LOW NOISE 150mA LDO REGULATOR
The R1122N 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 R1122N 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, 3V 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
Accuracy Output Voltage |
±2.0% |
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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 "L", B: active"H") |
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| Built-in
Fold-back protection circuit |
Short Current Typ. 30mA |
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| Pinout |
Similar to the TK112, TK111 l |
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| Ceramic
Capacitors are Recommendable to be used with this IC. |
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Power source for cellular phones such as GSM, CDMA,
PCS and so forth.
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Power source for domestic 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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R1122N
Series
