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R1131D151B

Low Voltage 300mA LDO REGULATOR


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R1131D151B pdf
R1131x SERIES
Low Voltage 300mA LDO REGULATOR
NO.EA-116-061102
OUTLINE
The R1131x Series are CMOS-based low voltage regulator ICs with output voltage range from 0.8V to 3.3V.
The minimum operating voltage is 1.4V. Each of these voltage regulator ICs consists of a voltage reference unit,
www.DataSheeta4nU.ceormror amplifier, resistors for setting output voltage, a current limit circuit, and a chip enable circuit.
To prevent the destruction by over current, current limit circuit is included. Standby mode realizes ultra small
consumption current.
The output voltage of these ICs is internally fixed with high accuracy. Since the packages for these ICs are
SOT-23-5, SON-6, and HSON-6, high density mounting of the ICs on boards is possible.
FEATURES
Supply Current ..................................................Typ. 80µA (VOUT < 1.8V)
Typ. 60µA (VOUT >= 1.8V)
Standby Mode ...................................................Typ. 0.1µA
Low Dropout Voltage.........................................Typ. 0.48V(IOUT=300mA Output Voltage=1.0V Type)
Typ. 0.31V(IOUT=300mA Output Voltage=1.5V Type)
Typ. 0.23V(IOUT=300mA Output Voltage=3.0V Type)
Ripple Rejection................................................Typ. 65dB(f=1kHz)
Low Temperature-Drift Coefficient of Output Voltage Typ. ±100ppm/°C
Excellent Line Regulation .................................Typ. 0.01%/V
Output Voltage Accuracy...................................±2.0%
Packages .........................................................SOT-23-5, SON-6, HSON-6
Output Voltage Range.......................................0.8V to 3.3V
Input Voltage Range .........................................1.4V to 3.3V
Built-in fold-back protection circuit ....................Typ. 50mA (Current at short mode)
External Capacitors...........................................CIN=COUT=Tantalum 1.0µF (VOUT < 1.0V)
CIN=COUT=Ceramic 1.0µF (VOUT >= 1.0V)
APPLICATIONS
Precision Voltage References.
Power source for electrical appliances such as cameras, VCRs and hand-held communication equipment.
Power source for battery-powered equipment.
1



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R1131D151B pdf
R1131x
BLOCK DIAGRAM
R1131xxxxA
VDD
VOUT
VDD
R1131xxxxB
VOUT
www.DataSheet4U.com
CE
VDD
Vref
Current Limit
R1131xxxxD
GND
CE
VOUT
Vref
Current Limit
GND
Vref
Current Limit
CE
GND
SELECTION GUIDE
The output voltage, the chip enable polarity, package type, and the taping type for the ICs can be selected at
the user's request. The selection can be available by designating the part number as shown below;
R1131xxxxx-xx-x Part Number
↑ ↑ ↑↑ ↑ ↑
a b a'c d e
Code
a, a'
b
c
d
e
Contents
Designation of Package Type :
R1131Nxx1x: SOT-23-5 (Mini-mold)
R1131Dxx1x: SON-6,
R1131Dxx2x: HSON-6
Setting Output Voltage (VOUT):
Stepwise setting with a step of 0.1V in the range of 0.8V to 3.3V is possible.
If the output=1.85V, then the code is R1131x18xx5.
If the output=2.85V, then the code is R1131x28xx5.
Designation of Chip Enable Option :
A:“L” active type.
B:“H” active type.
D:"H" active and with auto discharge function
Designation of Taping Type : TR
Refer to Taping Specifications
Designation of composition of plating:
F : Lead free plating (SOT-23-5,SON-6,HSON-6)
2



Part Number R1131D151B
Description Low Voltage 300mA LDO REGULATOR
Maker RICOH - RICOH
Total Page 30 Pages
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