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LOW NOISE 150mA LDO REGULATOR
51 6(5,(6
NO. EA-057-0204
OUTLINE
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FEATURES
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
APPLICATIONS
* 3RZHU VRXUFH IRU FHOOXODU SKRQHV VXFK DV *60 &'0$ DQG YDULRXV NLQG RI 3&6V * 3RZHU VRXUFH IRU HOHFWULFDO DSSOLDQFHV VXFK DV FDPHUDV 9&5V DQG FDPFRUGHUV * 3RZHU VRXUFH IRU EDWWHU\SRZHUHG HTXLSPHQW
1
R1111N
BLOCK DIAGRAM
R1111Nxx1A R1111Nxx1B
1 VDD
5 VOUT
1 VDD
5 VOUT
Vref CE 3 Current Limit GND 2
CE 3
Vref Current Limit GND 2
SELECTION GUIDE
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2
R1111N
PIN CONFIGURATION
SOT-23-5
5 4
VOUT (mark side) VDD GND
NC
CE
1
2
3
PIN DESCRIPTION
Pin No. 9'' *1'
RU &(
Symbol
Description ,QSXW 3LQ *URXQG 3LQ &KLS (QDEOH 3LQ 1R &RQQHFWLRQ 2XWSXW SLQ
1& 9287
ABSOLUTE MAXIMUM RATINGS
Item ,QSXW 9ROWDJH ,QSXW 9ROWDJH RU &( 3LQ 2XWSXW 9ROWDJH 2XWSXW &XUUHQW 3RZHU 'LVVLSDWLRQ 2SHUDWLQJ 7HPSHUDWXUH 5DQJH 6WRUDJH 7HPSHUDWXUH 5DQJH Symbol 9,1 9&( 9287 ,287 3' 7RSW 7VWJ Rating a 9,1 a 9,1 a a Unit 9 9 9 P$ P: & &
3
R1111N
ELECTRICAL CHARACTERISTICS
* R1111Nxx1A Symbol 9287 ,287 9287,287 9',) ,66 ,VWDQGE\ 92879,1 55 9,1 92877 ,OLP 538 9&(+ 9&(/ HQ Item 2XWSXW 9ROWDJH 2XWSXW &XUUHQW /RDG 5HJXODWLRQ 'URSRXW 9ROWDJH 6XSSO\ &XUUHQW 6XSSO\ &XUUHQW 6WDQGE\ /LQH 5HJXODWLRQ 5LSSOH 5HMHFWLRQ ,QSXW 9ROWDJH 2XWSXW 9ROWDJH 7HPSHUDWXUH &RHIILFLHQW 6KRUW &XUUHQW /LPLW
3XOOXS 5HVLVWDQFH ,QSXW 9ROWDJH +
7RSW & Conditions 9,1 6HW 9287 9 P$ ,287 P$ 92/7$*( 9,1 6HW 9287 9 P$ ,287 P$ 92/7$*( 9,1 9,1 ,287 I 9,1 6HW 9287 9 9&( P$ N+] 5LSSOH 9SS 6HW 9287 9 ,287 9287 P$ 9 %: +] N+] & 7RSW & 9,1 6HW 9287 9 $ $ 9 G% 9 SSP & P$ 0 9 9 9UPV P9 Min. 9287 x Typ. Max. 9287 x Unit 9
5HIHU WR WKH (/(&75,&$/ &+$5$&7(5,67,&6 E\ 287387
5HIHU WR WKH (/(&75,&$/ &+$5$&7(5,67,&6 E\ 287387
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4
R1111N
* R1111Nxx1B Symbol 9287 ,287 9287,287 9',) ,66 ,VWDQGE\ 92879,1 55 9,1 92877 ,OLP 53' 9&(+ 9&(/ HQ Item 2XWSXW 9ROWDJH 2XWSXW &XUUHQW /RDG 5HJXODWLRQ 'URSRXW 9ROWDJH 6XSSO\ &XUUHQW 6XSSO\ &XUUHQW 6WDQGE\ /LQH 5HJXODWLRQ 5LSSOH 5HMHFWLRQ ,QSXW 9ROWDJH 2XWSXW 9ROWDJH 7HPSHUDWXUH &RHIILFLHQW 6KRUW &XUUHQW /LPLW &( 3XOOGRZQ 5HVLVWDQFH &( ,QSXW 9ROWDJH + &( ,QSXW 9ROWDJH / 2XWSXW 1RLVH %: +] N+] ,287 9287 P$ 9 & 7RSW & 9,1 Conditions 6HW 9287 9 P$ ,287 P$ 92/7$*( 9,1 6HW 9287 9 P$ ,287 P$ 92/7$*( 9,1 9,1 6HW 9287 9 6HW 9287 9 9,1 Min. 9287 x Typ. Max. 9287 x
7RSW & Unit 9
5HIHU WR WKH (/(&75,&$/ &+$5$&7(5,67,&6 E\ 287387
P9
5HIHU WR WKH (/(&75,&$/ &+$5$&7(5,67,&6 E\ 287387 $ $ 9 G% 9 SSP & P$ 0 9 9 9UPV
9&( *1' 6HW 9287 9 9,1 9 ,287 I 9,1 P$ .+] 5LSSOH 9SS 6HW 9287 9
5
R1111N
* ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE 7RSW Output Current Output Voltage 9287 9287 IOUT (mA) Condition 9,1 9287 9 Min. 7RSW Dropout Voltage Output Voltage VOUT (V) Condition 9287 9287 9287 9287 9287 ,287 P$ VDIF (V) Min. Typ. Max. & &
OPERATION
R1111Nxx1A R1111Nxx1B
1 VDD
5 VOUT
1 VDD
5 VOUT
R1 Vref CE 3 Current Limit R2 GND
CE 3 Vref Current Limit
R1
R2
GND
2
2
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6
R1111N
TEST CIRCUITS
CE 3
3 CE
IN
VDD 1
VOUT R1111Nxx1B Series 5
OUT IOUT 2.2F
IN ISS
VDD 1
VOUT R1111Nxx1B Series 5
OUT
2.2F 2 0.1F GND
2 0.1F GND
Fig.1 Standard test Circuit
CE 3
Fig.2 Supply Current Test Circuit
CE 3
IN
VDD 1
VOUT R1111Nxx1B Series 5
OUT IOUT
IN
VDD 1
VOUT R1111Nxx1B Series 5
OUT
P.G
2 GND 1F
2 GND I1 I2
Fig.3 Ripple Rejection, Line Transient Response Test Circuit
Fig.4 Load Transient Response Test Circuit
7
R1111N
TYPICAL CHARACTERISTICS
1) Output Voltage vs. Output Current R1111N181B
Topt = 25C
R1111N301B
Topt = 25C
2.0 1.8
2.8V
3.5 3.0
Output Voltage VOUT (V)
3.8V
5.0V 4.0V
Output Voltage VOUT (V)
1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0
2.5 2.0 1.5 1.0 0.5 0.0
VIN = 3.3V 3.5V
2.3V
VIN = 2.1V
100
200 300 400 Output Current IOUT (mA)
500
0
100
200 300 400 Output Current IOUT (mA)
500
R1111N401B
Topt = 25C
R1111N501B
Topt = 25C
5.0 4.5
6.0 5.0
Output Voltage VOUT (V)
4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0 100 200 300 400 Output Current IOUT (mA) 500
VIN = 4.3V
7.0V 6.0V 5.5V
Output Voltage (V)
6.0V 5.0V 4.5V
4.0 3.0 2.0
VIN = 5.3V
1.0 0.0 0 100 200 300 400 Output Current IOUT (mA) 500
2)
Output Voltage vs. Input Voltage R1111N181B
Topt = 25C
R1111N301B
Topt = 25C
2.0 1.9
Output Voltage VOUT (V)
3.1
IOUT=1mA
Output Voltage VOUT (V)
IOUT = 1mA
3.0 2.9 2.8 2.7
30mA
1.8 1.7 1.6 1.5 1.4
30mA
1.3
50mA
2.6 2.5 2.0
50mA
1.2 1.0
2.0
3.0 4.0 5.0 6.0 Input Voltage VIN (V)
7.0
8.0
3.0
4.0 5.0 6.0 Input Voltage VIN (V)
7.0
8.0
8
R1111N
R1111N401B
Topt = 25C
R1111N501B
Topt = 25C 5.5 5.0
4.5
IOUT = 1mA
4.0
Output Voltage VOUT (V)
Output Voltage VOUT (V)
IOUT = 1mA 4.5 4.0 3.5 30mA 3.0 50mA 2.5 2.0
3.5
30mA
3.0
50mA
2.5 2.0
3.0
4.0 5.0 6.0 Intput Voltage VIN (V)
7.0
8.0
3.0
4.0 5.0 6.0 Intput Voltage VIN (V)
7.0
8.0
3)
Dropout Voltage vs. Output Current R1111N181B
1.20 1.00
Dropout Voltage VDIF (V)
R1111N301B
0.40 0.35
Dropout Voltage VDIF (V)
Topt = 85C
Topt = 85C
0.30
25C
0.80 0.60 0.40
-40C 25C
0.25 0.20
-40C
0.15 0.10 0.05 0.00
0.20 0.00 0 50 100 Output Current IOUT (mA) 150
0
50 100 Output Current IOUT (mA)
150
R1111N401B
0.40 0.35
Dropout Voltage VDIF (V)
R1111N501B
0.40 0.35 0.30
Topt = 85C
Dropout Voltage VDIF (V)
0.30
Topt = 85C
0.25
25C
0.25 0.20 0.15 0.10 0.05 0.00
-40C 25C
0.20 0.15 0.10 0.05 0.00 0 50 100 Output Current IOUT (mA) 150
-40C
0
50 100 Output Current IOUT (mA)
150
9
R1111N
4)
Output Voltage vs. Temperature R1111N181B
1.90 1.88
Output Voltage VOUT (V)
R1111N301B
VIN = 2.8V IOUT = 30mA
3.10 3.08
VIN = 4.0V IOUT = 30mA
1.84 1.82 1.80 1.78 1.76 1.74 1.72 1.70 -50 -25 0 25 50 Temperature Topt 75 100
Output Voltage VOUT (V)
1.86
3.06 3.04 3.02 3.00 2.98 2.96 2.94 2.92 2.90 -50 -25 0 25 50 Temperature Topt 75 100
R1111N401B
4.10 4.08
Output Voltage VOUT (V)
Output Voltage VOUT (V)
R1111N501B
VIN = 5.0V IOUT = 30mA
5.10 5.08 5.06 5.04 5.02 5.00 4.98 4.96 4.94 4.92 VIN = 6.0V IOUT = 30mA
4.06 4.04 4.02 4.00 3.98 3.96 3.94 3.92 3.90 -50 -25 0 25 50 Temperature Topt 75 100
4.90 -50
-25
0 25 50 Temperature Topt
75
100
5)
Supply Current vs. Input Voltage R1111N181B
Topt = 25C
R1111N301B
Topt = 25C 60 50
60 50
Supply Current I ISS
Supply Current I ISS
40 30 20 10 0 1.0
40 30 20 10 0 1.0
2.0
3.0 4.0 5.0 6.0 Input Voltage VIN (V)
7.0
8.0
2.0
3.0 4.0 5.0 6.0 Input Voltage VIN (V)
7.0
8.0
10
R1111N
R1111N401B
Topt = 25C
R1111N501B
Topt = 25C
60 50
60 50
Supply Current ISS
40 30 20 10 0 1.0
Supply Current ISS
2.0 3.0 4.0 5.0 6.0 Intput Voltage VIN (V) 7.0 8.0
40 30 20 10 0 1.0
2.0
3.0 4.0 5.0 6.0 Intput Voltage VIN (V)
7.0
8.0
6)
Supply Current vs. Temperature R1111N181B
VIN = 2.8V
R1111N301B
VIN = 4.0V
50 45
50 45
Supply Current ISS (A)
40 35 30 25 20 -50
Supply Current ISS (A)
0 50 Temperature Topt (C) 100
40 35 30 25 20 -50
0 50 Temperature Topt (C)
100
R1111N401B
VIN = 5.0V
R1111N501B
VIN = 6.0V
50 45
50 45
Supply Current ISS (A)
40 35 30 25 20 -50
Supply Current ISS (A)
0 50 Temperature Topt (C) 100
40 35 30 25 20 -50
0 50 Temperature Topt (C)
100
11
R1111N
7)
Dropout Voltage vs. Set Output Voltage R1111Nxx1B
Topt = 25 1.0 0.9
Dropout Voltage VDIF (V)
0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 1.0
IOUT = 150mA IOUT = 100mA IOUT = 50mA IOUT = 30mA IOUT = 10mA
2.0 3.0 4.0 Set Output Voltage Vreg (V)
5.0
8)
Ripple Rejection vs. Frequency R1111N181B
VIN = 2.8VDC + 0.5Vp-p COUT = tantal 1.0F 80
80 70
Ripple Rejection RR (dB)
R1111N181B
VIN = 2.8VDC + 0.5Vp-p COUT = tantal 2.2F
70
Ripple Rejection RR (dB)
60 50 40 30 20 10 0 0.1 1 10 Frequuency f (kHz) 100 IOUT = 50mA IOUT = 1mA IOUT = 30mA
60 50 40 30 20 10 0 0.1 1 10 100 Frequuency f (kHz) IOUT = 50mA IOUT= 1mA IOUT = 30mA
R1121N301B
VIN = 4VDC + 0.5Vp-p COUT = tantal 1.0F 80
80 70
Ripple Rejection RR (dB)
R1121N301B
VIN = 4VDC + 0.5Vp-p COUT = tantal 2.2F
70
Ripple Rejection RR (dB)
60 50 40 30 20 10 0 0.1 1 10 Frequuency f (kHz) 100 IOUT = 50mA IOUT = 1mA IOUT = 30mA
60 50 40 30 20 10 0 0.1 1 10 100 Frequuency f (kHz) IOUT = 50mA IOUT = 1mA IOUT = 30mA
12
R1111N
R1111N401B
VIN = 5.0VDC + 0.5Vp-p COUT = tantal 1.0F 80
R1111N401B
VIN = 5.0VDC + 0.5Vp-p COUT = tantal 2.2F 80 70
Ripple Rejection RR (dB)
Ripple Rejection RR (dB)
70 60 50 40 30 20 10 0 0.1 1 10 Frequeney f (kHz) 100 IOUT = 50mA IOUT= 1mA IOUT = 30mA
60 50 40 30 20 10 0 0.1 1 10 100 Frequeney f (kHz) IOUT = 50mA IOUT = 1mA IOUT = 30mA
9)
Ripple Rejection vs. Input Voltage (DC bias) R1111N301B
IOUT = 1mA COUT = 2.2F 80
Ripple Rejection RR (dB)
R1111N301B
IOUT = 10mA COUT = 2.2F 80 70
Ripple Rejection RR(dB)
70 60 50 40 30 20 10 0 3.1 3.2 3.3 3.4 Input Voltage VIN (V) 3.5 f = 1kHz f = 10kHz f = 400Hz
60 50 40 30 20 10 0 3.1 3.2 3.3 3.4 Input Voltage VIN (V) 3.5 f = 1kHz f = 10kHz f = 400Hz
R1111N301B
IOUT = 50mA COUT = 2.2F 80 70
f = 400Hz f = 1kHz f = 10kHz
Ripple Rejection RR(dB)
60 50 40 30 20 10 0 3.1
3.2
3.3
3.4
3.5
Input Voltage VIN (V)
13
R1111N
10) Line Transient Response R1111N301B
IOUT=30mA tr=tf=5 s COUT=Tantalum 1.0F 3.4 6
Output Voltage VOUT (V)
Input Voltage 3.2 3.1 Output Voltage 3.0 2.9 2.8 0 20 40 60 Time t (s) 80 100 120 2 1 0 4 3
R1111N301B
IOUT=30mA tr=tf=5 s COUT=Tantalum 2.2F 3.4 6
Output Voltage VOUT (V)
Input Voltage 3.2 3.1 Output Voltage 3.0 2.9 2.8 0 20 40 60 Time t (s) 80 100 120 2 1 0 4 3
R1111N301B
IOUT=30mA tr=tf=5 s COUT=Tantalum 4.7F 3.4 6
Output Voltage VOUT (V)
Input Voltage 3.2 3.1 3.0 2.9 2.8 0 20 40 60 Time t (s) 80 100 120 Output Voltage 2 1 0 4 3
14
Input Voltage VIN (V)
3.3
5
Input Voltage VIN (V)
3.3
5
Input Voltage VIN (V)
3.3
5
R1111N
11) Load Transient Response R1111N301B
VIN=4V CIN=Tantalum 1F COUT=Tantalum 1.0F 3.4 150 100 Output Current 3.2 3.1 Output Voltage 3.0 2.9 2.8 0 2 4 6 8 10 12 Time t (s) 14 16 18 20 50 0
Output Voltage VOUT (V)
3.3
-100 -150
R1111N301B
VIN=4V CIN=Tantalum 1F COUT=Tantalum 2.2F 3.4 150 100 Output Current 3.2 3.1 Output Voltage 3.0 2.9 2.8 0 2 4 6 8 10 12 Time t (s) 14 16 18 20 -50 -100 -150 50 0
Output Voltage VOUT (V)
3.3
R1111N301B
VIN=4V CIN=Tantalum 1F COUT=Tantalum 4.7F 3.4
Output Voltage VOUT (V)
150 100 Output Current 50 0 -50 -100 -150 0 2 4 6 8 10 12 Time t (s) 14 16 18 20
Output Current IOUT (mA)
3.3 3.2 3.1 3.0 2.9 2.8
Output Voltage
Output Current IOUT (mA)
Output
-50
IOUT (mA)
15
R1111N
TECHNICAL NOTES
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3 CE VOUT 5
Ceramic Capacitor Spectrum
R1111N301B 1 VIN
Ceramic Capacitor 1F
VIN
2
GND
ESR IOUT
S.A. Analyzer
Measuring Circuit for white noise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
Ceramic 1.0F 100.0
100.0
R1111N301B
Ceramic 2.2F
ESR ()
10.0
10.0
ESR ()
1.0
1.0
0.1 0 50 100 150 Output Current IOUT (mA)
0.1 0 50 100 Output Current IOUT (mA) 150
16
R1111N
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TYPICAL APPLICATION
CE
CE
IN
VDD
R1111Nxx1A VOUT
OUT
IN
VDD
R1111Nxx1B VOUT
OUT
Cap.
GND
Cap.
Cap.
GND
Cap.
17

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