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R1114 Schematic ( PDF Datasheet ) - RICOH

Teilenummer R1114
Beschreibung LOW NOISE 150mA LDO REGULATOR
Hersteller RICOH
Logo RICOH Logo 




Gesamt 30 Seiten
R1114 Datasheet, Funktion
R1114x SERIES
LOW NOISE 150mA LDO REGULATOR
NO.EA-094-0512
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
www.DataSheete4rUr.ocromamplifier, 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 packages for these ICs are SOT-23-5,
SC-82AB, and SON1612-6 therefore high density mounting of the ICs on boards is possible.
FEATURES
Low Supply Current ............................................................. Typ. 75µA
Standby Mode ...................................................................... Typ. 0.1µA
Low Dropout Voltage............................................................ Typ. 0.22V (IOUT=150mA 3.0V Output type)
High Ripple Rejection .......................................................... Typ. 70dB (f=1kHz 3.0V Output type)
............................................................................................. Typ. 60dB (f=10kHz)
Low Temperature-Drift Coefficient of Output Voltage........... Typ. ±100ppm/°C
Excellent Line Regulation .................................................... Typ. 0.02%/V
High Output Voltage Accuracy ............................................. ±2.0%
Small Packages ................................................................. SOT-23-5/SC-82AB/SON1612-6
Output Voltage ..................................................................... Stepwise setting with a step of 0.1V in
the range of 1.5V to 4.0V is possible
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 portable communication equipment.
Power source for electrical appliances such as cameras, VCRs and camcorders.
Power source for battery-powered equipment.
1






R1114 Datasheet, Funktion
R1114x
ELECTRICAL CHARACTERISTICS
R1114xxx1A
Topt=25°C
Symbol
Item
Conditions
Min. Typ. Max. Unit
VOUT
Output Voltage
VIN = Set VOUT+1V
1mA <= IOUT <= 30mA
×0.980
×1.020 V
IOUT Output Current
VINVOUT = 1.0V
150
mA
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VOUT/IOUT Load Regulation
VDIF Dropout Voltage
VIN = Set VOUT+1V
1mA <= IOUT <= 150mA
22 40 mV
Refer to the ELECTRICAL CHARACTERISTICS by OUTPUT
VOLTAGE
ISS Supply Current
VIN = Set VOUT+1V, IOUT = 0mA
75 95 µA
Istandby
Supply Current
(Standby)
VOUT/VIN Line Regulation
VIN = Set VOUT+1V
VCE = VDD
VOUT > 1.7V,
Set VOUT+0.5V <= VIN <= 6.0V
(VOUT <= 1.7V, 2.2V VIN <= 6.0V)
IOUT = 30mA
0.1 1.0 µA
0.02 0.10 %/V
RR Ripple Rejection
f=1kHz
f=10kHz
Ripple 0.5Vpp
VOUT > 1.7V, VINVOUT = 1.0V
VOUT <= 1.7, VINVOUT = 1.2V
IOUT = 30mA
70
60
dB
VIN Input Voltage
2.0 6.0 V
VOUT/
Topt
Output Voltage
IOUT = 30mA
Temperature Coefficient 40°C <= Topt <= 85°C
±100
ppm
/°C
Ilim Short Current Limit
VOUT = 0V
40 mA
RPU CE Pull-up Resistance
0.7 2.0 8.0 M
VCEH
CE Input Voltage “H”
1.5 6.0 V
VCEL CE Input Voltage “L”
0.0 0.3 V
en Output Noise
BW = 10Hz to 100kHz
30 µVrms
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R1114 pdf, datenblatt
R1114x
90
80
70
60
50
40
30
www.DataSheet4U.com 20
10
0
0
R1114x401x
123 45
Input Voltage VIN(V)
6
4) Output Voltage vs. Temperature
R1114x151x
1.53
1.52
1.51
1.50
1.49
1.48
1.47
1.46
-40
-15 10 35 60
Temperature Topt(°C)
4.08
4.06
4.04
4.02
4.00
3.98
3.96
3.94
3.92
-40
R1114x401x
-15 10 35 60
Temperature Topt(°C)
85
85
2.86
2.84
2.82
2.80
2.78
2.76
2.74
-40
R1114x281x
-15 10 35 60
Temperature Topt(°C)
85
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12 Page





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