RICOH R5323x Series 150mA Dual LDO REGULATOR Data Sheet
Summary
The R5323x is a high-accuracy, dual LDO voltage regulator IC optimized for low power consumption and reliable performance in portable systems. This manual serves as a comprehensive guide for engineers, detailing electrical specifications, pin configurations, available packages (WLCSP, DFN, SOT-23), and selection parameters across various output voltages (1.5V–4.0V). It is specifically designed for power management in battery-powered equipment, such as handheld communication devices and cameras, requiring robust transient response and minimal standby current.
Page 1 Text Content
R5323x SERIES
150m A Dual LDO REGULATOR
NO.EA-089-120404
OUTLINE The R5323x Series are CMOS-based voltage regulator ICs with high output voltage accuracy, low supply current, low dropout, 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. These ICs perform with low dropout voltage due to built-in transistor with low ON resistance, and a chip enable function prolongs the battery life of each system. The line transient response and load transient response of the R5323x 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 internally fixed with high accuracy. Since the packages for these ICs are SOT-23-6 (Limited), DFN(PLP)1820-6 and WLCSP-6-P1 package, dual LDO regulators are included in each package, high density mounting of the ICs on boards is possible.
FEATURES • Supply Current Typ. 90μA (VR1, VR2) • Standby Mode Typ. 0.1μA (VR1, VR2) • Dropout Voltage Typ. 0.22V (IOUT=150m A , VOUT=3.0V) • Ripple Rejection....................................................... Typ.75d B(VOUT 2.4V),Typ.70d B(VOUT 2.5V), (f=1k Hz)
Typ.65d B(VOUT 2.4V),Typ.60d B(VOUT 2.5V), (f=10k Hz)
• Input Voltage Range 2.0V to 6.0V • Output Voltage Range.............................................. 1.5V to 4.0V (0.1V steps)
(For details, please refer to MARK INFORMATIONS.)
• Output Voltage Accuracy.......................................... ±2.0% • Temperature-drift Coefficient of Output Voltage....... Typ. ±100ppm/°C • Line Regulation Typ.0.02%/V • Built-in fold-back protection circuit Typ. 40m A (Current at short mode) • Packages ................................................................ WLCSP-6-P1, DFN(PLP)1820-6, SOT-23-6 (Limited) • Ceramic Capacitor is recommended........................ 1.0μF or more • Built-in chip enable circuit (A/B: active high)
APPLICATIONS • Power source for handheld communication equipment. • Power source for electrical appliances such as cameras, VCRs and camcorders. • Power source for battery-powered equipment.
Page Summary Contents For RICOH R5323x Series 150mA Dual LDO REGULATOR Data Sheet
Manual Details
| Brand | Ricoh |
|---|---|
| Pages | 24 |
| File Size | 345.71 KB |
| Published | June 01, 2026 |
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Frequently Asked Questions
What capacitor type and value are recommended for operation?
A ceramic capacitor of 1.0μF or more is recommended.
What is the typical current draw during standby mode?
The typical standby current (VR1, VR2) is 0.1μA.
How can I determine the specific output voltage for each channel?
The output voltage can be set in the range from 1.5V to 4.0V in 0.1V steps, determined by serial numbers.
Does this regulator feature overcurrent protection?
Yes, it includes a built-in fold-back protection circuit with a typical current of 40mA (Current at short mode).