OUTLINE
The RP154x Series are CMOS-based voltage regulator ICs that provide high ripple rejection, low dropout
voltage, high output voltage accuracy, and low supply current. The RP154x Series consist of a voltage reference
unit, an error amplifier, resistors for setting output voltage, a short current limit circuit, and a chip enable circuit.
The RP154x Series are available in fixed output voltage options. Besides the low supply current by CMOS, the
RP154x Series present a low dropout voltage by built-in low ON resistance Tr. and an extended battery life by a
chip enable function. Compared with the existing CMOS-based regulator ICs, the RP154x Series are further
improved in ripple rejection, line transient response, and load transient response. All these features allow the
RP154x Series to become ideal power sources for hand-held communication equipments.
The RP154x Series are available in two types of packages: SOT-23-6 and DFN1216-8 package with 2 LDOs
on board that achieves high-density mounting.

FEATURES
 Supply Current ..................................................................... Typ. 50A2 (VR1&VR2)
 Standby Current ................................................................... Typ. 0.1A2 (VR1&VR2)
 Input Voltage Range ............................................................ 1.4V to 5.25V
 Output Voltage Range .......................................................... 0.8V to 3.7V (0.1V steps)
(For details, please refer to MARK SPECIFICATION TABLE)
 Output Voltage Accuracy ...................................................... 1.0% (VSET>2.0V, Topt25C)
 Temperature-Drift Coefficient of Output Voltage .................. Typ. 80ppm/C
 Dropout Voltage ................................................................... Typ. 0.25V (IOUT300mA, VSET2.5V)
 Ripple Rejection ................................................................... Typ. 75dB (f1kHz)
 Line Regulation .................................................................... Typ. 0.02%/V
 Packages ............................................................................ DFN1216-8, SOT-23-6
 Built-in Fold Back Protection Circuit .................................... Typ. 60mA (Current at short mode)
 Ceramic capacitors are recommended to be used with this IC ... 1.0F or more

APPLICATIONS
 Power source for portable communication equipment.
 Power source for electrical appliances such as cameras, VCRs and camcorders.
 Power source for battery-powered equipment.