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R5324D004A

CMOS 3ch-LDOs for RF Unit

RICOH Co.,Ltd. 

R5324D SERIES

CMOS 3ch-LDOs for RF Unit

NO. EA-099-0606

OUTLINE

The R5324D Series are CMOS-based multi positive voltage regulator ICs with high output voltage accuracy,

low supply current, low noise, low dropout and high ripple rejection. The R5324D Series contain three voltage

regulators. Each of these voltage regulators in the R5324D Series consists of a voltage reference unit, an error

amplifier, resistors for setting output voltage, a short current limit circuit, a chip enable circuit, and so on.

The chip enable function contributes to prolong battery life. Further, regulators in the R5324D Series are with

low dropout voltage, excellent load transient response and line transient response, thus the R5324D series are

very suitable for the power supply for hand-held communication equipment.

Since the package for these ICs is SON-8, high density mounting of the ICs on boards is possible.

FEATURES

• Low Supply Current .......................................................... Typ. 90µA (VR1, VR2, VR3)

• Low Standby Current ........................................................ Typ. 0.1µA

• Low Dropout Voltage......................................................... Typ. 0.23V (VR1) (IOUT=200mA,VOUT=3.0V)

Typ. 0.22V (VR2) (IOUT=150mA,VOUT=3.0V)

Typ. 0.15V (VR3) (IOUT=100mA,VOUT=3.0V)

• High Ripple Rejection ....................................................... Typ. 70dB (f=1kHz),Typ. 65dB (f=10kHz),

• High Output Voltage Accuracy .......................................... ±2.0%

• Low Temperature-Drift Coefficient of Output Voltage........ Typ. ±100ppm/°C

• Excellent Line Regulation ................................................. Typ.0.02%/V

• Excellent Load Transient Response and Line Transient Response

• Small Package ................................................................ SON-8

• Built-in fold-back protection circuit .................................... Typ.50mA (VR1), Typ.40mA (VR2,VR3)

• Ceramic Capacitor Recommended for Output 1.0µF or more

APPLICATIONS

• Power source for cellular phones and portable communication equipment.

• Power source for electrical appliances such as cameras, VCRs.

• Power source for battery-powered equipment.

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