R1182K121B Datasheet, PDF (1/23 Pages) RICOH electronics devices division – Low Voltage 150mA LDO REGULATOR

R1182x SERIES
Low Voltage 150mA LDO REGULATOR
NO.EA-133-070621
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 in all the load range by our original seamless technology.
Since the packages for these ICs are SOT-23-5 and ultra small PLP1616-6, 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 Current ................................................Typ. 0.1µA
• Input Voltage Range ........................................ 1.5V to 6.0V
• Output Voltage ..................................................1.2V to 4.0V
• Low Dropout Voltage.........................................Typ. 0.23V (IOUT=150mA 3.0V Output type)
• Ripple Rejection................................................Typ. 55dB at 1kHz (VOUT=1.5V, IOUT=30mA)
Typ. 40dB at 10kHz (VOUT=1.5V, IOUT=30mA)
• High Output Voltage Accuracy ..........................±1.0% (VOUT ^>= 1.5V), ±15mV (VOUT<1.5V)
• Low Temperature-Drift Coefficient of Output Voltage........... Typ. ±100ppm/°C
• Excellent Line Regulation .................................Typ. 0.1%/V
• Small Packages ..............................................SOT-23-5,PLP1616-6
• 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)
APPLICATIONS
• Stable voltage reference.
• Power source for electrical appliances such as cameras, camcorders, mobile communication equipment.
• Power source for battery-powered equipment.
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