LOW NOISE 150mA LDO REGULATOR
The R1112N Series are voltage regulator ICs with high output voltage accuracy,
extremely low supply current, low ON-resistance, and high ripple rejection by CMOS process. Each of these voltage
regulator ICs consists of a voltage reference unit, an error amplifier, resistors, a current limit circuit,
and a chip enable circuit. These ICs perform with low dropout voltage and a chip enable function. The line
transient response and load transient response of the R1112N 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 fixed
with high accuracy.
Since the package for these ICs are SOT-23-5(Mini-mold)
package , high density mounting of the ICs on boards is possible. |
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 Ultra-Low
Supply Current |
TYP. 100µA |
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| Standby
Mode |
TYP. 0.1µA |
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| Low
Dropout Voltage |
TYP. 0.19V(IOUT =100mA 3.0V Output type) |
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| High
Ripple Rejection |
TYP. 80dB(f=1kHz) |
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| Low
Temperature-Drift Coefficient of Output Voltage |
TYP. ±100ppm/°C |
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| Excellent
Line Regulation |
TYP. 0.05%/V |
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| High
Output Voltage Accuracy |
±2.0% |
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| Excellent
Dynamic Response |
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| Small
Package |
SOT-23-5(Mini-mold) |
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| Output
Voltage |
Stepwise setting with a step of 0.1V in the range of 1.5V to 5.0V is possible |
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| Built-in
chip enable circuit (2 types; A: active low , B: active high) |
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| Pin-out |
Similar to the LP2980/LP2985 |
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| Built-in
fold-back protection circuit |
TYP. 30mA (Current at short mode) |
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| Ceramic
capacitors recommended to be used with this IC |
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Power source for cellular phones such as GSM, CDMA and various kind
of PCSs.
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Power source for electrical appliances such as cameras, VCRs and camcorders.
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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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R1112N
Series
