Low Voltage 150mA LDO REGULATOR
R1182x SERIES Preliminary
1
OUTLINE
The R1182x Series are CMOS-based positive voltage regulator ICs with high output voltage accuracy and low
supply current. Each of these ICs consists of a voltage reference unit, an error amplifier, resistor-net for voltage
setting, a current limit circuit which prevents the destruction by excess current, and so on.
The output voltage of these ICs is fixed with high accuracy. The R1182 Series has low dropout voltage caused
by built in low on resistance transistor. Further, the consumption current of IC itself is Typ. 3.0µA at no load, at
the same time, compared with the conventional low supply current regulator, transient response is improved.
Since the packages for these ICs are SOT-23-5 (R1182N Series) and ultra small PLP1616-6 (R1182K Series),
high density mounting of the ICs on boards is possible.
FEATURES
• Low Supply Current.......................................... Typ. 3µA(Except the current through CE pull-down circuit)
• Standby Mode .................................................. Typ. 0.1µA
• Low Dropout Voltage ........................................ Typ. 0.22V (IOUT=150mA 3.0V Output type)
• Input Voltage Range ...........................................1.5V to 6.0V
• High Output Voltage Accuracy.......................... ±1.0% (VOUT≥ 1.5V)
• Small Packages .............................................. SOT-23-5 (R1182N) /PLP1616-6(R1182K)
• Output Voltage.................................................. Stepwise setting with a step of 0.1V in the range of 1.2V to
4.0V is possible
• Built-in Fold Back Protection Circuit ................. Typ. 50mA (Current at short mode)
• Ceramic capacitors are recommended to be used with this IC 0.1µF or more
• Ripple Rejection ...................................................Typ. 55dB at 1kHz (VOUT=1.5V, IOUT=30mA)
..............................................................................Typ. 40dB at 10kHz (VOUT=1.5V, IOUT=30mA)
APPLICATIONS
• Stable voltage reference.
• Power source for electrical appliances such as cameras, camcorders, mobile communication equipment.
• Power source for battery-powered equipment.
R1182x
(
Preliminar
y)
2
BLOCK DIAGRAMS
SELECTION GUIDE
The output voltage, version, and the package 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:
R1182xxx1x-TR ←Part Number
↑ ↑ ↑ ↑
a b c d
Code Contents
a
Designation of Package Type :
N: SOT-23-5 (Mini mold)
K: PLP1616-6
b
Setting Output Voltage (VOUT) :
Stepwise setting with a step of 0.1V in the range of 1.2V to 4.0V is possible.
Exceptions 2.85V output type: R1182X281X5,
1.85V output type: R1182X181X5, 1.25V output type: R1182X121X5
c
Designation of Active Type :
B : active high type
D : active high with auto discharge function at off mode
d Designation of Taping Type :
Ex. TR (refer to Taping Specifications; TR type is the standard direction.)
R1182xxx1B
Vref
Current
+
-
VOUT
GND
CE
VDD
Vref
Current
+
-
R1182xxx1D
CE
VDD VOUT
GND
R1182x
(
Preliminar
y)
3
PIN CONFIGURATION
SOT-23-5 PLP1616-6
12
3
54
(mark side)
PIN DESCRIPTIONS
• SOT-23-5 (R1182Nxx1B/D)
Pin No Symbol Pin Description
1 GND Ground Pin
2 VDD Input Pin
3 VOUT Output pin
4 NC No Connection
5 CE Chip Enable Pin
• PLP1616-6 (R1180Kxx1B/D)
Pin No Symbol Pin Description
1 VDD Input Pin
2 GND Ground Pin
3 CE Chip Enable Pin
4 NC No Connection
5 NC No Connection
6 VOUT Output pin
H:0.60
1.6
1.6
1 2 3
4
5
(mark side)
6
R1182x
(
Preliminar
y)
4
ABSOLUTE MAXIMUM RATINGS
Symbol Item Rating Unit
VIN Input Voltage 6.5 V
VCE Input Voltage (CE Pin) -0.3 to 6.5 V
VOUT Output Voltage −0.3 ~ VIN+0.3 V
IOUT Output Current 200 mA
Power Dissipation (SOT23-5) 250
PD
Power Dissipation(PLP1616-6) T.B.D.
mW
Topt Operating Temperature Range −40 ~ 85 °C
Tstg Storage Temperature Range −55 ~ 125 °C
ELECTRICAL CHARACTERISTICS
• R1182xxx1B/R1182xxx1D
Topt=25°C
Symbol Item Conditions Min. Typ. Max. Unit
VOUT Output Voltage VIN = Set VOUT+1V
IOUT=1mA
VOUT
×0.99
(-15mV)*1)
VOUT
×1.01
(+15mV)*1)
V
IOUT Output Current VIN - VOUT = 1.0V 150 mA
∆VOUT/∆IOUT Load Regulation VIN = Set VOUT+1V
1mA
<
=
IOUT
<
=
150mA 30 80 mV
VDIF Dropout Voltage Refer to the ELECTRICAL CHARACTERISTICS by OUTPUT
VOLTAGE
ISS Supply Current VIN = Set VOUT+1V, IOUT=0mA 3.0 7.0
µA
Istandby Supply Current (Standby) VIN = Set VOUT+1V
VCE = GND 0.1 1.0
µA
∆VOUT/∆VIN Line Regulation Set VOUT+0.5V
<
=
VIN
<
=
6.0V
IOUT = 30mA 0.1 0.3 %/V
VIN Input Voltage 1.5 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 50 mA
IPD CE Pull-down Constant
Current 0.05 0.30 0.55
µA
VCEH CE Input Voltage “H” 1.0 6.0 V
VCEL CE Input Voltage “L” 0.0 0.4 V
en Output Noise BW=10Hz to 100kHz 30 µVrms
Rn Nch Tr. On resistance for
auto discharge function*2) CE=”L” 50
Ω
*1) VOUT≤1.5V, the tolerance is ±15mV.
*2) Only applied to D version.
R1182x
(
Preliminar
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5
• ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
Topt = 25°C
Dropout Voltage
VDIF (V)
Output Voltage VOUT (V)
Condition Typ. Max.
1.2
<
=
VOUT < 1.3 0.60 0.82
1.3
<
=
VOUT < 1.4 0.53 0.75
1.4
<
=
VOUT < 1.5 0.46 0.67
1.5
<
=
VOUT < 2.0 0.43 0.60
2.0
<
=
VOUT < 2.8 0.31 0.40
2.8
<
=
VOUT < 4.0 0.23 0.29
2.1
<
=
VOUT < 2.8 0.19 0.23
VOUT=4.0
IOUT = 150mA
0.25 0.40
External Components and Technical Notes
Phase Compensation
In these ICs, phase compensation is made for securing stable operation even if the load current is varied.
For this purpose, be sure to use a 0.1µF or more capacitor CL (Ceramic type).
If a tantalum capacitor is used, and its ESR (Equivalent Series Resistance) of CL is large, the loop
oscillation may result. Because of this, select CL carefully considering its frequency characteristics.
Mounting on Board
Make VDD and GND lines sufficient. If their impedance is high, pick-up the noise or unstable operation may
result.
Connect the capacitor with a 0.1µF or more between VDD and GND as close as possible.
Set external components, especially the output capacitor, as close as possible to the ICs and make wiring
as short as possible. (Refer to the typical application)
TYPICAL APPLICATION
C1
C2
GND CE
VOUT VDD
R1182X
SERIES
OUT IN
(External components example; Output capacitor: Ceramic type
Input capacitor: Ceramic type
Output Capacitor: 0.1µF: Kyocera CM05B104K06AB
Murata GRM155B31C104KA87B
1.0µF: Kyocera CM05X5R105K06AB
R1182x
(
Preliminar
y)
6
: TDK C1005JB0J105K
: Murata GRM155B30J105KE18B
TYPICAL CHARACTERISTICS
1) Output Voltage vs. Output Current (Topt=25°C)
R1182x121x R1182x281x
R1182x401x
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0 50 100 150 200 250 300 350 400
Output Current IOUT[mA]
Output Voltage VOUT[V]
Vdd=1.5V
Vdd=1.8V
Vdd=2.2V
Vdd=2.7V
Vdd=3.2V
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0 50 100 150 200 250 300 350 400
Output Current IOUT[mA]
Output Voltage VOUT[V]
Vdd=3.1V
Vdd=3.5V
Vdd=3.8V
Vdd=4.8V
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
0 50 100 150 200 250 300 350 400
Output Current IOUT[mA]
Output Voltage VOUT[V]
Vdd=4.3V
Vdd=5.0V
Vdd=6.0V
R1182x
(
Preliminar
y)
7
2) Output Voltage vs. Input Voltage (Topt=25°C)
R1182x121x R1182x281x
R1182x401x
3) Supply Current vs. Input Voltage
R1182x121x R1182x281x
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0123456
Input Voltage VIN[V]
Output Voltage VOUT[V]
Iout=1mA
Iout=30mA
Iout=100mA
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0123456
Input Voltage VIN[V]
Output Voltage VOUT[V]
Iout=1mA
Iout=30mA
Iout=100mA
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
0123456
Input Voltage VIN[V]
Output Voltage VOUT[V]
Iout=1mA
Iout=30mA
Iout=100mA
0
1
2
3
4
5
6
7
8
9
10
1.2 2.2 3.2 4.2 5.2
Input Voltage VIN[V]
Supply Current ISS[µA]
0
2
4
6
8
10
12
14
16
18
20
2.8 3.8 4.8 5.8
Input Voltage VIN[V]
Supply Current ISS[µA]
R1182x
(
Preliminar
y)
8
R1182x401x
4) Output Voltage vs. Temperature (IOUT=30mA)
R1182x121x (VIN=
==
=2.2V) R1182x281x (VIN=
==
=3.8V)
R1182x401x (VIN=
==
=5
55
5V)
0
5
10
15
20
25
30
456
Input Voltage VIN[V]
Supply Current ISS[µA]
1.16
1.17
1.18
1.19
1.2
1.21
1.22
1.23
-50 -25 0 25 50 75 100
Temperature Topt[°C]
Output Voltage VOUT[V]
2.6
2.65
2.7
2.75
2.8
2.85
2.9
2.95
3
-50 -25 0 25 50 75 100
Temperature Topt[°C]
Output Voltage V
OUT
[V]
3.8
3.85
3.9
3.95
4
4.05
4.1
4.15
4.2
-50 -25 0 25 50 75 100
Temperature Topt[°C]
Output Voltage VOUT[V]
R1182x
(
Preliminar
y)
9
5) Supply Current vs. Temperature (Topt=25°C)
R1182x121x(VIN=
==
=2.2V) R1182x281x(VIN=
==
=3
33
3.8V)
R1182x401x(VIN=
==
=5
55
5V)
6) Dropout Voltage vs. Output Current
R1182x121x R1182x281x
0
1
2
3
4
5
6
7
8
9
10
-50 -25 0 25 50 75 100
Temperature Topt[°C]
Supply Current ISS[µA]
0
1
2
3
4
5
6
7
8
9
10
-50 -25 0 25 50 75 100
Temperature Topt[°C]
Supply Current ISS[µA]
0
1
2
3
4
5
6
7
8
9
10
-50 -25 0 25 50 75 100
Temperature Topt[°C]
Supply Current ISS[µA]
0
100
200
300
400
500
600
700
800
0 25 50 75 100 125 150
Output Current IOUT[mA]
Dropout Voltage VDIF[mV]
25°C
-40°C
85°C
0
50
100
150
200
250
300
0 25 50 75 100 125 150
Output Current IOUT[mA]
Dropout Voltage V
DIF
[mV]
85°C 25°C
-40°C
R1182x
(
Preliminar
y)
10
R1182x401x
7) Dropout Voltage vs. Set Output Voltage (Topt=25°C)
8) Ripple Rejection vs. Input Bias Voltage (CIN=none, R1182x281x Vripple=0.2Vp-p
IOUT=1mA IOUT=10mA
0
50
100
150
200
250
0 25 50 75 100 125 150
Output Current IOUT[mA]
Dropout Voltage V
DIF
[mV]
85°C
25°C
-40°C
0
100
200
300
400
500
600
700
11.522.533.54
Set Output Voltage VREG[V]
Dropout Voltage V
DIF
[mV]
1mA
10mA
30mA
100mA
150mA
0
10
20
30
40
50
60
70
80
2.90 3.00 3.10 3.20 3.30
Input Voltage VIN[V]
Ripple Rejection RR[dB]
100Hz
1KHz
10KHz
100KHz
0
10
20
30
40
50
60
70
80
2.90 3.00 3.10 3.20 3.30
Input Voltage VIN[V]
Ripple Rejection RR[dB]
100Hz
1KHz
10KHz
100KHz
R1182x
(
Preliminar
y)
11
IOUT=100mA
9) Ripple Rejection vs. Frequency (Topt=25°C, CIN=none, COUT=ceramic0.1µF)
R1182X121X VIN=2.2VDC+0.2Vp-p R1182X281X VIN=3.8VDC+0.2Vp-p
R1182X401X VIN=5.0VDC+0.2Vp-p
0
10
20
30
40
50
60
70
80
2.90 3.00 3.10 3.20 3.30
Input Voltage VIN[V]
Ripple Rejection RR[dB]
100Hz
1KHz
10KHz
100KHz
0
10
20
30
40
50
60
70
80
0.10 1.00 10.00 100.00
Frequency f[kHz]
Ripple Rejection RR[dB]
IOUT=1mA
IOUT=30mA
IOUT=100mA
0
10
20
30
40
50
60
70
80
0.10 1.00 10.00 100.00
Frequency f[kHz]
Ripple Rejection RR[dB]
IOUT=1mA
IOUT=30mA
IOUT=100mA
0
10
20
30
40
50
60
70
80
0.10 1.00 10.00 100.00
Frequency f[kHz]
Ripple Rejection RR[dB]
IOUT=1mA
IOUT=30mA
IOUT=100mA
R1182x
(
Preliminar
y)
12
10) Input Transient Response (CIN=none, tr=tf=5µs, IOUT=30mA)
R1182X121X COUT=0.1µF R1182X121X COUT=1µF
R1182X281x COUT=Ceramic 0.1µF R1182X281X COUT=Ceramic 1.0µF
R1182X401x COUT=Ceramic 0.1µF R1182X401x COUT=Ceramic 1.0µF
1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
-10 0 10 20 30 40 50 60 70 80 90
Time T[µs]
Output Voltage V
OUT
[V]
-3
-2
-1
0
1
2
3
4
Input Voltage V
IN
[V]
Input Voltage
Output Voltage
1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
-10 0 10 20 30 40 50 60 70 80 90
Time T[µs]
Output Voltage VOUT[V]
-3
-2
-1
0
1
2
3
4
Input Voltage VIN[V]
Input Voltage
Output Voltage
2.6
2.7
2.8
2.9
3
3.1
3.2
3.3
-10 0 10 20 30 40 50 60 70 80 90
Time T[µs]
Output Voltage VOUT[V]
-1
0
1
2
3
4
5
6
Input Voltage VIN[V]
Input Voltage
Output Voltage
2.6
2.7
2.8
2.9
3
3.1
3.2
3.3
-10 0 10 20 30 40 50 60 70 80 90
Time T[µs]
Output Voltage VOUT[V]
-1
0
1
2
3
4
5
6
Input Voltage VIN[V]
Input Voltage
Output Voltage
3.8
3.9
4
4.1
4.2
4.3
4.4
4.5
-10 0 10 20 30 40 50 60 70 80 90
Time T[µs]
Output Voltage V
OUT
[V]
0
1
2
3
4
5
6
7
Input Voltage V
IN
[V]
Input Voltage
Output Voltage
3.8
3.9
4
4.1
4.2
4.3
4.4
4.5
-10 0 10 20 30 40 50 60 70 80 90
Time T[µs]
Output Voltage VOUT[V]
0
1
2
3
4
5
6
7
Input Voltage VIN[V]
Input Voltage
Output Voltage
R1182x
(
Preliminar
y)
13
11) Load Transient Response (tr=tf=0.5µs, CIN=Ceramic 0.1µF)
R1182X281X VIN=3.8V COUT=0.1µF R1182X281X VIN=3.8V COUT=0.1µF
R1182X281X VIN=3.8V COUT=1µF R1182X281X VIN=3.8V COUT=1µF
R1182X281X VIN=3.8V COUT=2.2µF R1182X121X VIN=2.2V, COUT=0.1µF
2.4
2.6
2.8
3
3.2
3.4
3.6
3.8
4
4.2
4.4
-25 0 25 50 75 100 125 150 175
Time T[µs]
Output Voltage V
OUT
[V]
-400
-350
-300
-250
-200
-150
-100
-50
0
50
100
Output Current I
OUT
[mA]
2.2
2.5
2.8
3.1
3.4
3.7
4
4.3
4.6
4.9
5.2
-25 0 25 50 75 100 125 150 175
Time T[µs]
Output Voltage VOUT[V]
-400
-350
-300
-250
-200
-150
-100
-50
0
50
100
Output Current IOUT[mA]
Output Current 1mA↔50mA
Output Voltage
2.4
2.6
2.8
3
3.2
3.4
3.6
3.8
4
4.2
4.4
-4 0 4 8 12162024283236
Time T[µs]
Output Voltage VOUT[V]
-350
-300
-250
-200
-150
-100
-50
0
50
100
150
Output Current IOUT[mA]
Output Current
Output Voltage
Output Current 1mA↔50mA
Output Voltage
Output Current
Output Voltage
2.4
2.6
2.8
3
3.2
3.4
3.6
3.8
-4 0 4 8 12162024283236
Time T[µs]
Output Voltage VOUT[V]
-200
-150
-100
-50
0
50
100
150
Output Current IOUT[mA]
2.6
2.7
2.8
2.9
3
3.1
3.2
0 102030405060708090100
Time t[µs]
Output Voltage VOUT[V]
-150
-100
-50
0
50
100
150
Output Current IOUT[mA]
VR Output Current 50mA↔100mA
Output Voltage
0.8
1
1.2
1.4
1.6
1.8
2
2.2
-4 0 4 8 12162024283236
Time T[µs]
Output Voltage VOUT[V]
-200
-150
-100
-50
0
50
100
150
Output Current IOUT[mA]
VR Output Current 50mA↔100mA
Output Voltage
R1182x
(
Preliminar
y)
14
R1182X121X VIN=2.2V, COUT=1µF R1182X401X VIN=5.0V, COUT=0.1µF
R1182X401X VIN=5.0V, COUT=1µF
12) Turn on speed by CE pin
VOUT=1.2V COUT=0.1µF VIN=3.3V VOUT=1.2V COUT=1µF VIN=3.3V IOUT=30mA
-0.4
0
0.4
0.8
1.2
1.6
2
2.4
2.8
-10 0 10 20 30 40 50 60 70 80 90
Time T[µs]
Output Voltage VOUT[V]
-4
-3
-2
-1
0
1
2
3
4
CE Input Voltage VCE[V]
Iout=1mA
Iout=30mA
-0.4
0
0.4
0.8
1.2
1.6
2
2.4
2.8
-10 0 10 20 30 40 50 60 70 80 90
Time T[µs]
Output Voltage VOUT[V]
-4
-3
-2
-1
0
1
2
3
4
CE Input Voltage VCE[V]
0.8
1
1.2
1.4
1.6
1.8
2
2.2
-4 0 4 8 12162024283236
Time T[µs]
Output Voltage VOUT[V]
-200
-150
-100
-50
0
50
100
150
Output Current IOUT[mA]
VR Output Current 50mA↔100mA
Output Voltage
3.6
3.8
4
4.2
4.4
4.6
4.8
5
-4 0 4 8 12 16 20 24 28 32 36
Time T[µs]
Output Voltage VOUT[V]
-200
-150
-100
-50
0
50
100
150
Output Current IOUT[mA]
VR Output Current 50mA↔100mA
Output Voltage
3.6
3.8
4
4.2
4.4
4.6
4.8
5
-4 0 4 8 12162024283236
Time T[µs]
Output Voltage VOUT[V]
-200
-150
-100
-50
0
50
100
150
Output Current IOUT[mA]
VR Output Current 50mA↔100mA
Output Voltage
R1182x
(
Preliminar
y)
15
VOUT=2.8V COUT=0.1µF VIN=3.3V IOUT=30mA VOUT=2.8V COUT=1µF VIN=3.3V IOUT=30mA
VOUT=4.0V COUT=0.1µF VIN=6.0V IOUT=30mA VOUT=4.0V COUT=1µF VIN=6.0V IOUT=30mA
13) Turn-off Speed by CE pin (D version)
VOUT=1.2V COUT=0.1µF VIN=3.3V VOUT=1.2V COUT=1µF VIN=3.3V
-1
0
1
2
3
4
5
6
7
-20 0 20 40 60 80 100 120 140 160 180
Time T[µs]
Output Voltage VOUT[V]
-4
-3
-2
-1
0
1
2
3
4
CE Input Voltage VCE[V]
-1
0
1
2
3
4
5
6
7
-20 0 20 40 60 80 100 120 140 160 180
Time T[µs]
Output Voltage VOUT[V]
-4
-3
-2
-1
0
1
2
3
4
CE Input Voltage VCE[V]
-2
0
2
4
6
8
10
-20 0 20 40 60 80 100 120 140 160 180Time T[µs]
Output Voltage V
OUT
[V]
-9
-6
-3
0
3
6
9
CE Input Voltage V
CE
[V]
-2
0
2
4
6
8
10
-20 0 20 40 60 80 100 120 140 160 180
Time T[µs]
Output Voltage V
OUT
[V]
-9
-6
-3
0
3
6
9
CE Input Voltage V
CE
[V]
-0.4
0
0.4
0.8
1.2
1.6
2
2.4
2.8
-10 0 10 20 30 40 50 60 70 80 90
Time T[ms]
Output Voltage VOUT[V]
-5
-4
-3
-2
-1
0
1
2
3
4
CE Input Voltage VCE[V]
-0.4
0
0.4
0.8
1.2
1.6
2
2.4
2.8
-40 0 40 80 120 160 200 240 280 320 360
Time T[ms]
Output Voltage VOUT[V]
-5
-4
-3
-2
-1
0
1
2
3
4
CE Input Voltage VCE[V]
Iout=30mA
Iout=1mA
Iout=30mA
Iout=1mA
R1182x
(
Preliminar
y)
16
VOUT=2.8V COUT=0.1µF VIN=3.3V VOUT=2.8V COUT=1µF VIN=3.3V
VOUT=4.0V COUT=0.1µF VIN=6.0V VOUT=4.0V COUT=1µF VIN=6.0V
-1
0
1
2
3
4
5
6
7
-20 0 20 40 60 80 100 120 140 160 180
Time T[ms]
Output Voltage VOUT[V]
-4
-3
-2
-1
0
1
2
3
4
CE Input Voltage VCE[V]
Iout=30mA
Iout=1mA -1
0
1
2
3
4
5
6
7
-100 0 100 200 300 400 500 600 700 800
Time T[ms]
Output Voltage VOUT[V]
-4
-3
-2
-1
0
1
2
3
4
CE Input Voltage VCE[V]
Iout=30mA
Iout=1mA
Iout=30mA
Iout=1mA
-2
0
2
4
6
8
10
-100 0 100 200 300 400 500 600 700 800
Time T[ms]
Output Voltage VOUT[V]
-10
-5
0
5
CE Input Voltage VCE[V]
Iout=30mA
Iout=1mA
-2
0
2
4
6
8
10
-20 0 20 40 60 80 100 120 140 160 180
Time T[ms]
Output Voltage VOUT[V]
-10
-5
0
5
CE Input Voltage VCE[V]
