300mA LDO REGULATOR
The R1130 Series are voltage regulator (VR) ICs by CMOS process. VR function has features
of high ripple rejection, low dropout voltage, high output voltage accuracy, and ultra-low supply current.
Each of these ICs consists of a voltage reference unit, an error amplifier, resistors for setting output voltage,
and a current limit circuit. Each of the R1130xxxxA/B type includes also a chip enable circuit.Output Voltage
of the R1130xxxxC type is adjustable with external resistors.
Output Voltage of R1130xxxxA/B is fixed in the IC. Low supply current by the merit of CMOS process and built-in
transistors with low ON-resistance make low dropout voltage. These regulators in the R1130 Series are remarkable
improvement on the current regulators in terms of ripple rejection, input transient response, and load transient
response. Maximum Output Current is large for its compact size.
Thus, the R1130 series are suitable for power supply for CD-drives, DVD-drives, and so forth.
Since the packages for these ICs are the SOT-89-5 package or HSON-6P, high density mounting of the ICs on boards is possible.
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 Ultra-Low
Supply Current |
TYP. 50µA |
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| Low
Standby Current |
TYP. 0.1µA (VR) for A type |
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| High
Ripple Rejection |
TYP. 60dB(f=1kHz)(VR) |
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| Output
Current |
MIN. 300mA(Vin=Vout+1V) |
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| Output
Voltage (VR) |
Stepwise setting with a step of 0.1V in the range of 1.5 to 5.0V(A/B Version)
(Reference 1.8V(C Version)) |
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| High
Output Voltage Accuracy |
±2.0%(VR) for A/B type, ±2.0%(Reference Voltage for adjustable
VR) for C type |
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| Low
Dropout Voltage |
TYP. 0.2V(IOUT=100mA)(VR) |
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| Small
Package |
SOT-89-5, HSON-6P |
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| Built-in
Current Limit Circuit |
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| Low
Temperature-drift Coefficient of Output Voltage |
TYP.±100ppm/°C
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| Absolute
Maximum Voltage |
9V |
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| Internal
Phase Compensation (small output capacitance such as 0.1uF Ceramic can be used with.) |
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Power source for CD-drives and DVD-drives, HDD.
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Local Power source for Notebook PC.
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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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R1130x
Series
