
• Built-in Constant Slope Circuit

• Power source for portable communication equipment.
• Power source for electrical appliances such as cameras, VCRs and camcorders.
• Power source for battery-powered equipment.