R1124N SERIES
LOW NOISE 150mA LDO REGULATOR
NO.EA-095-0512
1
OUTLINE
The R1124N 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 lim it 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 R1124N Series are excellent, thus these ICs are very suitable for the power supply for
hand-held communi cation equipment.
The output voltage of these ICs is fixed with high a ccura cy. Since the package for these ICs is SOT-23-5, high
density mounting of the ICs on boards i s po ssible.
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 Volt age Accuracy.............................................±2.0%
•
Small Packages .................................................................SOT-23-5
• 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)
C
IN=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.
R1124N
2
BLOCK DIAGRAMS
R1124Nxx1A R1124Nxx1B
VDD VOUT
CE GND
Current Limit
Vref
V
OUT
GND
V
DD
CE
Vref
Current Limit
+
-
R1124Nxx1D
VOUT
GND
VDD
CE
Vref
Current Limit
+
-
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;
R1124Nxx1x-xx ←Part Number
↑ ↑ ↑
a b c
Code Contents
a Setting Output Voltage (VOUT):
Stepwise setting with a step of 0.1V in the range of 1.5V to 4.0V is possible
b
Designation of Active Type:
A: active low type
B: active high type
D: active high, with auto discharge
c Designation of Taping Type:
Ex. TR (refer to Taping Specifications; TR type is the standard dire ction.)
R1124N
3
PIN CONFIGURATION
SOT-23-5
12
3
54
(mark side)
PIN DESCRIPTIONS
Pin No. Symbol Description
1 VOUT Output pin
2 GND Ground Pin
3 VDD Input Pin
4 CE or CE Chip Enable Pin
5 NC No Connection
ABSOLUTE MAXIMUM RATINGS
Symbol Item Rating Unit
VIN Input Voltage 6.5 V
VCE Input Voltage ( CE or CE Pin) 6.5 V
VOUT Output Voltage −0.3~VIN+0.3 V
IOUT Output Current 200 mA
PD Power Dissipation(SOT-23-5) ∗1 420 mW
Topt Operating Temperature Range −40~85 °C
Tstg Storage Temperature Range −55~125 °C
∗1 For Power Dissipation, please refer to PACKAGE INFORMATION to be described.
R1124N
4
ELECTRICAL CHARACTERISTICS
• R1124Nxx1A
Topt=25°C
Symbol Item Conditions Min. Typ. Max. Unit
VOUT Output Voltage VIN = Set VOUT+1V
1mA
<
=
IOUT
<
=
30mA VOUT×
0.980 VOUT×
1.020 V
IOUT Output Current VIN−VOUT = 1.0V 150 mA
∆VOUT/∆IOUT Load Regulation VIN = Set VOUT+1V
1mA
<
=
IOUT
<
=
150mA 22 40 mV
VDIF Dropout Voltage Refer to the ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
ISS Supply Current VIN = Set VOUT+1V, IOUT = 0mA 75 95
µA
Istandby Supply Current
(Standby) VIN = Set VOUT+1V
VCE = VDD 0.1 1.0
µA
∆VOUT/∆VIN Line Regulation
VOUT > 1.7V,
Set VOUT+0.5V
<
=
VIN
<
=
6.0V
(VOUT
<
=
1.7V, 2.2V ≤ VIN
<
=
6.0V)
IOUT = 30mA
0.02 0.10 %/V
RR Ripple Rejection
f=1kHz
f=10kHz
Ripple 0.5Vp−p
VOUT > 1.7V, VIN−VOUT = 1.0V
VOUT
<
=
1.7V, VIN−VOUT = 1.2V
IOUT = 30mA
70
60
dB
VIN Input Voltage 2.0 6.0 V
∆VOUT/∆T Output Voltage
Temperature Coefficient IOUT = 30mA
−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
MΩ
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
R1124N
5
• R1124Nxx1B/D
Topt=25°C
Symbol Item Conditions Min. Typ. Max. Unit
VOUT Output Voltage VIN = Set VOUT+1V
1mA
<
=
IOUT
<
=
30mA VOUT×
0.980 VOUT×
1.020 V
IOUT Output Current VIN−VOUT = 1.0V 150 mA
∆VOUT/∆IOUT Load Regulation VIN = Set VOUT+1V
1mA
<
=
IOUT
<
=
150mA 22 40 mV
VDIF Dropout Voltage Refer to the ELECTRICAL CHARACT ERISTICS by OUTPUT
VOLTAGE
ISS Supply Current VIN = Set VOUT+1V, IOUT = 0mA 75 95
µA
Istandby Supply Current (Standby) VIN = Set VOUT+1V
VCE = GND 0.1 1.0
µA
∆VOUT/∆VIN Line Regulation
VOUT > 1.7V,
Set VOUT+0.5V
<
=
VIN
<
=
6.0V
(VOUT
<
=
1.7V, 2.2V ≤
VIN
<
=
6.0V) IOUT = 30mA
0.02 0.10 %/V
RR Ripple Rejection
f=1kHz
f=10kHz
Ripple 0.5Vp−p
VOUT > 1.7V, VIN−VOUT = 1.0V
VOUT
<
=
1.7, VIN−VOUT = 1.2V
IOUT = 30mA
70
60
dB
VIN Input Voltage 2.0 6.0 V
∆VOUT/∆T Output Voltage
Temperature Coefficient IOUT = 30mA
−40°C
<
=
Topt
<
=
85°C ±100 ppm
/°C
ILIM Short Current Limit VOUT = 0V 40 mA
RPD CE Pull-down Resistance 0.7 2.0 8.0
MΩ
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
RLOW On Resistance of Nch for
auto-discharge
(Only for D version) VCE = 0V 60 Ω
R1124N
6
• ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
Topt = 25°C
Dropout Voltage
VDIF (V)
Output Voltage
V
OUT (V) Condition Typ. Max.
VOUT = 1.5 0.38 0.70
VOUT = 1.6 0.36 0.65
VOUT = 1.7 0.34 0.60
1.8
<
=
VOUT
<
=
2.0 0.32 0.55
2.1
<
=
VOUT
<
=
2.7 0.28 0.50
2.8
<
=
VOUT
<
=
4.0
IOUT = 150mA
0.22 0.35
TECHNICAL NOTES
When using these ICs, consider the following p oints:
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: When the additional ceramic capacitors are connected 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
component s 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 1.0µF 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
R1124N
7
TEST CIRCUITS
CE
VOUT OUT
GND
1.0µF1.0µF
VDD
IN R1124Nxx1B
SERIES IOUT
CE
VOUT OUT
GND
1.0µF1.0µF
VDD
IN R1124Nxx1B
SERIES
ISS
Fig.1 Standard test Circuit Fig.2 Supply Current Test Circuit
CE
VOUT OUT
GND
1.0µF
VDD
IN R1124Nxx1B
SERIES IOUT
P.G.
CE
V
OUT
OUT
GND I1 I2
1.0µF1.0µF
V
DD
IN R1124Nxx1B
SERIES
Fig.3 Ripple Rejection, Line Transient Fig.4 Load Transient Response Test Circuit
Response Test Circuit
R1124N
8
TYPICAL APPLICATIONS
R1124Nxx1A
SERIES V
OUT
OUTIN V
DD
GND
CE
Cap.
Cap.
++
R1124Nxx1B/D
SERIES V
OUT
OUTIN V
DD
GND
CE
Cap.
Cap.
++
(External Components)
Output Capacitor; Ceramic 0.47µF (Set Output Voltage in the range from 2.5 to 5.0V)
Ceramic 1.0µF (Set Output Voltage in the range from 2.0 to 2.4V)
Input Capacitor; Ceramic 1.0µF
TYPICAL CHARACTERISTICS
1) Output Voltag e vs. Output Current (Topt=25°C)
R1124N151x R1124N281x
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
Output Current IOUT(mA)
Output Voltage VOUT(V)
0 400300200100
2.5V
1.8V
2.0V
V
IN=3.5V
3.0
2.5
2.0
1.5
1.0
0.5
0.0
Output Current IOUT(mA)
Output Voltage VOUT(V)
0 400300200100
3.5V
3.8V
3.1V
VIN
=4.8V
R1124N401x
4.5
3.5
4.0
3.0
2.0
2.5
1.5
1.0
0.5
0.0
Output Current IOUT(mA)
Output Voltage VOUT(V)
0 400300200100
4.5V
5.0V
4.3V
VIN
=6.0V
R1124N
9
2) Output Voltag e vs. Input Voltage (Topt=25°C)
R1124N151x R1124N281x
1.7
1.3
1.4
1.5
1.6
1.1
1.2
1.0
Input Voltage VIN(V)
Output Voltage VOUT(V)
164532
I
OUT
=1mA
I
OUT
=30mA
I
OUT
=50mA
2.9
2.8
2.7
2.6
2.5
2.4
2.3
2.2
2.1
2.0 26543
Input Voltage V
IN
(V)
Output Voltage V
OUT
(V)
I
OUT
=1mA
I
OUT
=30mA
I
OUT
=50mA
R1124N401x
4.2
4.0
3.6
3.2
3.8
3.4
3.0 216543
Input Voltage VIN(V)
Output Voltage VOUT(V)
I
OUT
=1mA
I
OUT
=30mA
I
OUT
=50mA
3) Supply Current vs. Input Volt age (Topt=25°C)
R1124N151x R1124N281x
70
60
90
80
50
40
30
20
10
0
Supply Current ISS(µA)
2106543
Input Voltage VIN(V)
70
60
90
80
50
40
30
20
10
02106543
Supply Current ISS(µA)
Input Voltage VIN(V)
R1124N
10
R1124N401x
70
60
90
80
50
40
30
20
10
02106543
Supply Current ISS(µA)
Input Voltage VIN(V)
4) Output Voltag e vs. Temperature
R1124N151x R1124N281x
1.53
1.52
1.51
1.50
1.49
1.48
1.47
1.46
Temperature Topt(°C)
Output Voltage VOUT(V)
10-15-40 856035
2.86
2.80
2.78
2.76
2.84
2.82
2.74 10-15-40 856035
Temperature Topt(°C)
Output Voltage VOUT(V)
R1124N401x
4.08
4.06
4.04
4.02
4.00
3.98
3.96
3.94
3.92 10-15-40 856035
Temperature Topt(°C)
Output Voltage V
OUT
(V)
R1124N
11
5) Supply Current vs. Temperature
R1124N151x R1124N281x
90
80
70
60
50
40
30
20
10
0
Temperature Topt(°C)
Supply Current ISS(µA)
10-15-40 856035
90
80
70
60
50
40
30
20
10
0
Supply Current ISS(µA)
10-15-40 856035
Temperature Topt(°C)
R1124N401x
90
80
70
60
50
40
30
20
10
010-15-40 856035
Supply Current ISS(µA)
Temperature Topt(°C)
6) Dropout Volt age vs. Temperature
R1124N151x R1124N161x
0.6
0.5
0.4
0.3
0.2
0.1
0.0
Output Current IOUT(mA)
Dropout Voltage VDIF(V)
50250 15012510075
85°C
25°C
-40°C
0.6
0.5
0.4
0.3
0.2
0.1
0.0 50250 15012510075
Output Current IOUT(mA)
Dropout Voltage VDIF(V)
85°C
25°C
-40°C
R1124N
12
R1124N171x R1124N181x
0.6
0.5
0.4
0.3
0.2
0.1
0.0 50250 15012510075
Output Current I
OUT
(mA)
Dropout Voltage V
DIF
(V)
85°C
25°C
-40°C
0.6
0.5
0.4
0.3
0.2
0.1
0.0 50250 15012510075
Output Current IOUT(mA)
Dropout Voltage VDIF(V)
85°C
25°C
-40°C
R1124N211x R1124N281x
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00 50250 15012510075
Output Current IOUT(mA)
Dropout Voltage VDIF(V)
85°C
25°C
-40°C
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00 50250 15012510075
Output Current IOUT(mA)
Dropout Voltage VDIF(V)
85°C
25°C
-40°C
R1124N401x
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00 50250 15012510075
Output Current IOUT(mA)
Dropout Voltage VDIF(V)
85°C
25°C
-40°C
R1124N
13
7) Dropout Volt age vs. Set Output Voltage (Topt=25°C)
0.60
0.40
0.50
0.20
0.10
0.30
0.00
Set Output Voltage VREG(V)
Dropout Voltage VDIF(V)
2.01.51.0 4.03.53.02.5
10mA
30mA
50mA
150mA
8) Ripple Rejection vs. Input Bias Voltage (Topt=25°C, CIN=none, COUT=ceramic0.47µF)
R1124N281x R1124N281x
90
70
80
50
60
30
40
10
20
0
Input Voltage V
IN
(V)
Ripple 0.2Vp-p, I
OUT
=1mA
Ripple Rejection RR(dB)
3.02.9 3.33.23.1
f=1kHz
f=10kHz
f=100kHz
90
70
80
50
60
30
40
10
20
0
Ripple 0.5Vp-p, IOUT
=1mA
3.02.9 3.33.23.1
Input Voltage V
IN
(V)
Ripple Rejection RR(dB)
f=1kHz
f=10kHz
f=100kHz
R1124N281x R1124N281x
90
70
80
50
60
30
40
10
20
0
Ripple 0.2Vp-p, IOUT
=30mA
3.02.9 3.33.23.1
Input Voltage V
IN
(V)
Ripple Rejection RR(dB)
f=1kHz
f=10kHz
f=100kHz
90
70
80
50
60
30
40
10
20
0
Ripple 0.5Vp-p, IOUT
=30mA
3.02.9 3.33.23.1
Input Voltage V
IN
(V)
Ripple Rejection RR(dB)
f=1kHz
f=10kHz
f=100kHz
R1124N
14
R1124N281x R1124N281x
90
70
80
50
60
30
40
10
20
0
Ripple 0.2Vp-p, IOUT
=50mA
3.02.9 3.33.23.1
Input Voltage V
IN
(V)
Ripple Rejection RR(dB)
f=1kHz
f=10kHz
f=100kHz
90
70
80
50
60
30
40
10
20
0
Ripple 0.5Vp-p, IOUT
=50mA
3.02.9 3.33.23.1
Input Voltage V
IN
(V)
Ripple Rejection RR(dB)
f=1kHz
f=10kHz
f=100kHz
9) Ripple Rejection vs. Frequency (CIN=none)
R1124N151x R1124N151x
90
70
80
50
60
30
40
10
20
0
Frequency f(kHz)
VIN=2.5VDC+0.5Vp-p,
COUT=Ceramic 1.0µF
10.1 10010
Ripple Rejection RR(dB)
IOUT=1mA
IOUT=30mA
IOUT=50mA
90
70
80
50
60
30
40
10
20
0
V
IN=2.5VDC+0.5Vp-p,
COUT=Ceramic 2.2µF
10.1 10010
Frequency f(kHz)
Ripple Rejection RR(dB)
IOUT=1mA
IOUT=30mA
IOUT=50mA
R1124N281x R1124N281x
90
70
80
50
60
30
40
10
20
0
V
IN=3.8VDC+0.5Vp-p,
COUT=Ceramic 0.47µF
10.1 10010
Frequency f(kHz)
Ripple Rejection RR(dB)
IOUT=1mA
IOUT=30mA
IOUT=50mA
90
70
80
50
60
30
40
10
20
0
V
IN=3.8VDC+0.5Vp-p,
COUT=Ceramic 1.0µF
10.1 10010
Frequency f(kHz)
Ripple Rejection RR(dB)
IOUT=1mA
IOUT=30mA
IOUT=50mA
R1124N
15
R1124N401x R1124N401x
90
70
80
50
60
30
40
10
20
0
V
IN=5.0VDC+0.5Vp-p,
COUT=Ceramic 0.47µF
10.1 10010
Frequency f(kHz)
Ripple Rejection RR(dB)
IOUT=1mA
IOUT=30mA
IOUT=50mA
90
70
80
50
60
30
40
10
20
0
V
IN
=5.0V
DC
+0.5Vp-p,
COUT=Ceramic 1.0µF
10.1 10010
Frequency f(kHz)
Ripple Rejection RR(dB)
I
OUT
=1mA
I
OUT
=30mA
I
OUT
=50mA
10) Input Transient Response (IOUT=30mA, CIN=none, tr=tf=5µs, COUT=Ceramic 0.47µF)
R1124N151x
1.55
1.54
1.53
1.52
1.51
1.50
1.49
4
3
2
1
0
Time T(µs)
Output Voltage VOUT(V)
Input Voltage VIN(V)
100 20 40506070809010030
Input Voltage
Output Voltage
R1124N281x
2.85
2.84
2.83
2.82
2.81
2.80
2.79
6
5
4
3
2
1
0
100 20 40506070809010030 Time T(µs)
Output Voltage VOUT(V)
Input Voltage VIN(V)
Input Voltage
Output Voltage
R1124N
16
11) Load Transient Response (tr=tf=0.5µs, CIN=Ceramic 1.0µF)
R1124N151x
VIN=2.5V, COUT=Ceramic 1.0µF
1.75
1.70
1.65
1.60
1.55
1.50
1.45
150
100
50
0
Output Current IOUT(mA)
20 4 8 10 12 14 16 18 206
Time T(µs)
Output Voltage VOUT(V)
Output Current
Output Voltage
R1124N151x
VIN=2.5V, COUT=Ceramic 2.2µF
1.75
1.70
1.65
1.60
1.55
1.50
1.45
150
100
50
0
20 4 8 10 12 14 16 18 206
Output Current IOUT(mA)
Time T(µs)
Output Voltage VOUT(V)
Output Current
Output Voltage
R1124N281x
VIN=3.8V, COUT=Ceramic 0.47µF
3.05
3.00
2.95
2.90
2.85
2.80
2.75
150
100
50
0
20 4 8 10 12 14 16 18 206
Output Current IOUT(mA)
Time T(µs)
Output Voltage VOUT(V)
Output Current
Output Voltage
R1124N
17
R1124N281x
VIN=3.8V, COUT=Ceramic 1.0µF
3.05
3.00
2.95
2.90
2.85
2.80
2.75
150
100
50
0
20 4 8 10 12 14 16 18 206
Output Current IOUT(mA)
Time T(µs)
Output Voltage VOUT(V)
Output Current
Output Voltage
R1124N281x
VIN=3.8V, COUT=Ceramic 2.2µF
3.05
3.00
2.95
2.90
2.85
2.80
2.75
150
100
50
0
20 4 8 10 12 14 16 18 206
Output Current IOUT(mA)
Time T(µs)
Output Voltage VOUT(V)
Output Current
Output Voltage
12) Turn-on/off speed with CE pin (D version)
R1124N151D (VIN=2.5V, CIN=Ceramic 1.0µA, COUT=Ceramic 1.0µF)
4
0
1
2
3
6
2
3
0
1
4
5
Time T(µs)
CE Input Voltage VCE(V)
Output Voltage VOUT(V)
50-5 2510 15 20
VIN
IOUT= 0mA
IOUT= 30mA
IOUT= 150mA
4
0
1
2
3
6
2
3
0
1
4
5
500-50 450100150200250 300 350 400
Time T(µs)
CE Input Voltage VCE(V)
Output Voltage VOUT(V)
VIN
IOUT= 0mA
IOUT= 30mA
IOUT= 150mA
R1124N
18
R1124N281D (VIN=3.8V, CIN=Ceramic 0.47µA, COUT=Ceramic 0.47µF)
4
0
-1
1
2
3
8
4
5
0
3
2
1
6
7
0 5 10 15 20 25-5 Time T(µs)
CE Input Voltage VCE(V)
Output Voltage VOUT(V)
VIN
IOUT= 0mA
IOUT= 30mA
IOUT= 150mA
4
0
-1
1
2
3
8
4
5
0
3
2
1
6
7
0 20406080 120100 140160180-20 Time T(µs)
CE Input Voltage VCE(V)
Output Voltage VOUT(V)
VIN
IOUT= 0mA
IOUT= 30mA
IOUT= 150mA
R1124N401D (VIN=5.0V, CIN=Ceramic 0.47µA, COUT=Ceramic 0.47µF)
8
6
4
2
0
-2
14
12
10
8
6
4
2
0
-2
0 5 10 15 20 25-5 Time T(µs)
CE Input Voltage VCE(V)
Output Voltage VOUT(V)
VIN
IOUT= 0mA
IOUT= 30mA
IOUT= 150mA
8
6
4
2
0
-2
14
12
10
8
6
4
2
0
-2
0 20 40 60 80 100120140160 180-20
Time T(µs)
CE Input Voltage V
CE
(V)
Output Voltage V
OUT
(V)
V
IN
I
OUT
= 0mA
I
OUT
= 30mA
I
OUT
= 150mA
R1124N
19
TECHNICAL NOTES
When using these ICs, consider the following p oints:
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 a s follows:
GND
V
OUT
CE
V
IN
V
IN
I
OUT
ESR
R1124Nxx1B S.A.
Ceramic
Cap.
Ceramic
Cap.
Spectrum
Analyzer
Measuring Circuit for white noise; R1124Nxx1B
The relations between IOUT (Output Current) and ESR of an output capacitor are shown below. The conditions
when the white noise level is under 40µV (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
component s as ones to be used on the PCB.)
<Measurement conditions>
(1) VIN=VOUT+1V
(2) Frequency Band: 10Hz to 2MHz
(3) Temperature: −40°C to 85°C
R1124N151x R1124N161x
100
10
1
0.1
0.01
Load Current I
OUT
(mA)
060
30
150120
ESR (Ω)
90
C
IN
=Ceramic 1.0µA,
C
OUT
=Ceramic 1.0µF
100
10
1
0.1
0.01
Load Current I
OUT
(mA)
060
30
150120
ESR (Ω)
90
C
IN
=Ceramic 0.47µA,
C
OUT
=Ceramic 0.68µF
R1124N
20
R1124N211x R1124N281x
100
10
1
0.1
0.01
Load Current I
OUT
(mA)
060
30
150120
ESR (Ω)
90
C
IN
=Ceramic 0.47µA,
C
OUT
=Ceramic 0.47µF
100
10
1
0.1
0.01
Load Current I
OUT
(mA)
060
30
150120
ESR (Ω)
90
C
IN
=Ceramic 0.47µA,
C
OUT
=Ceramic 0.47µF
PACKAGE INFORMATION PE-SOT-23-5-0510
• SOT-23-5 (SC-74A) Unit: mm
PACKAGE DIMENSIONS
2.9±0.2
0.4±0.1
1.9±0.2
(0.95) (0.95)
54
123
+0.2
−0.1
1.6
+0.2
−0.1
1.1
+0.1
−0.05
0.15
2.8±0.3
0 to 0.1
0.8±0.1
0.2 MIN.
TAPING SPECIFICATION
2.0MAX.
0.3±0.1
4.0±0.1
2.0±0.05
4.0±0.1
3.3
3.2
8.0±0.3
1.75±0.1
3.5±0.05
φ1.5+0.1
0
∅1.1±0.1
TR
User Direction of Feed
TAPING REEL DIMENSIONS
(1reel=3000pcs)
2±0.5
11.4±1.0
9.0±0.3
13±0.2
∅
60
∅+1
0
180
∅0
−1.5
21±0.8
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 Mounting on Board (Wind velocity=0m/s)
Board Material Glass cloth epoxy plactic (Double sided)
Board Dimensions 40mm × 40mm × 1.6mm
Copper Ratio Top side : Approx. 50% , Back side : Approx. 50%
Through-hole φ0.5mm × 44pcs
Measurement Result
(Topt=25°C,Tjmax=125°C)
Standard Land Pattern Free Air
Power Dissipation 420mW 250mW
Thermal Resistance θja=(125−25°C)/0.42W=263°C/W 400°C/W
0 50 10025 75 85 125 150
Ambient Temperature (°C)
0
200
100
300
400
250
420
500
600
Power Dissipation P
D
(mW)
On Board
Free Air
40
40
Power Dissipation Measurement Board Pattern
IC Mount Area Unit : mm
RECOMMENDED LAND PATTERN
0.7 MAX.
0.95
0.95
1.9
2.4
1.0
(Unit: mm)
MARK INFORMATION ME-R1124N-0310
R1124N SERIES MARK SPECIFICATION
• SOT-23-5 (SC-74A)
1 2 3 4 5
1
,
2
,
3
: Product Code (refer to Part Number vs. Product Code)
4
,
5
: Lot Number
• Part Number vs. Product Code
Product Code Product Code Product Code
Part Number
1
2
3
Part Number
1 2 3
Part Number
1 2 3
R1124N151A 7 1 5 R1124N151B 8 1 5 R1124N151D 9 1 5
R1124N161A 7 1 6 R1124N161B 8 1 6 R1124N161D 9 1 6
R1124N171A 7 1 7 R1124N171B 8 1 7 R1124N171D 9 1 7
R1124N181A 7 1 8 R1124N181B 8 1 8 R1124N181D 9 1 8
R1124N191A 7 1 9 R1124N191B 8 1 9 R1124N191D 9 1 9
R1124N201A 7 2 0 R1124N201B 8 2 0 R1124N201D 9 2 0
R1124N211A 7 2 1 R1124N211B 8 2 1 R1124N211D 9 2 1
R1124N221A 7 2 2 R1124N221B 8 2 2 R1124N221D 9 2 2
R1124N231A 7 2 3 R1124N231B 8 2 3 R1124N231D 9 2 3
R1124N241A 7 2 4 R1124N241B 8 2 4 R1124N241D 9 2 4
R1124N251A 7 2 5 R1124N251B 8 2 5 R1124N251D 9 2 5
R1124N261A 7 2 6 R1124N261B 8 2 6 R1124N261D 9 2 6
R1124N271A 7 2 7 R1124N271B 8 2 7 R1124N271D 9 2 7
R1124N281A 7 2 8 R1124N281B 8 2 8 R1124N281D 9 2 8
R1124N291A 7 2 9 R1124N291B 8 2 9 R1124N291D 9 2 9
R1124N301A 7 3 0 R1124N301B 8 3 0 R1124N301D 9 3 0
R1124N311A 7 3 1 R1124N311B 8 3 1 R1124N311D 9 3 1
R1124N321A 7 3 2 R1124N321B 8 3 2 R1124N321D 9 3 2
R1124N331A 7 3 3 R1124N331B 8 3 3 R1124N331D 9 3 3
R1124N341A 7 3 4 R1124N341B 8 3 4 R1124N341D 9 3 4
R1124N351A 7 3 5 R1124N351B 8 3 5 R1124N351D 9 3 5
R1124N361A 7 3 6 R1124N361B 8 3 6 R1124N361D 9 3 6
R1124N371A 7 3 7 R1124N371B 8 3 7 R1124N371D 9 3 7
R1124N381A 7 3 8 R1124N381B 8 3 8 R1124N381D 9 3 8
R1124N391A 7 3 9 R1124N391B 8 3 9 R1124N391D 9 3 9
R1124N401A 7 4 0 R1124N401B 8 4 0 R1124N401D 9 4 0
R1124N281A5
7 4 1
R1124N281B5
841
R1124N281D5
941
