
Low Voltage 150mA LDO REGULATOR
R1182x SERIES Preliminary
1
OUTLINE
The R1182x Series are CMOS-based positive voltage regulator ICs with high output voltage accuracy and low
supply current. Each of these ICs consists of a voltage reference unit, an error amplifier, resistor-net for voltage
setting, a current limit circuit which prevents the destruction by excess current, and so on.
The output voltage of these ICs is fixed with high accuracy. The R1182 Series has low dropout voltage caused
by built in low on resistance transistor. Further, the consumption current of IC itself is Typ. 3.0µA at no load, at
the same time, compared with the conventional low supply current regulator, transient response is improved.
Since the packages for these ICs are SOT-23-5 (R1182N Series) and ultra small PLP1616-6 (R1182K Series),
high density mounting of the ICs on boards is possible.
FEATURES
• Low Supply Current.......................................... Typ. 3µA(Except the current through CE pull-down circuit)
• Standby Mode .................................................. Typ. 0.1µA
• Low Dropout Voltage ........................................ Typ. 0.22V (IOUT=150mA 3.0V Output type)
• Input Voltage Range ...........................................1.5V to 6.0V
• High Output Voltage Accuracy.......................... ±1.0% (VOUT≥ 1.5V)
• Small Packages .............................................. SOT-23-5 (R1182N) /PLP1616-6(R1182K)
• Output Voltage.................................................. Stepwise setting with a step of 0.1V in the range of 1.2V to
4.0V is possible
• 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
• Ripple Rejection ...................................................Typ. 55dB at 1kHz (VOUT=1.5V, IOUT=30mA)
..............................................................................Typ. 40dB at 10kHz (VOUT=1.5V, IOUT=30mA)
APPLICATIONS
• Stable voltage reference.
• Power source for electrical appliances such as cameras, camcorders, mobile communication equipment.
• Power source for battery-powered equipment.