Low Voltage 150mA LDO REGULATOR
R1182x SERIES
OUTLINE
Preliminary
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 (I
OUT
=150mA
3.0V Output type)
Input Voltage Range ........................................... 1.5V to 6.0V
High Output Voltage Accuracy..........................
±1.0%
(V
OUT
≥
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 (V
OUT
=1.5V, I
OUT
=30mA)
.............................................................................. Typ. 40dB at 10kHz (V
OUT
=1.5V, I
OUT
=30mA)
APPLICATIONS
•
Stable voltage reference.
•
Power source for electrical appliances such as cameras, camcorders, mobile communication equipment.
•
Power source for battery-powered equipment.
1
R1182x (Preliminary)
BLOCK DIAGRAMS
R1182xxx1B
V
DD
V
OUT
V
DD
R1182xxx1D
V
OUT
-
+
Vref
Vref
-
+
GND
CE
Current
CE
Current
GND
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
↑ ↑
a b
Code
a
↑
c
↑
d
←Part
Number
Contents
Designation of Package Type :
N: SOT-23-5 (Mini mold)
K: PLP1616-6
Setting Output Voltage (V
OUT
) :
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
Designation of Active Type :
B : active high type
D : active high with auto discharge function at off mode
Designation of Taping Type :
Ex. TR (refer to Taping Specifications; TR type is the standard direction.)
b
c
d
2
R1182x(Preliminary)
PIN CONFIGURATION
z
SOT-23-5
5
4
z
PLP1616-6
6
5
4
1.6
(mark side)
(mark side)
1
1
2
3
2
1.6
3
H:0.60
PIN DESCRIPTIONS
•
SOT-23-5 (R1182Nxx1B/D)
Pin No
1
2
3
4
5
Symbol
GND
V
DD
V
OUT
NC
CE
Ground Pin
Input Pin
Output pin
No Connection
Chip Enable Pin
Pin Description
•
PLP1616-6 (R1180Kxx1B/D)
Pin No
1
2
3
4
5
6
Symbol
V
DD
GND
CE
NC
NC
V
OUT
Input Pin
Ground Pin
Chip Enable Pin
No Connection
No Connection
Output pin
Pin Description
3
R1182x (Preliminary)
ABSOLUTE MAXIMUM RATINGS
Symbol
V
IN
V
CE
V
OUT
I
OUT
P
D
Topt
Tstg
Input Voltage
Input Voltage (CE Pin)
Output Voltage
Output Current
Power Dissipation (SOT23-5)
Power Dissipation(PLP1616-6)
Operating Temperature Range
Storage Temperature Range
Item
Rating
6.5
-0.3 to 6.5
−0.3
~ V
IN
+0.3
200
250
T.B.D.
−40
~ 85
−55
~ 125
Unit
V
V
V
mA
mW
°C
°C
ELECTRICAL CHARACTERISTICS
•
R1182xxx1B/R1182xxx1D
Topt=25°C
Symbol
V
OUT
I
OUT
∆V
OUT
/∆I
OUT
V
DIF
I
SS
Istandby
∆V
OUT
/∆V
IN
V
IN
∆V
OUT
/∆T
I
LIM
I
PD
V
CEH
V
CEL
en
Rn
Item
Output Voltage
Output Current
Load Regulation
Dropout Voltage
Supply Current
Supply Current (Standby)
Line Regulation
Input Voltage
Output Voltage
Temperature Coefficient
Short Current Limit
CE Pull-down Constant
Current
CE Input Voltage “H”
CE Input Voltage “L”
Output Noise
Nch Tr. On resistance for
2)
auto discharge function*
Conditions
V
IN
=
Set V
OUT
+1V
I
OUT
=1mA
V
IN
- V
OUT
=
1.0V
Min.
V
OUT
×0.99
(-15mV)
Typ.
Max.
V
OUT
×1.01
(+15mV)
Unit
V
mA
*1)
*1)
150
V
IN
=
Set V
OUT
+1V
30
80
mV
1mA
<
I
OUT
<
150mA
=
=
Refer to the ELECTRICAL CHARACTERISTICS by OUTPUT
VOLTAGE
V
IN
=
Set V
OUT
+1V,
I
OUT
=0mA
V
IN
=
Set V
OUT
+1V
V
CE
=
GND
Set V
OUT
+0.5V
I
OUT
=
30mA
I
OUT
=
30mA
−40°C
<
Topt
=
V
OUT
=
0V
0.05
1.0
0.0
BW=10Hz to 100kHz
CE=”L”
30
50
<
=
3.0
0.1
7.0
1.0
0.3
6.0
µA
µA
%/V
V
ppm
/°C
mA
V
IN
<
=
6.0V
1.5
0.1
<
=
85°C
±100
50
0.30
0.55
6.0
0.4
µA
V
V
µVrms
Ω
*1) V
OUT
≤1.5V,
the tolerance is
±15mV.
*2) Only applied to D version.
4
R1182x(Preliminary)
•
ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
Topt
=
25°C
Dropout Voltage
Output Voltage V
OUT
(V)
Condition
1.2
1.3
1.4
1.5
2.0
2.8
2.1
<
=
<
=
<
=
<
=
<
=
<
=
<
=
V
DIF
(V)
Typ.
0.60
0.53
0.46
I
OUT
=
150mA
0.43
0.31
0.23
0.19
0.25
Max.
0.82
0.75
0.67
0.60
0.40
0.29
0.23
0.40
V
OUT
< 1.3
V
OUT
< 1.4
V
OUT
< 1.5
V
OUT
< 2.0
V
OUT
< 2.8
V
OUT
< 4.0
V
OUT
< 2.8
V
OUT
=4.0
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 V
DD
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 V
DD
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
OUT
C2
V
OUT
V
DD
IN
C1
R1182X
SERIES
GND
CE
(External components example; Output capacitor: Ceramic type
Input capacitor: Ceramic type
Output Capacitor: 0.1µF: Kyocera CM05B104K06AB
Murata GRM155B31C104KA87B
1.0µF: Kyocera CM05X5R105K06AB
5
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