R5326X_07 Datasheet, PDF (1/35 Pages) RICOH electronics devices division – Automatic Mode Shift 2ch 150mA LDO

R5326x SERIES
Automatic Mode Shift 2ch 150mA LDO
NO.EA-138-070806
OUTLINE
The R5326x Series are CMOS-based voltage regulator ICs with high output voltage accuracy, Typ. 5.5µA low
supply current, and remarkably improved transient response compared with the conventional low supply current
voltage regulators. The supply current of IC itself is automatically shifts between fast mode and low power mode
depending on the load current. (The current threshold is fixed internally.) Each of these voltage regulator ICs
consists of a voltage reference unit, an error amplifier, resistors for setting the output voltage, a current limit
circuit for preventing from the destruction by an over current, and so on.
The chip enable function realizes the standby mode with ultra low supply current.
Since the packages for these ICs are SOT-23-6 and PLP1820-6, and chip size package, WLCSP-6-P1, 2ch
LDO regulators are included in each package, high density mounting of the ICs on boards is possible.
FEATURES
• Supply Current (Low Power Mode)...................Typ. 5.5µA×2 (VR1&VR2) (IOUT=0mA)
• Supply Current (Fast Mode)..............................Typ. 50µA×2 (VR1&VR2) (IOUT=10mA)
• Standby Current ................................................Typ. 0.1µA (VR1&VR2)
• Input Voltage .....................................................1.4V to 6.0V
• Output Voltage ..................................................0.8V to 4.2V
• Dropout Voltage ................................................Typ. 0.19V (IOUT=150mA, VOUT=2.8V)
• Output Voltage Accuracy...................................±1.0% (VOUT ^>= 1.5V)
• Ripple Rejection................................................Typ. 70dB (f=1kHz)
Typ. 60dB (f=10kHz)
• Line Regulation .................................................Typ. 0.02%/V
• Packages .........................................................WLCSP-6-P1, PLP1820-6, SOT-23-6
• Built-in fold-back protection circuit ....................Typ. 50mA (Current at short mode)
• Ceramic Capacitor is recommended. ..............1.0µF to 3.3µF
(Depending on VIN and set VOUT. Refer to the electrical characteristics table.)
APPLICATIONS
• Power source for handheld communication equipment.
• Power source for electrical appliances such as cameras, VCRs and camcorders.
• Power source for battery-powered equipment.
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