Low Voltage 300mA LDO REGULATOR
The R1131x Series are CMOS-based low voltage regulator ICs with output voltage range from 0.8V to 3.3V.
The minimum operating voltage is 1.4V. 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.
To prevent the destruction by over current, current limit circuit is included. Standby mode realizes ultra small
consumption current.
The output voltage of these ICs is internally fixed with high accuracy. Since the packages for these ICs are
SOT-23-5, SON-6, and HSON-6, high density mounting of the ICs on boards is possible. |
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 Supply Current |
Typ. 80µA (VOUT < 1.8V)
Typ. 60µA (VOUT ≥ 1.8V) |
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| Standby
Mode |
Typ. 0.1µA |
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| Low
Dropout Voltage |
Typ. 0.48V(IOUT=300mA Output Voltage=1.0V Type)
Typ. 0.31V(IOUT=300mA Output Voltage=1.5V Type)
Typ. 0.23V(IOUT=300mA Output Voltage=3.0V Type) |
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| Ripple Rejection |
Typ. 65dB (f=1kHz) |
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Low Temperature-Drift Coefficient of Output Voltage |
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Typ. ±100ppm/°C |
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| Excellent
Line Regulation |
Typ. 0.01%/V |
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| Output Voltage Accuracy |
±2.0% |
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| Packages |
SOT-23-5, SON-6, HSON-6 |
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| Output
Voltage Range |
0.8V to 3.3V |
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| Input Voltage Range |
1.4V to 3.3V
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Built-in fold-back protection circuit |
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Typ. 50mA (Current at short mode) |
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| External Capacitors |
CIN=COUT=Tantalum 1.0µF (VOUT < 1.0V)
CIN=COUT=Ceramic 1.0µF (VOUT ≥ 1.0V) |
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Precision Voltage References.
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Power source for electrical appliances such as cameras, VCRs and hand-held
communication equipment.
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Power source for battery-powered equipment.
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| * All PDF files are less than 1MB unless otherwise stated. |
| * If you don't have Adobe Reader, you can download free. |
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Technical Info.
Technical Information on Ricoh Power Management ICs.
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Product Catalog
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| Selection guide is available for download in PDF format. |
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R1131x
Series
