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R1126N SERIES
LOW NOISE 150mA LDO REGULATOR
NO. EA-130-0512
OUTLINE
The R1126N 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 short current limit circuit, a chip enable circuit, and so on. These ICs perform with low dropout voltage and the chip-enable function. The supply current at no load of this IC is only 10A, and the line transient response and the load transient response of the R1126N Series are excellent, thus these ICs are very suitable for the power supply for hand-held communication equipment. The supply current at no load of R1126x Series is remarkably reduced compared with R1114x Series. The mode change signal to reduce the supply current is not necessary. The output voltage accuracy is also improved. (1.5%) The output voltage of these ICs is fixed with high accuracy. Since the package for these ICs is SOT-23-5 therefore high density mounting of the ICs on boards is possible. R1116N Series that a pin configuration differs from R1126N Series are available.
FEATURES
* * * * * * * * * * * * Low Supply Current ............................................................. Typ. 10A Standby Current ................................................................... Typ. 0.1A Input Voltage Range ............................................................ 1.8V to 6.0V Output Voltage Range.......................................................... 1.5V to 4.0V Low Dropout Voltage............................................................ Typ. 0.29V (IOUT=150mA,VOUT=2.8V) High Ripple Rejection .......................................................... Typ. 70dB (f=1kHz, VOUT=3.0V) Typ. 53dB (f=10kHz) High Output Voltage Accuracy ............................................. 1.5% (1.5V < VOUT < 3.0V), 2.0% (VOUT>3.0V) = = Low Temperature-Drift Coefficient of Output Voltage........... Typ. 100ppm/C Excellent Line Regulation .................................................... Typ. 0.02%/V Small 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=1.0F (Ceramic)
APPLICATIONS
* * * * Power source for portable communication equipment. Power source for portable music player. Power source for electrical appliances such as cameras, VCRs and camcorders. Power source for battery-powered equipment.
1
R1126N
BLOCK DIAGRAMS
R1126Nxx1B
VDD VOUT VDD
R1126Nxx1D
VOUT
Vref Current Limit
Vref Current Limit
CE
GND
CE
GND
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;
R1126Nxx1x-xx
ab Code a b cd
Part Number
Contents Designation of Package Type: N: SOT-23-5 Setting Output Voltage (VOUT): Stepwise setting with a step of 0.1V in the range of 1.5V to 4.0V is possible. Exceptions:2.85V=R1126N281x5, 1.85V=R1126N181x5 Designation of Active 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 d
2
R1126N
PIN CONFIGURATION
SOT-23-5
5 4
(mark side)
1
2
3
PIN DESCRIPTION
*
R1126N
Pin No. 1 2 3 4 5 Symbol CE GND NC VOUT VDD Chip Enable Pin Ground Pin No Connection Output pin Input Pin Description
ABSOLUTE MAXIMUM RATINGS
Symbol VIN VCE VOUT IOUT PD Topt Tstg
Item Input Voltage Input Voltage (CE Pin) Output Voltage Output Current Power Dissipation (SOT-23-5) Storage Temperature Range
Rating 6.5 6.5 -0.3~VIN+0.3 160 420 -40~85 -55~125
Unit V V V mA mW C C
Operating Temperature Range
) For Power Dissipation, please refer to PACKAGE INFORMATION to be described.
3
R1126N
ELECTRICAL CHARACTERISTICS
*
R1126Nxx1B/D
Topt=25C
Symbol VOUT IOUT VOUT/ IOUT
Item Output Voltage Output Current
Conditions VIN = Set VOUT+1V 1mA < IOUT < 30mA = = VIN-VOUT=1.0V VOUT
< =
Min. 3.0V x0.985 x0.980 150
Typ.
Max. x1.015 x1.020
Unit V mA
VOUT > 3.0V
Load Regulation
VDIF ISS Istandby VOUT/ VIN RR VIN VOUT/ Topt Ilim IPD VCEH VCEL en RLOW
Dropout Voltage Supply Current Supply Current (Standby) Line Regulation
VIN=Set VOUT+1V 1mA < IOUT < 150mA = = 28 55 1.5V < VOUT < 2.0V = 33 66 2.0V < VOUT < 3.0V = 35 80 3.0V < VOUT = Refer to the ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE VIN=Set VOUT+1V, IOUT=0mA VIN=Set VOUT+1V, VCE=VDD IOUT=30mA Set VOUT+0.5V
< =
mV
10 0.1 0.02 70 53
18 1.0 0.10
A A %/V
VIN
< =
6.0V
Ripple Rejection Input Voltage Output Voltage Temperature Coefficient Short Current Limit CE Pull-down Current CE Input Voltage "H" CE Input Voltage "L" Output Noise On Resistance of Nch Tr. for auto-discharge (Only for D version)
f=1kHz f=10kHz Ripple 0.2Vp-p VIN-VOUT=1.0V,IOUT=30mA 1.8 IOUT=30mA -40C < Topt = VOUT=0V 1.0 0.0 BW=10Hz to 100kHz VCE=0V
< =
dB 6.0 V ppm /C mA A 6.0 0.3 V V Vrms
85C
100 40 0.5
30 70
4
R1126N
*
ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
Topt = 25C
Output Voltage VOUT (V) VOUT = 1.5V 1.5V < VOUT 1.6V < VOUT 1.7V < VOUT 2.0V < VOUT 2.7V < VOUT
< = < = < = < = < =
Dropout Voltage VDIF (V) Condition Typ. 0.54 0.50 IOUT=150mA 0.46 0.44 0.37 0.29 Max. 0.86 0.75 0.70 0.65 0.56 0.46
1.6V 1.7V 2.0V 2.7V 4.0V
TYPICAL APPLICATIONS
VDD C1
VOUT C2
R1126N Series CE GND
(External Components) C2 Ceramic 1.0F Ex. Murata GRM155B30J105KE18B Kyocera CM05X5R105K06AB C1 Ceramic 1.0F
5
R1126N
TEST CIRCUITS
VDD C1
VOUT C2 V VOUT IOUT
R1126N Series CE GND
C1=Ceramic 1.0F C2=Ceramic 1.0F
Fig.1 Standard test Circuit
VDD A ISS C1
VOUT C2
R1126N Series CE GND
C1=Ceramic 1.0F C2=Ceramic 1.0F
Fig.2 Supply Current Test Circuit
VDD Pulse Generator
VOUT C2
R1126N Series CE GND
IOUT
C2=Ceramic 1.0F
Fig.3 Ripple Rejection, Line Transient Response Test Circuit
6
R1126N
TYPICAL CHARACTERISTICS
1) Output Voltage vs. Output Current (Topt=25C)
R1126N151x
1.6 3.0 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 0 100 200 300 400 Output Current IOUT(mA) 500 VIN=1.8V VIN=2.0V VIN=2.5V VIN=3.5V
R1126N281x
Output Voltage VOUT(V)
Output Voltage VOUT(V)
2.5 2.0 1.5 1.0 0.5 0 0 100 200 300 400 Output Current IOUT(mA) 500 VIN=3.1V VIN=3.5V VIN=3.8V
R1126N401x
4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 0 100 200 300 400 Output Current IOUT(mA) 500 VIN=4.3V VIN=4.5V VIN=5.0V
2) Output Voltage vs. Input Voltage (Topt=25C)
R1126N151x
1.6 3.0 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 0 1 2 3 4 Input Voltage VIN(V) 5 6 IOUT=1mA IOUT=30mA IOUT=50mA IOUT=150mA
Output Voltage VOUT(V)
R1126N281x
Output Voltage VOUT(V)
Output Voltage VOUT(V)
2.5 2.0 1.5 1.0 0.5 0 0 1 2 3 4 Input Voltage VIN(V) 5 6 IOUT=1mA IOUT=30mA IOUT=50mA IOUT=150mA
7
R1126N
R1126N401x
5.0
Output Voltage VOUT(V)
4.0 3.0 2.0 1.0 0 0 1 2 3 4 Input Voltage VIN(V) 5 6 IOUT=1mA IOUT=30mA IOUT=50mA IOUT=150mA
3) Supply Current vs. Input Voltage (Topt=25C)
R1126N151x
10 20
R1126N281x
Supply Current ISS(A)
8
Supply Current ISS(A)
15
5
10
3
5
0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 Input Voltage VIN(V)
0 2.8
3.6 4.4 5.2 Input Voltage VIN(V)
6.0
R1126N401x
25
Supply Current ISS(A)
20 15 10 5 0 4.0
4.5 5.0 5.5 Input Voltage VIN(V)
6.0
8
R1126N
4) Output Voltage vs. Temperature
R1126N151x
1.53 2.83 1.52 1.51 1.50 1.49 1.48 1.47 1.46 -50 -25 0 25 50 75 Temperature Topt(C) 100 2.82 2.81 2.80 2.79 2.78 2.77 2.76 -50 -25 0 25 50 75 Temperature Topt(C) 100
R1126N281x
Output Voltage VOUT(V)
R1126N401x
4.06 4.04 4.02 4.00 3.98 3.96 3.94 3.92 -50 -25 0 25 50 75 Temperature Topt(C) 100
5) Supply Current vs. Temperature
R1126N151x
16 16 14 12 10 8 6 4 2 0 -50 -25 0 25 50 75 Temperature Topt(C) 100 14 12 10 8 6 4 2 0 -50 -25 0 25 50 75 Temperature Topt(C) 100
Output Voltage VOUT(V)
Output Voltage VOUT(V)
R1126N281x
Supply Current ISS(A)
Supply Current ISS(A)
9
R1126N
R1126N401x
16 14 12 10 8 6 4 2 0 -50 -25 0 25 50 75 Temperature Topt(C) 100
6) Dropout Voltage vs. Temperature
R1126N151x
700
Dropout Voltage VDIF(mV)
Supply Current ISS(A)
R1126N161x
700
Dropout Voltage VDIF(mV)
600 500 400 300 200 100 0 0 25 50 75 100 125 Output Current IOUT(mA) 150 85C 25C -40C
600 500 400 300 200 100 0 0 25 50 75 100 125 Output Current IOUT(mA) 150 85C 25C -40C
R1126N171x
600
Dropout Voltage VDIF(mV)
R1126N181x
600
Dropout Voltage VDIF(mV)
500 400 300 200 100 0 0 25 50 75 100 125 Output Current IOUT(mA) 150 85C 25C -40C
500 400 300 200 100 0 0 25 50 75 100 125 Output Current IOUT(mA) 150 85C 25C -40C
10
R1126N
R1126N211x
500
Dropout Voltage VDIF(mV)
R1126N281x
400
Dropout Voltage VDIF(mV)
350 300 250 200 150 100 50 0 0 85C 25C -40C 25 50 75 100 125 Output Current IOUT(mA) 150
400 300 200 100 0 0 25 50 75 100 125 Output Current IOUT(mA) 150 85C 25C -40C
R1126N401x
300
Dropout Voltage VDIF(mV)
250 200 150 100 50 0 0 25 50 75 100 125 Output Current IOUT(mA) 150 85C 25C -40C
7) Dropout Voltage vs. Set Output Voltage (Topt=25C)
700
Dropout Voltage VDIF(mV)
600 500 400 300 200 100 0 1
150mA 100mA 50mA 30mA 10mA
2 3 Set Output Voltage VREG(V)
4
11
R1126N
8) Ripple Rejection vs. Input Bias Voltage (Topt=25C, CIN = none, COUT = 1F)
R1126N281x
Ripple Vp-p=0.2V, IOUT=1mA 80
Ripple Rejection RR(dB) Ripple Rejection RR(dB)
R1126N281x
Ripple Vp-p=0.5V, IOUT=1mA 80 70 60 50 40 30 20 10 0 2.9 3.0 1kHz 10kHz 100kHz 3.1 3.2 3.3 3.4 Input Voltage VIN(V) 3.5
70 60 50 40 30 20 10 0 2.9 3.0 1kHz 10kHz 100kHz 3.1 3.2 3.3 3.4 Input Voltage VIN(V) 3.5
R1126N281x
Ripple Vp-p=0.2V, IOUT=30mA 80
Ripple Rejection RR(dB) Ripple Rejection RR(dB)
R1126N281x
Ripple Vp-p=0.5V, IOUT=30mA 80 70 60 50 40 30 20 10 0 2.9 3.0 1kHz 10kHz 100kHz 3.1 3.2 3.3 3.4 Input Voltage VIN(V) 3.5
70 60 50 40 30 20 10 0 2.9 3.0 1kHz 10kHz 100kHz 3.1 3.2 3.3 3.4 Input Voltage VIN(V) 3.5
R1126N281x
Ripple Vp-p=0.2V, IOUT=50mA 80
Ripple Rejection RR(dB) Ripple Rejection RR(dB)
R1126N281x
Ripple Vp-p=0.5V, IOUT=50mA 80 70 60 50 40 30 20 10 0 2.9 3.0 1kHz 10kHz 100kHz 3.1 3.2 3.3 3.4 Input Voltage VIN(V) 3.5
70 60 50 40 30 20 10 0 2.9 3.0 1kHz 10kHz 100kHz 3.1 3.2 3.3 3.4 Input Voltage VIN(V) 3.5
12
R1126N
9) Ripple Rejection vs. Frequency (CIN=none)
R1126N151x
VIN=2.7VDC+0.5Vp-p,COUT=1F 90
Ripple Rejection RR(dB)
R1126N151x
VIN=2.7VDC+0.5Vp-p,COUT=2.2F 90
Ripple Rejection RR(dB)
80 70 60 50 40 30 20 10 0 0.1 IOUT=1mA IOUT=30mA IOUT=50mA IOUT=150mA 1 10 Frequency f(kHz) 100
80 70 60 50 40 30 20 10 0 0.1 IOUT=1mA IOUT=30mA IOUT=50mA IOUT=150mA 1 10 Frequency f(kHz) 100
R1126N281x
VIN=3.8VDC+0.5Vp-p,COUT=1F 90
Ripple Rejection RR(dB)
R1126N281x
VIN=3.8VDC+0.5Vp-p,COUT=2.2F 90
Ripple Rejection RR(dB)
80 70 60 50 40 30 20 10 0 0.1 IOUT=1mA IOUT=30mA IOUT=50mA IOUT=150mA 1 10 Frequency f(kHz) 100
80 70 60 50 40 30 20 10 0 0.1 IOUT=1mA IOUT=30mA IOUT=50mA IOUT=150mA 1 10 Frequency f(kHz) 100
R1126N401x
VIN=5VDC+0.5Vp-p,COUT=1F 90
Ripple Rejection RR(dB)
R1126N401x
VIN=5VDC+0.5Vp-p,COUT=2.2F 90
Ripple Rejection RR(dB)
80 70 60 50 40 30 20 10 0 0.1 IOUT=1mA IOUT=30mA IOUT=50mA IOUT=150mA 1 10 Frequency f(kHz) 100
80 70 60 50 40 30 20 10 0 0.1 IOUT=1mA IOUT=30mA IOUT=50mA IOUT=150mA 1 10 Frequency f(kHz) 100
13
R1126N
10) Input Transient Response (IOUT=30mA, CIN= none, tr=tf=5s, COUT = Ceramic 1F)
R1126N151x
1.55 4 2.85 1.54 1.53 1.52 1.51 1.50 1.49 1.48 0 10 20 30 40 50 60 70 80 90 100 Time t(s) Output Voltage 3 2.84 2.83 2.82 2.81 Output Voltage 2.80 2.79 2.78 0 10 20 30 40 50 60 70 80 90 100 Time t(s) 1 0 Input Voltage
R1126N281x
6 5 4 3 2
Output Voltage VOUT(V)
Input Voltage VIN(V)
2 1 0
R1126N401x
4.05 7 6 Input Voltage 5 4 3 Output Voltage 4.00 3.99 3.98 2 1 0 0 10 20 30 40 50 60 70 80 90 100 Time t(s) 4.04 4.03 4.02 4.01
Output Voltage VOUT(V)
11) Load Transient Response (tr=tf=0.5s, CIN=Ceramic 1F)
R1126N151x
VIN=2.5V,COUT=Ceramic 1.0F 1.9 60 1.9
Input Voltage VIN(V)
R1126N151x
VIN=2.5V,COUT=Ceramic 2.2F 60 30 0 Output Current 0mA30mA 1.6 1.5 1.4 1.3 Output Voltage
Output Current IOUT(mA)
1.8 1.7
30 0
1.8 1.7
Output Current 0mA30mA
1.6 1.5 1.4 1.3 0 10 20 30 40 50 60 70 80 90 100 Time t(s) Output Voltage
0 10 20 30 40 50 60 70 80 90 100 Time t(s)
14
Output Current IOUT(mA)
Output Voltage VOUT(V)
Output Voltage VOUT(V)
Input Voltage VIN(V)
Input Voltage
Output Voltage VOUT(V)
R1126N
R1126N151x
VIN=2.5V,COUT=Ceramic 1.0F 1.9 20 1.9
R1126N151x
VIN=2.5V,COUT=Ceramic 2.2F 20 10 0 Output Current 1mA10mA 1.6 Output Voltage 1.5 1.4 1.3
Output Current IOUT(mA)
1.8 1.7 Output Current 1mA10mA 1.6 Output Voltage 1.5 1.4 1.3
10 0
1.8 1.7
0 10 20 30 40 50 60 70 80 90 100 Time t(s)
0 10 20 30 40 50 60 70 80 90 100 Time t(s)
R1126N151x
VIN=2.5V,COUT=Ceramic 1.0F 1.9 150 1.9
R1126N151x
VIN=2.5V,COUT=Ceramic 2.2F 150 100 50 Output Current 50mA100mA 1.6 1.5 1.4 1.3 Output Voltage 0
Output Current IOUT(mA)
1.8 1.7 Output Current 50mA100mA 1.6 1.5 1.4 1.3 0 2 4 6 8 10 12 14 16 18 20 Time t(s) Output Voltage
100 50 0
1.8 1.7
0
2
4
6
8 10 12 14 16 18 20 Time t(s)
R1126N281x
VIN=3.8V,COUT=Ceramic 1.0F 3.2 60 3.2
R1126N281x
VIN=3.8V,COUT=Ceramic 2.2F 60 30 Output Current 0mA30mA Output Voltage 0
Output Current IOUT(mA)
3.1 3.0 2.9 2.8 2.7 2.6 0 10 20 30 40 50 60 70 80 90 Time t(s) Output Voltage Output Current 0mA30mA
30 0
3.1 3.0 2.9 2.8 2.7 2.6
0 10 20 30 40 50 60 70 80 90 100 Time t(s)
Output Current IOUT(mA)
Output Voltage VOUT(V)
Output Voltage VOUT(V)
Output Current IOUT(mA)
Output Voltage VOUT(V)
Output Voltage VOUT(V)
Output Current IOUT(mA)
Output Voltage VOUT(V)
Output Voltage VOUT(V)
15
R1126N
R1126N281x
VIN=3.8V,COUT=Ceramic 1.0F 3.2 20 3.2
R1126N281x
VIN=3.8V,COUT=Ceramic 2.2F 20 10 Output Current 1mA10mA Output Voltage 2.8 2.7 2.9 0
Output Current IOUT(mA)
3.1 3.0 2.9 2.8 2.7 2.6 0 10 20 30 40 50 60 70 80 90 Time t(s) Output Voltage Output Current 1mA10mA
10 0
3.1 3.0 2.9
0 10 20 30 40 50 60 70 80 90 100 Time t(s)
R1126N281x
VIN=3.8V,COUT=Ceramic 1.0F 3.2 150 3.2
R1126N281x
VIN=3.8V,COUT=Ceramic 2.2F 150 100 50 Output Current 50mA100mA 2.9 2.8 2.7 2.6 Output Voltage 0
Output Current IOUT(mA)
3.1 3.0 Output Current 50mA100mA 2.9 2.8 2.7 2.6 0 2 4 6 8 10 12 14 16 18 20 Time t(s) Output Voltage
100 50 0
3.1 3.0
0
2
4
6
8 10 12 14 16 18 20 Time t(s)
R1126N401x
VIN=5.0V,COUT=Ceramic 1.0F 4.4 60 4.4
R1126N401x
VIN=5.0V,COUT=Ceramic 2.2F 60 30 Output Current 0mA30mA Output Voltage 4.0 3.9 3.8 0
Output Current IOUT(mA)
4.3 4.2 4.1 4.0 3.9 3.8 0 10 20 30 40 50 60 70 80 90 Time t(s) Output Voltage Output Current 0mA30mA
30 0
4.3 4.2 4.1
0 10 20 30 40 50 60 70 80 90 100 Time t(s)
16
Output Current IOUT(mA)
Output Voltage VOUT(V)
Output Voltage VOUT(V)
Output Current IOUT(mA)
Output Voltage VOUT(V)
Output Voltage VOUT(V)
Output Current IOUT(mA)
Output Voltage VOUT(V)
Output Voltage VOUT(V)
R1126N
R1126N401x
VIN=5.0V,COUT=Ceramic 1.0F 4.4 20 4.4
R1126N401x
VIN=5.0V,COUT=Ceramic 2.2F 20 10 Output Current 1mA10mA Output Voltage 4.0 3.9 3.8 0
Output Current IOUT(mA)
4.3 4.2 4.1 4.0 3.9 3.8 0 10 20 30 40 50 60 70 80 90 Time t(s) Output Voltage
10
4.3 4.2 4.1
Output Current 1mA10mA
0
0 10 20 30 40 50 60 70 80 90 100 Time t(s)
R1126N401x
VIN=5.0V,COUT=Ceramic 1.0F 4.4 150 4.4
R1126N401x
VIN=5.0V,COUT=Ceramic 2.2F 150 100 50 Output Current 50mA100mA 4.1 4.0 3.9 3.8 Output Voltage 0
Output Current IOUT(mA)
4.3 4.2 Output Current 50mA100mA 4.1 4.0 3.9 3.8 0 2 4 6 8 10 12 14 16 18 20 Time t(s) Output Voltage
100 50 0
4.3 4.2
0
2
4
6
8 10 12 14 16 18 20 Time t(s)
12) Turn-on/off speed with CE pin (D version) (CIN=Ceramic 1.0F, COUT=Ceramic 1.0F)
R1126N151D
6 VIN=2.5V CE Input Voltage 4 6
R1126N151D
VIN=2.5V CE Input Voltage IOUT=0mA IOUT=30mA IOUT=150mA 4
CE Input Voltage VCE(V)
4 3 2 1 0 -5 0 Output Voltage IOUT=0mA IOUT=30mA IOUT=150mA 5 10 15 20 25 30 35 40 45 Time t(s)
2 1 0
4 3 2 1 0 -40 0
2 1 0
Output Voltage
40 80 120 160 200 240 280 320 360 Time t(s)
CE Input Voltage VCE(V)
Output Voltage VOUT(V)
Output Voltage VOUT(V)
5
3
5
3
Output Current IOUT(mA)
Output Voltage VOUT(V)
Output Voltage VOUT(V)
Output Current IOUT(mA)
Output Voltage VOUT(V)
Output Voltage VOUT(V)
17
R1126N
R1126N281D
8 VIN=3.8V CE Input Voltage 4 8
R1126N281D
VIN=3.8V CE Input Voltage 4 2 1 0 Output Voltage IOUT=0mA IOUT=30mA IOUT=150mA
CE Input Voltage VCE(V)
6 5 4 3 2 1 0 -5 0 IOUT=0mA IOUT=30mA IOUT=150mA 5 10 15 20 25 30 35 40 45 Time t(s) Output Voltage
2 1 0
6 5 4 3 2 1 0 -40 0 40 80 120 160 200 240 280 320 360 Time t(s)
R1126N401D
14 VIN=5.0V CE Input Voltage 8 14
R1126N401D
VIN=5.0V 8
CE Input Voltage VCE(V)
10 8 6 4 2 0 -5 0 Output Voltage IOUT=0mA IOUT=30mA IOUT=150mA 5 10 15 20 25 30 35 40 45 Time t(s)
4 2 0
10 8 6 4 2 0
CE Input Voltage
4 2 0 IOUT=0mA IOUT=30mA IOUT=150mA
Output Voltage -40 0 40 80 120 160 200 240 280 320 360 Time t(s)
18
CE Input Voltage VCE(V)
Output Voltage VOUT(V)
Output Voltage VOUT(V)
12
6
12
6
CE Input Voltage VCE(V)
Output Voltage VOUT(V)
Output Voltage VOUT(V)
7
3
7
3
R1126N
TECHNICAL NOTES
VDD C1 VOUT C2
R1126N Series CE GND
(External Components) C2 Ceramic 1.0F Ex. Murata GRM155B30J105KE18B Kyocera CM05X5R105K06AB C1 Ceramic 1.0F When using these ICs, consider the following points: 1.Mounting on PCB 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 as C1 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. 2.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 C2 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.) If you use a tantalum type capacitor and ESR value of the capacitor is large, output might be unstable. Evaluate your circuit with considering frequency characteristics. Depending on the capacitor size, manufacturer, and part number, the bias characteristics and temperature characteristics are different. Evaluate the circuit with actual using capacitors.
19
R1126N
ESR vs. Output Current
When using these ICs, consider the following points: 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. Measurement conditions VIN=VOUT+1V COUT: GRM155B30J105KE18B Frequency Band: 10Hz to 2MHz Temperature: -40C to 25C R1126N151x
100 VIN=1.52V to 6.5V, CIN=COUT=1.0F 100
R1126N281x
VIN=2.82V to 6.5V
Topt=85C 10 10 Topt=-40C 1
Topt=85C
ESR()
ESR()
Topt=-40C 1
0.1
0.1
0.01 0 30 60 90 120 Output Current IOUT(mA) 150
0.01 0 30 60 90 120 Output Current IOUT(mA) 150
R1126N401x
100 VIN=4.02V to 6.5V
Topt=85C 10
ESR()
Topt=-40C 1
0.1
0.01 0 30 60 90 120 Output Current IOUT(mA) 150
20
PACKAGE INFORMATION
PE-SOT-23-5-0510
*
SOT-23-5 (SC-74A)
Unit: mm
PACKAGE DIMENSIONS
2.90.2 1.90.2 (0.95) (0.95) +0.2 1.1 -0.1 0.80.1 4
5
+0.2 1.6 -0.1
2.80.3
0 to 0.1
1
2 0.40.1
3
TAPING SPECIFICATION
0.30.1 +0.1 1.5 0 4.00.1 2.00.05 1.750.1 3.50.05 4.00.1 1.10.1 8.00.3
3.3 2.0MAX.
3.2
TR User Direction of Feed
TAPING REEL DIMENSIONS
(1reel=3000pcs)
11.41.0 9.00.3
210.8
60 +1 0 180 0 -1.5
20.5
130.2
0.2 MIN.
+0.1 0.15 -0.05
PACKAGE INFORMATION
PE-SOT-23-5-0510
POWER DISSIPATION (SOT-23-5)
This specification is at mounted on board. Power Dissipation (PD) depends on conditions of mounting on board. This specification is based on the measurement at the condition below: (Power Dissipation (SOT-23-5) is substitution of SOT-23-6.) Measurement Conditions Standard Land Pattern Environment Board Material Board Dimensions Copper Ratio Through-hole Measurement Result
(Topt=25C,Tjmax=125C)
Mounting on Board (Wind velocity=0m/s) Glass cloth epoxy plactic (Double sided) 40mm x 40mm x 1.6mm Top side : Approx. 50% , Back side : Approx. 50% 0.5mm x 44pcs
Standard Land Pattern Power Dissipation Thermal Resistance
600
Free Air 250mW 400C/W
420mW ja=(125-25C)/0.42W=263C/W
Power Dissipation PD(mW)
500 420 400 300 200 100 0 0 25
On Board
40
Free Air 250
40
50 75 85 100 Ambient Temperature (C)
125
150
Power Dissipation
Measurement Board Pattern IC Mount Area Unit : mm
RECOMMENDED LAND PATTERN
0.7 MAX. 1.0
2.4
0.95 0.95 1.9
(Unit: mm)
MARK INFORMATION
ME-R1126N-0509
R1126N SERIES MARK SPECIFICATION * SOT-23-5 (SC-74A)
1 4
1 2 3 4 5
, ,
2 5
,
3
: Product Code (refer to Part Number vs. Product Code) : Lot Number ( 4 ,
5
: alphabetic character)
*
Part Number vs. Product Code
Product Code
1 2 3
Part Number R1126N151B R1126N161B R1126N171B R1126N181B R1126N191B R1126N201B R1126N211B R1126N221B R1126N231B R1126N241B R1126N251B R1126N261B R1126N271B R1126N281B R1126N291B R1126N301B R1126N311B R1126N321B R1126N331B R1126N341B R1126N351B R1126N361B R1126N371B R1126N381B R1126N391B R1126N401B R1126N181B5 R1126N281B5
Part Number R1126N151D R1126N161D R1126N171D R1126N181D R1126N191D R1126N201D R1126N211D R1126N221D R1126N231D R1126N241D R1126N251D R1126N261D R1126N271D R1126N281D R1126N291D R1126N301D R1126N311D R1126N321D R1126N331D R1126N341D R1126N351D R1126N361D R1126N371D R1126N381D R1126N391D R1126N401D R1126N181D5 R1126N281D5
Product Code
1 2 3
2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 4 4 4
5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2
3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3
1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 4 4 4
5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2

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