51B(GRF
LOW NOISE 150mA LDO REGULATOR
51 6(5,(6
NO. EA-059-0204
OUTLINE
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
FEATURES
• 8OWUD/RZ 6XSSO\ &XUUHQW 7\S µ$ • 6WDQGE\ 0RGH &XUUHQW 7\S µ$ • /RZ 'URSRXW 9ROWDJH 7\S 9 ,287 P$ 9 2XWSXW W\SH • +LJK 5LSSOH 5HMHFWLRQ 7\S G% I N+] • /RZ 7HPSHUDWXUH'ULIW &RHIILFLHQW RI 2XWSXW 9ROWDJH 7\S SSP°& • ([FHOOHQW /LQH 5HJXODWLRQ 7\S 9 • +LJK 2XWSXW 9ROWDJH $FFXUDF\ • ([FHOOHQW '\QDPLF 5HVSRQVH • 6PDOO 3DFNDJH 627 0LQLPROG • 2XWSXW 9ROWDJH 6WHSZLVH VHWWLQJ ZLWK D VWHS RI 9 LQ WKH UDQJH RI 9 WR 9 LV SRVVLEOH • %XLOWLQ FKLS HQDEOH FLUFXLW W\SHV $ DFWLYH ORZ % DFWLYH KLJK • 3LQRXW 6LPLODU WR WKH /3/3 • %XLOWLQ IROGEDFN SURWHFWLRQ FLUFXLW 7\S P$ &XUUHQW DW VKRUW PRGH • &HUDPLF FDSDFLWRUV UHFRPPHQGHG WR EH XVHG ZLWK WKLV ,&
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
R1112N
BLOCK DIAGRAM
R1112Nxx1A R1112Nxx1B
1 VDD
5 VOUT
1 VDD
5 VOUT
Vref CE 3 Current Limit GND 2 CE 3
Vref Current Limit GND 2
SELECTION GUIDE
7KH RXWSXW YROWDJH WKH DFWLYH W\SH WKH SDFNLQJ W\SH DQG WKH WDSLQJ W\SH IRU WKH ,&V FDQ EH VHOHFWHG DW WKH XVHU V UHTXHVW 7KH VHOHFWLRQ FDQ EH PDGH E\ GHVLJQDWLQJ WKH SDUW QXPEHU DV VKRZQ EHORZ 5[[[[[[ ↑↑ ↑ ↑ DE F G Code D E 'HVLJQDWLRQ RI 3DFNDJH 7\SH 1 627 0LQLPROG 6HWWLQJ 2XWSXW 9ROWDJH 9287 6WHSZLVH VHWWLQJ ZLWK D VWHS RI 9 LQ WKH UDQJH RI 9 WR 9 LV SRVVLEOH 'HVLJQDWLRQ RI $FWLYH 7\SH F $ DFWLYH ORZ W\SH % DFWLYH KLJK W\SH G 'HVLJQDWLRQ RI 7DSLQJ 7\SH ([ 75 7/ UHIHU WR 7DSLQJ 6SHFLILFDWLRQV 75 W\SH LV WKH VWDQGDUG GLUHFWLRQ Contents ←3DUW 1XPEHU
2
R1112N
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
Symbol 9,1 9&( 9287 ,287 3' 7RSW 7VWJ ,QSXW 9ROWDJH ,QSXW 9ROWDJH RU &( 3LQ 2XWSXW 9ROWDJH 2XWSXW &XUUHQW 3RZHU 'LVVLSDWLRQ 2SHUDWLQJ 7HPSHUDWXUH 5DQJH 6WRUDJH 7HPSHUDWXUH 5DQJH Item Rating a 9,1 a 9,1 a a Unit 9 9 9 P$ P: °& °&
3
R1112N
ELECTRICAL CHARACTERISTICS
• R1112Nxx1A Symbol 9287 ,287 Item 2XWSXW 9ROWDJH 2XWSXW &XUUHQW 9,1 Conditions 6HW 9287 9 9 P$ ≤ ,287 ≤ P$ 9,1 9287 9,1 Min. 9287 × Typ. Max. 9287 × 7RSW °& Unit 9 P$ P9
∆9287∆,287 /RDG 5HJXODWLRQ 9',) ,66 ,VWDQGE\ ∆9287∆9,1 55 9,1 ∆9287∆7 ,OLP 538 9&(+ 9&(/ HQ 'URSRXW 9ROWDJH 6XSSO\ &XUUHQW 6XSSO\ &XUUHQW 6WDQGE\ /LQH 5HJXODWLRQ 5LSSOH 5HMHFWLRQ ,QSXW 9ROWDJH 2XWSXW 9ROWDJH 7HPSHUDWXUH &RHIILFLHQW 6KRUW &XUUHQW /LPLW
3XOOXS 5HVLVWDQFH ,QSXW 9ROWDJH ´+µ
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 %: +] WR N+] °& ≤ 7RSW ≤ °& 6HW 9287 9
5HIHU WR WKH (/(&75,&$/ &+$5$&7(5,67,&6 E\ 287387 9,1 µ$ µ$ 9 G% 9 SSP °& P$ 0Ω 9 9 µ9UPV
6HW 9287 9 ≤ 9,1 ≤ 9
µ ,QSXW 9ROWDJH ´/ 2XWSXW 1RLVH
4
R1112N
• R1112Nxx1B Symbol 9287 ,287 Item 2XWSXW 9ROWDJH 2XWSXW &XUUHQW 9,1 Conditions 6HW 9287 9 9 P$ ≤ ,287 ≤ P$ 9,1 9287 9,1 Min. 9287 × Typ. Max. 9287 ×
7RSW °& Unit 9 P$ P9
∆9287∆,287 /RDG 5HJXODWLRQ 9',) ,66 ,VWDQGE\ ∆9287∆9,1 55 9,1 ∆9287∆7 ,OLP 53' 9&(+ 9&(/ HQ 'URSRXW 9ROWDJH 6XSSO\ &XUUHQW 6XSSO\ &XUUHQW 6WDQGE\ /LQH 5HJXODWLRQ 5LSSOH 5HMHFWLRQ ,QSXW 9ROWDJH 2XWSXW 9ROWDJH 7HPSHUDWXUH &RHIILFLHQW 6KRUW &XUUHQW /LPLW &( 3XOOGRZQ 5HVLVWDQFH &( ,QSXW 9ROWDJH ´+µ &( ,QSXW 9ROWDJH ´/ µ 2XWSXW 1RLVH
6HW 9287 9
P$ ≤ ,287 ≤ P$ 92/7$*( 9,1 9,1 6HW 9287 9 6HW 9287 9
5HIHU WR WKH (/(&75,&$/ &+$5$&7(5,67,&6 E\ 287387 ,287 9287 P$ 9 %: +] WR N+] °& ≤ 7RS W ≤ °& 9,1 µ$ µ$ 9 G% 9 SSP °& P$ 0Ω 9 9 µ9UPV
9&( *1' 6HW 9287 9 ≤ 9,1 ≤ 9 ,287 I 9,1 P$ N+] 5LSSOH 9SS 6HW 9287 9
• ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE 7RSW Dropout Voltage Output Voltage VOUT (V) Condition ≤ 9287 ≤ ≤ 9287 ≤ ≤ 9287 ≤ ≤ 9287 ≤ ≤ 9287 ≤ ,287 P$ VDIF (V) Typ. Max. °&
5
R1112N
OPERATION
R1112Nxx1A R1112Nxx1B
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
,Q WKHVH ,&V IOXFWXDWLRQ RI WKH RXWSXW YROWDJH 9287 LV GHWHFWHG E\ IHHGEDFN UHJLVWHUV 5 5 DQG WKH UHVXOW LV FRPSDUHG ZLWK D UHIHUHQFH YROWDJH E\ WKH HUURU DPSOLILHU VR WKDW D FRQVWDQW YROWDJH LV RXWSXW $ FXUUHQW OLPLW FLUFXLW IRU SURWHFWLRQ LQ VKRUW PRGH DQG D FKLS HQDEOH FLUFXLW DUH LQFOXGHG
TECHNICAL NOTES
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µ) RU PRUH EHWZHHQ 9'' DQG *1' SLQ DV FORVH DV SRVVLEOH 6HW H[WHUQDO FRPSRQHQWV HVSHFLDOO\ RXWSXW FDSDFLWRU DV FORVH DV SRVVLEOH WR WKH ,&V DQG PDNH ZLULQJ DV VKRUW DV SRVVLEOH
6
R1112N
TEST CIRCUITS
CE 3 3 CE
IN
VDD 1
VOUT R1112Nxx1B Series 5
OUT IOUT
IN ISS
VDD 1
VOUT R1112Nxx1B Series 5
OUT
2 2.2µF GND 2.2µF
2 GND
Fig.1 Standard test Circuit
CE 3
Fig.2 Supply Current Test Circuit
CE 3
IN
VDD 1
VOUT R1112Nxx1B Series 5
OUT IOUT
IN
VDD 1
VOUT R1112Nxx1B Series 5
OUT
P.G
2 GND 2.2µF
2 GND I1 I2
Fig.3 Ripple Rejection, Line Transient Response Test Circuit
Fig.4 Load Transient Response Test Circuit
7
R1112N
TYPICAL APPLICATION
CE CE
IN
VDD R1112Nxx1A Series GND
VOUT
OUT
IN
VDD
R1112Nxx1B VOUT Series GND Cap.
OUT
Cap.
Cap.
Cap.
([WHUQDO &RPSRQHQWV 2XWSXW &DSDFLWRU &HUDPLF µ) 6HW 2XWSXW 9ROWDJH LQ WKH UDQJH IURP WR 9 &HUDPLF µ) 6HW 2XWSXW 9ROWDJH LQ WKH UDQJH IURP WR 9 ,QSXW &DSDFLWRU &HUDPLF µ)
8
R1112N
TYPICAL CHARACTERISTICS
1) Output Voltage vs. Output Current R11x2N151B
1.8 1.6
Output Voltage VOUT(V)
R11x2N201B
2.5 2
VIN=2.3V
Output Voltage VOUT(V)
1.4 1.2 1 0.8 0.6 0.4 0.2 0 0 100 200 300 400 500 Output Current IOUT(mA)
VIN=2.0V VIN=2.5V VIN=3.5V
1.5 1 0.5 0 0
VIN=2.5V VIN=3.0V VIN=4.0V
100
200
300
400
500
Output Current IOUT(mA)
R11x2N301B
3.5
Output Voltage VOUT(V)
R11x2N401B
5
3
Output Voltage VOUT(V)
4
VIN=4.3V
2.5
VIN=3.3V
2 1.5 1 0.5 0 0
VIN=3.5V VIN=4.0V VIN=5.0V
3 2 1 0
VIN=4.5V VIN=5.0V VIN=6.0V
100
200
300
400
500
0
100
200
300
400
500
Output Current IOUT(mA)
Output Current IOUT(mA)
R11x2N501B
6
Output Voltage VOUT(V)
5 4 3 2 1 0 0 100 200 300 400 500 Output Current IOUT(mA)
VIN=5.3V VIN=5.5V VIN=6.0V VIN=7.0V
9
R1112N
2)
Output Voltage vs. Input Voltage R11x2N151B
1.600
Output Voltage VOUT(V)
R11x2N201B
2.100
Output Voltage VOUT(V)
1.500 1.400 1.300 1.200 1.100 1.000 1 2 3 4 5 6 7 Input Voltage VIN(V)
IOUT=1mA IOUT=30mA IOUT=50mA
2.000 1.900 1.800 1.700 1.600 1.500 1 2 3 4 5 6 7 Input Voltage VIN(V)
IOUT=1mA IOUT=30mA IOUT=50mA
R11x2N301B
3.100 4.500 3.000 2.900 2.800 2.700 2.600 2.500 2 3 4 5 6 7 Input Voltage VIN(V)
IOUT=1mA IOUT=30mA IOUT=50mA
R11x2N401B
Output Voltage VOUT(V)
Output Voltage VOUT(V)
4.000
3.500
3.000
IOUT=1mA IOUT=30mA IOUT=50mA
2.500 2 3 4 5 6 7 Input Voltage VIN(V)
R11x2N501B
5.500 5.000 4.500 4.000 3.500 3.000 2.500 2 3 4 5 6 7 Input Voltage VIN(V)
IOUT=1mA IOUT=30mA IOUT=50mA
10
Output Voltage VOUT(V)
R1112N
3)
Dropout Voltage vs. Output Current R11x2N151B
0.600
Dropout Voltage VDIF(V)
R11x2N201B
0.600 0.500 0.400 0.300 0.200 0.100 0.000
Topt=-40°C Topt=25°C Topt=85°C
0.400 0.300 0.200 0.100 0.000 0
50
100
150
Dropout Voltage VDIF(V)
0.500
Topt=-40°C Topt=25°C Topt=85°C
0
50
100
150
Output Current IOUT(mA)
Output Current IOUT(mA)
R11x2N301B
0.600
Dropout Voltage VDIF(V)
R11x2N401B
0.600 0.500 0.400 0.300 0.200 0.100 0.000
Topt=-40°C Topt=25°C Topt=85°C
0.400 0.300 0.200 0.100 0.000 0
50
100
150
Dropout Voltage VDIF(V)
0.500
Topt=-40°C Topt=25°C Topt=85°C
0
50
100
150
Output Current IOUT(mA)
Output Current IOUT(mA)
R11x2N501B
0.600 0.500 0.400 0.300 0.200 0.100 0.000 0 50 100 150 Output Current IOUT(mA)
Topt=-40°C Topt=25°C Topt=85°C
Dropout Voltage VDIF(V)
11
R1112N
4)
Output Voltage vs. Temperature R11x2N151A/B
1.53 1.52
Output VoltageVOUT(V)
R11x2N201B
2.10 2.08 2.06 2.04 2.02 2.00 1.98 1.96 1.94 1.92 1.90 VIN=3.0V CIN=1µF COUT=2.2µF IOUT=30mA
VIN=2.5V CIN=1µF COUT=2.2µF IOUT=30mA
Output VoltageVOUT(V)
1.51 1.50 1.49 1.48 1.47 -50 -25 50 Temperature Topt (°C) 0 25 75 100
-50
-25
0 25 50 Temperature Topt (°C)
75
100
R11x2N301A/B
3.06 3.04 3.02 3.00 2.98 2.96 2.94 -50 -25 50 Temperature Topt (°C) 0 25 75 100 VIN=4.0V CIN=1µF COUT=2.2µF IOUT=30mA 4.08 4.06
Output VoltageVOUT(V)
R11x2N401A/B
VIN=5.0V CIN=1µF COUT=2.2µF IOUT=30mA
Output VoltageVOUT(V)
4.04 4.02 4.00 3.98 3.96 3.94 3.92 -50 -25 0 25 50 Temperature Topt (°C) 75 100
R11x2N501A/B
5.10 5.08 5.06 5.04 5.02 5.00 4.98 4.96 4.94 4.92 4.90 -50 -25 0 25 50 Temperature Topt (°C) 75 100 VIN=6.0V CIN=1µF COUT=2.2µF IOUT=30mA
12
Output VoltageVOUT(V)
R1112N
5)
Supply Current vs. Input Voltage R11x2N151B
120 120
R11x2N201B
Supply Current ISS (µA)
100 80 60 40 20 0
Supply Current ISS (µA)
100 80 60 40 20 0 1 2 3 4 5 Input Voltage VIN (V) 6 7
1
2
3 4 5 Input Voltage VIN (V)
6
7
R11x2N301B
120 120
R11x2N401B
Supply Current ISS (µA)
100 80 60 40 20 0
Supply Current ISS (µA)
100 80 60 40 20 0 1 2 3 4 5 Input Voltage VIN (V) 6 7
1
2
3 4 5 Input Voltage VIN (V)
6
7
R11x2N501B
120
Supply Current ISS (µA)
100 80 60 40 20 0 1 2 3 4 5 Input Voltage VIN (V) 6 7
13
R1112N
6)
Supply Current vs. Temperature R11x2N151A/B
200 VIN=2.5V CIN=1µF COUT=2.2µF 200
R11x2N201A/B
VIN=3.0V CIN=1µF COUT=2.2µF
Supply Current ISS (µA)
150
Supply Current ISS (µA)
-25 50 75 0 25 Temperature Topt (°C) 100
150
100
100
50
50
0 -50
0 -50
-25
0 25 50 75 Temperature Topt (°C)
100
R11x2N301A/B
200 VIN=4.0V CIN=1µF COUT=2.2µF 200
R11x2N401A/B
VIN=5.0V CIN=1µF COUT=2.2µF
Supply Current ISS (µA)
150
Supply Current ISS (µA)
50 75 0 25 Temperature Topt (°C) 100
150
100
100
50
50
0 -50
-25
0 -50
-25
50 75 0 25 Temperature Topt (°C)
100
R11x2N501A/B
200 VIN=6.0V CIN=1µF COUT=2.2µF
Supply Current ISS (µA)
150
100
50
0 -50
-25
50 75 0 25 Temperature Topt (°C)
100
14
R1112N
7)
Ripple Rejection vs. Frequency R11x2N151A/B
90.00
Ripple Rejection RR (dB)
R11x2N201A/B
90.00
Ripple Rejection RR (dB)
VIN=2.5V+0.5Vp-p COUT=2.2µF IOUT=30mA
VIN=3.0V+0.5Vp-p COUT=2.2µF IOUT=30mA
80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 0.1 1 10 Frequency Freq (kHz) 100
80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 0.1 1 10 Frequency Freq (kHz) 100
R11x2N301A/B
90.00
Ripple Rejection RR (dB)
R11x2N401A/B
90.00
Ripple Rejection RR (dB)
VIN=4.0V+0.5Vp-p COUT=2.2µF IOUT=30mA
VIN=5.0V+0.5Vp-p COUT=2.2µF IOUT=30mA
80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 0.1 1 10 Frequency Freq (kHz) 100
80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 0.1 1 10 Frequency Freq (kHz) 100
R11x2N501A/B
90.00
Ripple Rejection RR (dB)
VIN=6.0V+0.5Vp-p COUT=2.2µF IOUT=30mA
80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 0.1 1 10 Frequency Freq (kHz) 100
15
R1112N
8)
Ripple Rejection vs. Input Voltage (DC bias) R11x2N301B
90.00 COUT=Ceramic 2.2µF IOUT=1mA 90.00
R11x2N301B
COUT=Ceramic 2.2µF IOUT=10mA
Ripple Rejection RR (dB)
80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 3.10
f=400Hz f=1kHz f=10kHz
Ripple Rejection RR (dB)
80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 3.10
f=400Hz f=1kHz f=10kHz
3.20 3.30 3.40 Input Voltage VIN (V)
3.50
3.20 3.30 3.40 Input Voltage VIN (V)
3.50
R11x2N301B
90.00 COUT=Ceramic 2.2µF IOUT=50mA
Ripple Rejection RR (dB)
80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 3.10
f=400Hz f=1kHz f=10kHz
3.20 3.30 3.40 Input Voltage VIN (V)
3.50
9)
Input Transient Response R11x2N151B
Tek Run : 2.50MS/s Average
7RSW °&
VIN 1→
2→
VOUT
9,1 9↔9 ,287 P$ &,1 QRQH &287 µ)
Ch1 Ch1
1.00V
Ch2 20.0mV
M20.0µs
WUWI µV
16
R1112N
R11x2N201B
Tek Run : 2.50MS/s Average
7RSW °&
VIN 1→
2→
VOUT
9,1 9↔9 ,287 P$ &,1 QRQH &287 µ)
Ch1
1.00V
Ch2 20.0mV
M20.0µs
WUWI µV 7RSW °&
R11x2N301B
Tek Run : 2.50MS/s Average
VIN 1→
2→
VOUT
9,1 9↔9 ,287 P$ &,1 QRQH &287 µ)
Ch1
1.00V
Ch2 20.0mV
M20.0µs
WUWI µV 7RSW °&
R11x2N401B
Tek Run : 2.50MS/s Average
VIN 1→
2→
VOUT
9,1 9↔9 ,287 P$ &,1 QRQH &287 µ)
M20.0µs
Ch1
1.00V
Ch2 20.0mV
WUWI µV
17
R1112N
R11x2N501B
Tek Run : 2.50MS/s Average
7RSW °&
VIN 1→
2→
VOUT
9,1 9↔9 ,287 P$ &,1 QRQH &287 µ)
Ch1
1.00V
Ch2 20.0mV
M20.0µs
WUWI µV
10) Load Transient Response R11x2N151B
Tek Run : 2.50MS/s Average
7RSW °&
1→
IOUT
VOUT 2→
,287 P$↔P$ 9,1 9 &,1 µ) &287 µ)
M20.0µs
Ch1 500mV
Ch2 50.0mV
WUWI µV 7RSW °&
R11x2N201B
Tek Run : 2.50MS/s Average
1→
IOUT
VOUT 2→
,287 P$↔P$ 9,1 9 &,1 µ) &287 µ)
Ch1 500mV
Ch2 50.0mV
M20.0µs
WUWI µV
18
R1112N
R11x2N301B
Tek Run : 2.50MS/s Average
7RSW °&
1→
IOUT
VOUT 2→
,287 P$↔P$ 9,1 9 &,1 µ) &287 µ)
M20.0µs
Ch1 500mV
Ch2 50.0mV
WUWI µV 7RSW °&
R11x2N401B
Tek Run : 2.50MS/s Average
1→
IOUT
VOUT 2→
,287 P$↔P$ 9,1 9 &,1 µ) &287 µ)
Ch1 500mV
Ch2 50.0mV
M20.0µs
WUWI µV 7RSW °&
R11x2N501B
Tek Run : 2.50MS/s Average
1→
IOUT
,287 P$↔P$
VOUT 2→
9,1 9 &,1 µ) &287 µ) WUWI µV
Ch1 500mV
Ch2 50.0mV
M20.0µs
19
R1112N
TECHNICAL NOTES
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3 CE VOUT1 5
Ceramic Cap.
R1112Nxx1B 1 VIN 2 GND
ESR IOUT
S.A
Spectrum Analyzer
VIN
Ceramic Cap.
Measuring Circuit for white noise; R1112Nxx1B 7KH UHODWLRQVKLS EHWZHHQ ,287 WKH RXWSXW FXUUHQW DQG (65 RI WKH RXWSXW FDSDFLWRU LV VKRZQ LQ WKH JUDSKV EHORZ 7KH FRQGLWLRQV ZKHQ WKH ZKLWH QRLVH OHYHO LV XQGHU µ9 $YJ DUH LQGLFDWHG E\ WKH KDWFKHG DUHD LQ WKH JUDSK 1RWH :KHQ DGGLWLRQDO FHUDPLF FDSDFLWRUV DUH FRQQHFWHG WR WKH RXWSXW SLQ ZLWK WKH RXWSXW FDSDFLWRU IRU SKDVH FRPSHQ VDWLRQ RSHUDWLRQ PLJKW EH XQVWDEOH %HFDXVH RI WKLV WHVW WKHVH ,&V ZLWK WKH VDPH H[WHUQDO FRPSRQHQWV DV WKH RQHV WR EH XVHG RQ WKH 3&% 0HDVXULQJ &RQGLWLRQV! 9,1 9287 9 )UHTXHQF\ EDQG +] WR 0+] 7HPSHUDWXUH °& R11x2N151B
COUT=2.2µF,CIN=2.2µF 100 100
R11x2N151B
COUT=4.7µF,CIN=2.2µF
10
ESR (Ω) ESR (Ω)
10
1
1
0.1
0.1
0.01 0 30 90 60 IOUT (mA) 120 150
0.01 0 30 90 60 IOUT (mA) 120 150
20
R1112N
R11x2N301B
COUT=2.2µF,CIN=2.2µF 100 100
R11x2N301B
COUT=4.7µF,CIN=2.2µF
10
ESR (Ω)
10
1
ESR (Ω)
0 30 90 60 IOUT (mA) 120 150
1
0.1
0.1
0.01
0.01 0 30 90 60 IOUT (mA) 120 150
21