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Low Noise 150 mA LDO Regulator

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R1114N Series
Low Noise 150 mA LDO Regulator for Automotive Applications
NO.EC-094-131219
OUTLINE
The R1114x Series are CMOS-based voltage regulator ICs with high output voltage accuracy, low supply
current, low ON-resistance, and high ripple rejection. Each of these ICs consists of a voltage reference unit, an
error amplifier, resistor-net for voltage setting, 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 R1114x 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 is SOT-23-5, the
high density mounting of the ICs on boards is possible.
FEATURES
Input Voltage Range (Maximum Rating) ............................ 2.0V to 6V (6.5V)
Supply Current ..................................................................... Typ. 75μA
Standby Mode ...................................................................... Typ. 0.1μA
Dropout Voltage ................................................................... Typ. 0.22V (IOUT=150mA 3.0V Output type)
Ripple Rejection................................................................... Typ. 70dB (f=1kHz 3.0V Output type)
Typ. 60dB (f=10kHz)
Output Voltage Range.......................................................... 1.5V to 4.0V (0.1V steps)
(For other voltages, please refer to MARK SPECIFICATION TABLE)
Output Voltage Accuracy...................................................... ±2.0%
Temperature-Drift Coefficient of Output Voltage .................. Typ. ±100ppm/°C
Line Regulation .................................................................... Typ. 0.02%/V
Output Noise ........................................................................ TYP. 30μVrms (BW=10Hz~100kHz)
Packages ............................................................................ SOT-23-5
Built-in Fold Back Protection Circuit .................................... Typ. 40mA (Current at short mode)
Ceramic capacitors are recommended to be used with this IC ... CIN=COUT=1μF (VOUT<2.5V)
CIN=1μF, COUT=0.47μF (VOUT >= 2.5V)
APPLICATIONS
Power source for accessories such as car audios, car navigation systems, and ETC systems
1
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R1114N Datasheet

Low Noise 150 mA LDO Regulator

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R1114N
NO.EC-094-131219
BLOCK DIAGRAMS
R1114xxx1A
1
VDD
CE
3
Vref
Current Limit
R1114xxx1D
VDD
-
+
Vref
Current Limit
CE
5
VOUT
VDD
GND
2
CE
VOUT
GND
R1114xxx1B
-
+
Vref
Current Limit
VOUT
GND
2
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Richo
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R1114N Datasheet

Low Noise 150 mA LDO Regulator

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R1114N pdf
R1114N
NO.EC-094-131219
SELECTION GUIDE
The output voltage, auto discharge function, and the taping type, etc. for the ICs can be selected at the user’s
request.
Product Name
Package
Quantity per Reel
Pb Free
Halogen Free
R1114Nxx1-TR-#E
SOT-23-5
3,000 pcs
Yes
Yes
xx: The output voltage can be designated in the range from 1.5V(15) to 4.0V(40) in 0.1V steps.
(For other voltages, please refer to MARK SPECIFICATION TABLE)
: CE pin polarity and auto discharge function at off state are options as follows.
(A) "L" active, without auto discharge function at off state
(B) "H" active, without auto discharge function at off state
(D) "H" active, with auto discharge function at off state
# : Specify Automotive Class Code
Operating
Temperature Range
A -40°C to 85°C
Guaranteed Specs
Temperature Range
25°C
Screening
High Temperature
* Auto-discharge function quickly lowers the output voltage to 0V, when the chip enable signal is switched from the active
mode to the standby mode, by releasing the electrical charge accumulated in the external capacitor.
PIN DESCRIPTIONS
z SOT-23-5
54
(mark side)
R1114N
Pin No.
1
2
3
4
5
123
Symbol
VDD
GND
CE or CE
NC
VOUT
Input Pin
Ground Pin
Chip Enable Pin
No Connection
Output pin
Description
3
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Part Number R1114N
Description Low Noise 150 mA LDO Regulator
Maker Richo
Total Page 26 Pages
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