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RICOH

R1170S Datasheet Preview

R1170S Datasheet

800mA LDO REGULATOR

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R1170x SERIES
800mA LDO REGULATOR
NO.EA-084-111027
OUTLINE
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.
FEATURES
Supply Current ............................................................. Typ. 80μA
Standby Current ........................................................... Typ. 0.1μA
Output Current ............................................................. Min. 800mA (VIN=VOUT+1.0V)
Dropout Voltage ........................................................... Typ. 0.12V (VOUT=3.0V, IOUT=300mA)
Output Voltage Accuracy.............................................. ±2.0%
Temperature-Drift Coefficient of Output Voltage .......... Typ.±100ppm/°C
Line Regulation ............................................................ Typ. 0.05%/V
Output Voltage ............................................................. 1.5V to 5.0V (0.1V steps)
(For other voltages, please refer to MARK INFORMATIONS.)
Packages ..................................................................... HSON-6, SOT-89-5, HSOP-6J
Built-in Current Limit Circuit
Built-in Thermal Shutdown Circuit
Ceramic capacitors are recommended to be used with this IC
APPLICATIONS
Local Power source for Notebook PC.
Local Power source for portable appliances, cameras, and videos.
Local Power source for equipment of battery-use.
Local Power source for home appliances.
1




RICOH

R1170S Datasheet Preview

R1170S Datasheet

800mA LDO REGULATOR

No Preview Available !

R1170x
BLOCK DIAGRAMS
R1170xxx1A
VDD
VOUT VDD
R1170Dxxx1B
VOUT
Vref Vref
Current Limit
Thermal Shutdown
Current Limit
Thermal Shutdown
CE GND CE GND
SELECTION GUIDE
The output voltage, the chip-enable polarity, package for the ICs can be selected at the user’s request.
Product Name
Package
Quantity per Reel
Pb Free
Halogen Free
R1170Dxx1-TR-FE
HSON-6
3,000 pcs Yes Yes
R1170Hxx1-T1-FE
SOT-89-5 1,000 pcs Yes Yes
R1170Sxx1-E2-FE
HSOP-6J
1,000 pcs
Yes
xx: The output voltage can be designated in the range from 1.5V(15) to 5.0V(50) in 0.1V steps.
(For other voltages, please refer to MARK INFORMATIONS.)
Yes
: CE pin polarity are options as follows.
(A) "L" active
(B) "H" active
2


Part Number R1170S
Description 800mA LDO REGULATOR
Maker RICOH
Total Page 22 Pages
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