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'2002.7.17
LOW NOISE 150mA LDO REGULATOR
R1114X SERIES
g OUTLINE
The R1114X Series are CMOS-based voltage regulator ICs with high output voltage accuracy, extremely 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 packages for these ICs are SOT-23-5 and SC82-AB, therefore high density mounting of the ICs on boards is possible.
g FEATURES
l l l l l l l l l Low Supply Current......................................................... Typ. 75A Standby Mode................................................................... Typ. 0.1A Low Dropout Voltage ...................................................... Typ. 0.22V (IOUT=150mA 3.0V Output type) High Ripple Rejection..................................................... Typ. 70dB (f=1kHz 3.0V Output type) / 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 Package ..................................................................SOT-23-5/SC82-AB Output Voltage..................................................................Stepwise setting with a step of 0.1V in the range of 1.5V to 4.0V is possible l Built-in Fold Back Protection Circuit ...........................Typ. 40mA (Current at short mode) l Ceramic capacitors are recommended to be used with this IC CIN=COUT=1F(VOUT<2.5V) ...................................................................................................... CIN=1F, COUT=0.47F (VOUT2.5V)
g APPLICATIONS
l l l Power source for portable communication equipment. Power source for electrical appliances such as cameras, VCRs and camcorders. Power source for battery-powered equipment.
Rev. 1.10
-1-
g BLOCK DIAGRAMS
R1114XXX1A R1114XXX1B
VOUT VDD +
Vref Current Limit
VOUT VDD +
Vref Current Limit
CE
R1114XXX1D
GND
CE
GND
VDD
VOUT
+
Vref
Current Limit
CE
GND
g SELECTION GUIDE
The output voltage, version, and the taping type for the ICs can be selected at the user's request. The selection can be made with designating the part number as shown below; R1114XXX1X-XX Part Number ab c d Code a b Contents Designation of Package Type : N: SOT-23-5 Q: SC82-AB Setting Output Voltage (VOUT) : Stepwise setting with a step of 0.1V in the range of 1.5V to 4.0V is possible. Designation of Active Type : A : active low type B : active high type D : active high, with auto discharge Designation of Taping Type : Ex. TR (refer to Taping Specifications; TR type is the standard direction.)
c
Rev. 1.10
-2-
g PIN CONFIGURATION
SC 82AB 4 3
Mark side
SOT- 23 - 5 4 5
Mark side
1
2
1
2
3
g PIN DESCRIPTIONS
R1114Q Pin No. 1 2 3 4 R1114N Pin No. 1 2 3 4 5 VDD GND CE or CE NC VOUT Symbol Input Pin Ground Pin Chip Enable Pin No Connection Output pin Description Symbol CE or CE GND VOUT VDD Description Chip Enable Pin Ground Pin Output pin Input Pin
g ABSOLUTE MAXIMUM RATINGS
Item Input Voltage Input Voltage( CE or CE Pin) Output Voltage Output Current Power Dissipation Operating Temperature Range Storage Temperature Range Symbol VIN VCE VOUT IOUT PD Topt Tstg Rating 6.5 -0.3 ~ VIN+0.3 -0.3 ~ VIN+0.3 200 250 -40 ~ 85 -55 ~ 125 Unit V V V mA mW C C
Rev. 1.10
-3-
g ELECTRICAL CHARACTERISTICS
nR1114XXX1 X Symbol VOUT IOUT VOUT/IOUT VDIF ISS Istandby Item Output Voltage Output Current Load Regulation Dropout Voltage Supply Current Supply Current (Standby) Conditions Min. Typ. VIN = Set VOUT+1V VOUT 1mA IOUT 30mA x0.980 VIN - VOUT = 1.0V 150 VIN = Set VOUT+1V 22 40 1mA IOUT 150mA Refer to the ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE VIN = Set VOUT+1V, IOUT=0mA 75 95 VIN = Set VOUT+1V VCE = GND(B/D version) 0.1 1.0 = VDD(A version) VOUT>1.7V, Set VOUT+0.5V VIN 6.0V 0.02 0.10 (VOUT1.7V, 2.2V VIN 6.0V) IOUT = 30mA f=1kHz 70 f=10kHz 60 Ripple 0.5Vp-p VOUT>1.7V, VIN-VOUT=1.0V VOUT1.7,VIN-VOUT=1.2V IOUT =30mA 2.0 6.0 IOUT = 30mA 100 -40C Topt 85C VOUT = 0V 40 0.7 2.0 8.0 1.5 VIN 0.0 0.3 BW=10Hz to 100kHz 30 VCE=0V 60 Topt=25C Max. Unit VOUT V x1.020 mA mV
A A
VOUT/VIN
Line Regulation
%/V
RR
Ripple Rejection
dB
VIN VOUT/T Ilim RPU VCEH VCEL
en
RLOW
Input Voltage Output Voltage Temperature Coefficient Short Current Limit CE Pull-up Resistance CE Input Voltage "H" CE Input Voltage "L" Output Noise On Resistance of Nch for autodischarge (Only for D version)
V ppm /C mA M V V Vrms
nELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE Topt = 25C Output Voltage VOUT (V) VOUT = 1.5 VOUT = 1.6 VOUT = 1.7 1.8 VOUT 2.0 2.1 VOUT 2.7 2.8 VOUT 4.0 Dropout Voltage VDIF (V) Condition Typ. 0.38 0.36 0.34 IOUT = 150mA 0.32 0.28 0.22
Max. 0.70 0.65 0.60 0.55 0.50 0.35
Rev. 1.10
-4-
n TECHNICAL NOTES
When using these ICs, consider the following points: Phase Compensation In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For this purpose, use a capacitor COUT with good frequency characteristics and ESR (Equivalent Series Resistance). (Note: If additional ceramic capacitors are connected with parallel to the output pin with an output capacitor for phase compensation, the operation might be unstable. Because of this, test these ICs with as same external components as ones to be used on the PCB.) PCB Layout Make VDD and GND lines sufficient. If their impedance is high, noise pickup or unstable operation may result. Connect a capacitor with a capacitance value as much as 1.0F or more between VDD and GND pin, and as close as possible to the pins. Set external components, especially the output capacitor, as close as possible to the ICs, and make wiring as short as possible.
n TEST CIRCUITS
R11X4Xxx1B/D Series
R11X4Xxx1B/D Series
1.0F 1.0F 1.0F
1.0F
Fig.1 Standard test Circuit
Fig.2 Supply Current Test Circuit
R11X4Xxx1B/D Series
R11X4Xxx1B/D Series
1.0F
Fig.3 Ripple Rejection, Line Transient Response Test Circuit
Fig.4 Load Transient Response Test Circuit
Rev. 1.10
-5-
n TYPICAL APPLICATIONS
R11X4Xxx1 A Series
R11X4Xxx1 B Series
(External Components) Output Capacitor; Ceramic 0.47F (Set Output Voltage in the range from 2.5 to 4.0V ) Ceramic 1.0F (Set Output Voltage in the range from 1.5 to 2. 4V) Input Capacitor; Ceramic 1.0F
n TYPICAL CHARACTERISTICS
1) Output Voltage vs. Output Current R11X4X151X
1.6 1.4 Output Voltage VOUT(V) 1.2 1.0 0.8 0.6 0.4 0.2 2.0V 0.0 0 100 200 300 Output Current IOUT(mA) 400 2.5V 0.0 0 100 200 300 Output Current IOUT(mA) 400 1.8V Output Voltage VOUT(V) Topt=25C
R11X4X281X
3.0 2.5 2.0 1.5 1.0 3.1V 0.5 3.8V 3.5V
VIN=4.8V
VIN=3.5V
R11X4X401X
4.5 4.0 Output Voltage VOUT(V) 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0 100 200 300 Output Current IOUT (mA) 400 5.0V 4.5V 4.3V
VIN=6.0V
Rev. 1.10
-6-
2) Output Voltage vs. Input Voltage R11X4X151X
1.7 1.6 Output Voltage VOUT [V]
Topt=25C
R11X4X281X
2.9 2.8 2.7 Output Voltage VOUT[V]
1.5 1.4 1.3 1.2 1.1 1.0 1 2 3 4 Input Voltage VIN[V] 5 6 IOUT=1mA IOUT=30mA IOUT=50mA
2.6 2.5 2.4 2.3 2.2 2.1 2.0 2 3 4 Input Voltage VIN [V] 5 6 IOUT=1mA IOUT=30mA IOUT=50mA
R11X4X401X
4.2 IOUT=1mA 4.0 Output Voltage VOUT[V] 3.8 3.6 3.4 3.2 3.0 1 2 3 4 Input Voltage VIN[V] 5 6 IOUT=30mA IOUT=50mA
3) Supply Current vs. Input Voltage (Topt=25C) R11X4X151X
90 80 70 Supply Current ISS[uA] 60 50 40 30 20 10 0 0 1 2 3 4 Input Voltage VIN[V] 5 6 Supply Current ISS[uA] 90 80 70 60 50 40 30 20 10 0 0 1
R11X4X281X
2 3 4 Input Voltage VIN[V]
5
6
Rev. 1.10
-7-
R11X4X401X
90 80 70 Supply Current ISS(uA) 60 50 40 30 20 10 0 0 1 2 3 4 Input Voltage VIN(V) 5 6
4) Output Voltage vs. Temperature R11X4X151X
1.53 1.52
OUT Output Voltage V (V)
R11X4X281X
2.86 2.84 Output Voltage VOUT(V) 2.82 2.80 2.78 2.76 2.74 -40 -15 10 35 60 Temperature Topt (C) 85
1.51 1.50 1.49 1.48 1.47 1.46 -40 -15 10 35 60 85 Temperature Topt (C)
R11X4X401X
4.08 4.06 Output Voltage VOUT(V) 4.04 4.02 4.00 3.98 3.96 3.94 3.92 -40 -15 10 35 60 Temperature Topt (C) 85
Rev. 1.10
-8-
5) Supply Current vs. Temperature R11X4X151X
90 80 Supply Current Iss (uA) Supply Current Iss (uA) 70 60 50 40 30 20 10 0 -40 -15 10 35 60 85 Temperature Topt (C) 90 80 70 60 50 40 30 20 10 0 -40 -15
R11X4X281X
10 35 60 Temperature Topt (C)
85
R11X4X401X
90 80 Supply Current Iss(uA) 70 60 50 40 30 20 10 0 -40 -15 10 35 60 Temperature Topt (C) 85
6) Dropout Voltage vs. Temperature R11X4X151X
0.6 0.6
R11X4X161X
0.5
DIF Dropout Voltage V [V]
0.4
Dropout Voltage VDIF[V]
85C 25C -40C
0.5
0.4
85C 25C -40C
0.3
0.3
0.2
0.2
0.1
0.1
0.0 0 25 50 75 100 Output Current IOUT[mA] 125 150
0.0 0 25 50 75 100 Output Current IOUT[mA] 125 150
Rev. 1.10
-9-
R11X4X171X
0.6 0.5 Dropout Voltage VDIF[V] 0.4 0.3 0.2 0.1 0.0 0 25 50 75 100 Output Current IOUT[mA] 125 150 0.6 0.5 Dropout Voltage VDIF[V]
R11X4X181X
85C 25C -40C
0.4 0.3 0.2 0.1 0.0 0 25
85C 25C -40C
50 75 100 Output Current IOUT[mA]
125
150
R11X4X211X
0.40 0.35 Dropout Voltage VDIF[V] 0.30 0.25 0.20 0.15 0.10 0.05 0.00 0 25 50 75 100 Output Current IOUT[mA] 125 150 0.40 0.35
DIF Dropout Voltage V [V]
R11X4X281X
85C 25C -40C
0.30 0.25 0.20 0.15 0.10 0.05 0.00 0 25
85C 25C -40C
50 75 100 Output Current IOUT[mA]
125
150
R11X4X401X
0.40 0.35 0.30 Dropout Voltage VDIF[V] 0.25 0.20 0.15 0.10 0.05 0.00 0 25 50 75 100 Output Current IOUT[mA] 125 150
85C 25C -40C
Rev. 1.10
- 10 -
7) Dropout Voltage vs. Set Output Voltage (Topt=25C)
0.60 10mA 0.50
DIF Dropout Voltage V (V)
30mA 50mA 150mA
0.40
0.30
0.20
0.10
0.00 1.0 1.5 2.0 2.5 3.0 Set Output Voltage Vreg(V) 3.5 4.0
8) Ripple Rejection vs. Input Bias Voltage (Topt=25C, Cin=none, Cout=ceramic0.47F) R11X4X281X (Ripple 0.2Vp-p, IOUT=1mA) R11X4X281X(Ripple 0.5Vp-p, IOUT=1mA)
90 80 Ripple Rejection RR[dB] Ripple Rejection RR[dB] 70 60 50 40 30 20 10 0 2.9 3.0 3.1 Input Voltage VIN[V] 3.2 3.3 f = 1kHz f = 10kHz f = 100kHz 10 0 2.9 3.0 3.1 3.2 Input Voltage VIN[V] 3.3 90 80 70 60 50 40 30 20 f = 1kHz f = 10kHz f = 100kHz
R11X4X281X (Ripple 0.2Vp-p, IOUT=30mA)
90 80 Ripple Rejection RR[dB] Ripple Rejection RR[dB] 70 60 50 40 30 20 10 0 2.9 3.0 3.1 3.2 Input Voltage VIN[V] 3.3 f = 1kHz f = 10kHz f = 100kHz 90 80 70 60 50 40 30 20 10 0
R11X4X281X(Ripple 0.5Vp-p, IOUT=30mA)
f = 1kHz f = 10kHz f = 100kHz 2.9 3.0 3.1 3.2 Input Voltage VIN[V] 3.3
Rev. 1.10
- 11 -
R11X4X281X (Ripple 0.2Vp-p, IOUT=50mA)
90 80 Ripple Rejection RR [dB] Ripple Rejection RR[dB] 70 60 50 40 30 20 10 0 2.9 3.0 3.1 Input Voltage VIN[V] 3.2 3.3 f = 1kHz f = 10kHz f = 100kHz 90 80 70 60
R11X4X281X(Ripple 0.5Vp-p, IOUT=50mA)
f = 1kHz f = 10kHz f = 100kHz
50 40 30 20 10 0 2.9 3.0 3.1 Input Voltage VIN[V] 3.2 3.3
9) Ripple Rejection vs. Frequency (Cin=none) R11X4X151X (VIN=2.5V DC+0.5Vp-p, COUT= Ceramic 1.0F)
90 80 Ripple Rejection RR[dB]
R11X4X151X (VIN=2.5V DC+0.5Vp-p, COUT= Ceramic 2.2F)
90 80 Ripple Rejection RR[dB] 70 60 50 40 30 Iout=1mA 20 10 0 Iout=30mA Iout=50mA 0.1 1 10 Frequency f[kHz] 100
70 60 50 40 Iout=1mA 30 20 10 0 0.1 1 10 Frequency f[kHz] 100 Iout=30mA Iout=50mA
R11X4X281X (VIN=3.8VDC+0.5Vp-p,COUT=Ceramic 0.47F)
90 80 Ripple Rejection RR[dB]
R11X4X281X (VIN=3.8V DC+0.5Vp-p, COUT= Ceramic 1.0F)
90 80 Ripple Rejection RR[dB] 70 60 50 40 30 20 10 0 Iout=1mA Iout=30mA Iout=50mA 0.1 1 10 Frrequency f[kHz] 100
70 60 50 40 30 20 10 0 0.1 1 10 Frequency f[kHz] 100 Iout=1mA Iout=30mA Iout=50mA
Rev. 1.10
- 12 -
R11X4X401X (VIN=5.0VDC+0.5Vp-p, COUT=Ceramic 0.47F)
90 80 Ripple Rejection RR [dB]
R11X4X401X (VIN=5.0V DC+0.5Vp-p, COUT= Ceramic 1.0F)
90 80 70 Ripple Rejection RR[dB] 60 50 40 30 Iout=1mA 20 10 0 Iout=30mA Iout=50mA
70 60 50 40 30 20 10 0 0.1 1 10 Frequency f[kHz] 100 Iout=1mA Iout=30mA Iout=50mA
0.1
1 10 Frequency f[kHz]
100
10) Input Transient Response (IOUT =30mA, CIN=none, tr=tf=5s, COUT=Ceramic 0.47F) R11X4X151X
1.55 Output Voltage VOUT[V] 1.54 1.53 1.52 1.51 1.50 1.49 0 10 20 30 40 50 Time t[us] 60 70 80 90 4 3 2 1 0 -1 -2 100 Input Voltage VIN[V] Input Voltage VIN[V]
R11X4X281X
2.85 Output Voltage VOUT[V] 2.84 2.83 2.82 2.81 2.80 2.79 0 10 20 30 40 50 Time t[us] 60 70 80 90 6 5 4 3 2 1 0 100
Rev. 1.10
- 13 -
11) Load Transient Response(tr=tf=0.5s, CIN= Ceramic 1.0F) R11X4X151X (V IN=2.5V, COUT= Ceramic 1.0F)
1.75 Output Voltage VOUT [V] 1.70 1.65 1.60 1.55 1.50 1.45 0 2 4 6 8 10 Time t[us] 12 14 16 18 20 150 Output Current IOUT[mA] Output Current IOUT[mA] Output Current IOUT[mA] 100 50 0 -50 -100 -150
R11X4X151X (V IN=2.5V, COUT= Ceramic 2.2F)
1.75 Output Voltage VOUT[V] 1.70 1.65 1.60 1.55 1.50 1.45 0 2 4 6 8 10 Time t[us] 12 14 16 18 20 150 100 50 0 -50 -100 -150
R11X4X281X (V IN=3.8V, COUT= Ceramic 0.47F)
3.05 3.00 Output Voltage VOUT[V] 2.95 2.90 2.85 2.80 2.75 0 2 4 6 8 10 Time t[us] 12 14 16 18 20 150 100 50 0 -50 -100 -150
Rev. 1.10
- 14 -
R11X4X281X (V IN=3.8V, COUT= Ceramic 1.0F)
3.05 3.00
OUT Output Voltage V [V]
150 100 50 0 -50 -100 -150 0 2 4 6 8 10 Time t[us] 12 14 16 18 20 Output Current IOUT[mA] 6 5 4 3 2 1 0 -1 50 100 150 200 250 300 350 400 450 Time t[us] Output Voltage VOUT[V] VIN Iout=0mA Iout=30mA Iout=150mA
2.95 2.90 2.85 2.80 2.75
R11X4X281X (V IN=3.8V, COUT= Ceramic 2.2F)
3.05 Output Voltage VOUT[V] 3.00 2.95 2.90 2.85 2.80 2.75 0 2 4 6 8 10 Time t[us] 12 14 16 18 20 150 Output Current IOUT[mA] 100 50 0 -50 -100 -150
12) Turn-on/off speed with CE pin (D version) R11X4X151D ( VIN=2.5V, CIN=Ceramic 1.0A, COUT=Ceramic 1.0F)
4 3 CE Input Voltage VCE[V] 2 1 0 VIN Iout=0mA Iout=30mA Iout=150mA 6 5 Output Voltage VOUT[V] 4 3 2 1 0 -1 -5 0 5 10 Time t[us] 15 20 25 CE Input Voltage VCE[V] 4 3 2 1 0 -1 -2 -3 -50
-1 -2 -3
0
Rev. 1.10
- 15 -
R11X4X281D ( VIN=3.8V, CIN=Ceramic 0.47A, COUT=Ceramic 0.47F)
4 3 CE Input Voltage VCE[V] 2 1 0 -1 -2 -3 -4 -5 -5 0 5 10 Time t[us] 15 20 25 VIN Iout=0mA Iout=30mA Iout=150mA 8 7 Output Voltage VOUT[V] CE Input Voltage VCE[V] 6 5 4 3 2 1 0 -1 4 3 2 1 0 -1 -2 -3 -4 -5 -20 0 20 40 VIN Iout=0mA Iout=30mA Iout=150mA 5 4 3 2 1 0 -1 60 80 100 120 140 160 180 Time t[us] Output Voltage VOUT[V] Output Voltage VOUT[V] 6 8 7
R11X4X401D ( VIN=5.0V, CIN=Ceramic 0.47A, COUT=Ceramic 0.47F)
8 6 CE Input Voltage VCE[V] 4 2 0 VIN Iout=0mA Iout=30mA Iout=150mA 14 12 CE Input Voltage VCE[V] Output Voltage VOUT[V] 10 8 6 4 2 0 -2 -5 0 5 10 Time t[us] 15 20 25 8 6 4 2 0 -2 -4 -6 -8 -20 VIN Iout=0mA Iout=30mA Iout=150mA 14 12 10 8 6 4 2 0 -2 60 80 100 120 140 160 180 Time t[us]
-2 -4 -6 -8
0
20
40
n TECHNICAL NOTES
When using these ICs, consider the following points: In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For this purpose, use a capacitor COUT with good frequency characteristics and ESR (Equivalent Series Resistance) of which is in the range described as follows:
Rev. 1.10
- 16 -
CE
VOUT
R11X4XXX1B/D
Ceramic Cap. VIN GND
Ceramic Cap. ESR IOUT
Spectrum Analyzer
S.A.
VIN
Measuring Circuit for white noise; R11X4XXX1B/D The relations between IOUT (Output Current) and ESR of an output capacitor are shown below. The conditions when the white noise level is under 40V(Avg.) are marked as the hatched area in the graph. (Note: If additional ceramic capacitors are connected to the Output Pin with Output capacitor for phase compensation, the operation might be unstable. Because of this, test these ICs with as same external components as ones to be used on the PCB.) (1) VIN=VOUT+1V (2) Frequency Band: 10Hz to 2MHz (3) Temperature: -40C to 25C R11X4X151X
(CIN=Ceramic 1.0A, COUT=Ceramic 1.0F) 100
100
R11X4X161X
(CIN=Ceramic 0.47A, COUT=Ceramic 0.68F)
10 ESR [Ohm]
ESR [Ohm]
10
1
1
0.1
0.1
0.01 0 30 60 90 Load Current IOUT [ mA ] 120 150
0.01 0 30 60 90 120 150
L o a d C u r r e n t I OUT[ m A ]
Rev. 1.10
- 17 -
R11X4X211X
(CIN=Ceramic 0.47A, COUT=Ceramic 0.47F) 100 100
R11X4X281X
(CIN=Ceramic 0.47A, COUT=Ceramic 0.47F)
10 ESR [Ohm]
10 ESR [Ohm] 0 30 60 90 Load Current IOUT [mA] 120 150
1
1
0.1
0.1
0.01
0.01 0 30 60 90 Load Current IOUT[mA] 120 150
Rev. 1.10
- 18 -

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