R1141Q_17 Datasheet, PDF (1/16 Pages) RICOH electronics devices division – 120mA LDO REGULATOR

R1141Q SERIES
120mA LDO REGULATOR
NO.EA-082-111027
OUTLINE
The R1141Q Series consist of CMOS-based voltage regulator ICs with high output voltage accuracy, low
supply current, low ON-resistance, and high ripple rejection. Each of these voltage regulator ICs consists of a
voltage reference unit, an error amplifier, resistors for setting Output Voltage, a current limit circuit, and a chip
enable circuit.
Output Current Limit circuit is embedded in the R1141Q Series to prevent the break down of the IC caused by
excess current.
Chip enable circuit realizes standby mode and makes consumption current extremely small.
These ICs perform with low dropout voltage and a chip enable function. The line transient response and load
transient response of the R1141Q Series are excellent, making these ICs very suitable for the power supply for
hand-held communication equipment.
Their output voltage is internally fixed with high accuracy. Since the package for these ICs is SC-82AB (Super
Mini-mold) package, high density mounting of the ICs on boards is possible.
FEATURES
• Supply Current ............................................................. Typ. 90μA
• Standby Mode .............................................................. Typ. 0.1μA
• Dropout Voltage ........................................................... Typ. 0.15V (IOUT=100mA, Output Voltage=3.0V Type)
• Ripple Rejection........................................................... Typ. 75dB (VOUT ^<= 2.4V)
Typ. 70dB (VOUT ^>= 2.5V) (f=1kHz)
• Temperature-Drift Coefficient of Output Voltage .......... Typ. ±100ppm/°C
• Line Regulation ............................................................ Typ. 0.02%/V
• Output Voltage Accuracy..............................................±1.5% or ±30mV (VOUT ^<= 2.0V)
• Excellent Dynamic Response
• Package .......................................................................SC-82AB (Super Mini-mold)
• Output Voltage Range.................................................. 1.5V to 4.0V (0.1V steps)
(For other voltages, please refer to MARK INFORMATIONS.)
• Built-in Chip Enable Circuit (B/D : active high)
• Built-in Fold-back Protection Circuit............................ Typ. 40mA (Short Current)
• Ceramic capacitor can be used for Output pin ........... Recommended value is 2.2µF or more.
APPLICATIONS
• Power source for cellular phones such as GSM, CDMA and various kinds of PCS.
• Power source for electrical appliances such as cameras, VCRs and camcorders,
and hand-held communication equipment.
• Power source for battery-powered equipment.
• Very stable Voltage Reference
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