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R1122N_17 Datasheet, PDF (1/21 Pages) RICOH electronics devices division – LOW NOISE 150mA LDO REGULATOR | |||
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R1122N SERIES
LOW NOISE 150mA LDO REGULATOR
NO.EA-060-111027
OUTLINE
The R1122N Series are CMOS-based voltage regulator ICs with high output voltage accuracy, extremely 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, a current limit circuit, and a chip enable circuit. These ICs
perform with low dropout voltage and a chip enable function.
The line transient response and load transient response of the R1122N Series are excellent, thus these ICs
are very suitable for the power supply for hand-held communication equipment.
The output voltage of these ICs is fixed with high accuracy. Since the package for these ICs is SOT-23-5
(Mini-mold) package , high density mounting of the ICs on boards is possible.
FEATURES
⢠Supply Current ................................................................ Typ. 100μA
⢠Standby Mode Current .................................................. Typ. 0.1μA
⢠Dropout Voltage .............................................................. Typ. 0.19V (IOUT=100mA 3.0V Output type)
⢠Ripple Rejection.............................................................. Typ. 80dB(f=1kHz)
⢠Temperature-Drift Coefficient of Output Voltage ............. Typ. ±100ppm/°C
⢠Line Regulation ............................................................... Typ. 0.05%/V
⢠Output Voltage Accuracy................................................. ±2.0%
⢠Output Voltage Range..................................................... 1.5V to 5.0V (0.1V steps)
(For other voltages, please refer to MARK INFORMATIONS.)
⢠Package ........................................................................ SOT-23-5 (Mini-mold)
⢠Built-in chip enable circuit ( 2 types; A: active âLowâ, B: active âHighâ)
⢠Built-in fold-back protection circuit .................................. Short Current Typ.30mA
⢠Pin-out............................................................................. Similar to the TK112,TK111
⢠Ceramic Capacitors Recommended to be used with this IC
APPLICATIONS
⢠Power source for cellular phones such as GSM, CDMA, PCS and so forth.
⢠Power source for domestic appliances such as cameras, VCRs and camcorders.
⢠Power source for battery-powered equipment.
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