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. 100A Standby Mode Current ..................................................Typ. 0.1A 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 Low, B: active High) 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. 1 R1122N BLOCK DIAGRAM R1122Nxx1A R1122Nxx1B 3131 VDD VOUT VDD VOUT + + Vref Vref GND GND CE Current Limit CE Current Limit 2 2 4 4 SELECTION GUIDE The output voltage, the active type for the ICs can be selected at the user s request. Product Name Package Quantity per Reel Pb Free Halogen Free R1122Nxx1-TR-FE SOT-23-5 3,000 pcs Yes Yes xx : The output voltage can be designated in the range from 1.5V(15) to 5.0V(50) in 0.1V steps. (For other voltages, please refer to MARK INFORMATIONS.) : Designation of Active Type. (A) active (B) active 2