800mA LDO REGULATOR
The R1170x Series are positive voltage regulator ICs by CMOS process. The R1170x Series
have features of
high ripple rejection, low dropout voltage, high output voltage accuracy, low consumption current. Each of these
ICs consists of a voltage reference unit, an error amplifier, resistor net for setting output voltage, a current
limit
circuit at short mode, a chip enable circuit, and thermal-shunt circuit. Output Voltage of R1170 is fixed in
the IC.
Low consumption current by the merit of CMOS process and built-in transistors with low ON-resistance make
low dropout voltage and chip enable function prolong the battery life. These regulators 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 R1170x Series are suitable for various power sources for portable appliances.
Since the packages for these ICs are the SOT-89-5 package, HSON-6,or HSOP-6J, high density mounting of
the ICs on boards is possible. |
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 Ultra-Low
Supply Current |
Typ. 80µA |
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| Low
Standby Current |
Typ. 0.1µA |
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| Output
Current |
Min. 800mA (VIN=VOUT+1.0V) |
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| Low
Dropout Voltage |
Typ. 0.12V (VOUT=3.0V, IOUT=300mA)
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| High
Output Voltage Accuracy |
±2.0% |
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| Low
Temperature-drift Coefficient of Output Voltage |
Typ. ±100ppm/°C |
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| Line
Regulation |
Typ. 0.05%/V |
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| Output
Voltage |
1.5V to 5.0V |
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| Small
Package |
SOT-89-5, HSON-6, HSOP-6J
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| Built-in
Current Limit Circuit |
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| Built-in
Thermal Shuntdown Circuit |
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Local Power source for Notebook PC.
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Local Power source for portable appliances,
cameras, and videos. |
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Local Power source for equipment of battery-use. |
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Local Power source for home appliances. |
| * 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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R1170x
Series
