R1182x SERIES
Seamless Low Supply Current 150mA LDO REGULATOR
NO.EA-133-071207
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 R1182x 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 in all the load range by our original seamless
technology.
Since the packages for these ICs are SOT-23-5 and ultra small DFN(PLP)1616-6, high density mounting of
the ICs on boards is possible.
FEATURES
•
•
•
•
•
•
•
•
•
•
•
Supply Current ..................................................Typ. 3µA (Except the current through CE pull-down circuit)
Standby Current ................................................Typ. 0.1µA
Input Voltage Range ........................................ 1.5V to 6.0V
Output Voltage ..................................................1.2V to 4.0V
Dropout Voltage ................................................Typ. 0.23V (I
OUT
=150mA,
3.0V Output type)
Output Voltage Accuracy...................................±1.0% (V
OUT
>1.5V)
±15mV
(V
OUT
<
1.5V)
=
Temperature-Drift Coefficient of Output Voltage .... Typ.
±100ppm/°C
Line Regulation .................................................Typ. 0.1%/V
Packages .........................................................SOT-23-5, DFN(PLP)1616-6
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)
APPLICATIONS
•
Stable voltage reference.
•
Power source for electrical appliances such as cameras, camcorders, mobile communication equipment.
•
Power source for battery-powered equipment.
1
R1182x
BLOCK DIAGRAMS
R1182xxx1B
V
DD
V
OUT
V
DD
R1182xxx1D
V
OUT
Vref
Current Limit
Vref
Current Limit
CE
GND
CE
GND
SELECTION GUIDE
The output voltage, auto discharge function*, 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-xx-x
↑ ↑
a b
Code
a
↑ ↑ ↑
c d e
←Part
Number
Contents
Designation of Package Type :
N: SOT-23-5
K: DFN(PLP)1616-6
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 1.25V output type: R1182x121x5, 1.85V output type: R1182x181x5,
2.85V output type: R1182x281x5.
Designation of Mask Option
B: active high, without auto discharge function* at OFF state.
D: active high, with auto discharge function* at OFF state.
Designation of Taping Type :
Ex. TR (refer to Taping Specifications; TR type is the standard direction.)
Designation of composition of pin plating:
-F: Lead free plating (SOT-23-5)
None: Au plating (DFN(PLP)1616-6)
b
c
d
e
*) When the mode is into standby with CE signal, auto discharge transistor turns on, and it makes the turn-off
speed faster than normal type.
2
R1182x
PIN CONFIGURATIONS
SOT-23-5
5
4
DFN(PLP)1616-6
Top View
6
5
4
Bottom View
4
5
6
(Mark side)
∗
1
2
3
1
2
3
3
2
1
PIN DESCRIPTIONS
•
SOT-23-5
Pin No
1
2
3
4
5
Symbol
GND
V
DD
V
OUT
NC
CE
Pin Description
Ground Pin
Input Pin
Output pin
No Connection
Chip Enable Pin
•
DFN(PLP)1616-6
Pin No
1
2
3
4
5
6
Symbol
V
DD
GND
CE
NC
NC
V
OUT
Pin Description
Input Pin
Ground Pin
Chip Enable Pin
No Connection
No Connection
Output pin
∗
Tab in the
parts have GND level.
(They are connected to the back side of this IC.)
Do not connect to other wires or land patterns.
3
R1182x
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 (SOT-23-5)
Operating Temperature Range
Storage Temperature Range
*
*
Item
Rating
6.5
−0.3
to 6.5
−0.3
to V
IN
+0.3
200
420
560
−40
to 85
−55
to 125
Unit
V
V
V
mA
mW
°C
°C
Power Dissipation (DFN(PLP)1616-6)
∗)
For Power Dissipation, please refer to PACKAGE INFORMATION to be described.
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum ratings are threshold limit values that must not be exceeded ever for an instant under
any conditions. Moreover, such values for any two items must not be reached simultaneously. Operation
above these absolute maximum ratings may cause degradation or permanent damage to the device.
These are stress ratings only and do not necessarily imply functional operation below these limits.
4
R1182x
ELECTRICAL CHARACTERISTICS
•
R1182xxx1B/D
Topt=25°C
Symbol
V
OUT
I
OUT
∆V
OUT
/
∆I
OUT
Item
Output Voltage
Output Current
Load Regulation
Conditions
V
IN
=Set
V
OUT
+1V
I
OUT
=1mA
V
IN
−V
OUT
=1.0V
V
IN
=Set
V
OUT
+1V
1mA
<
I
OUT
<
150mA
=
=
1.2
1.3
1.4
<
=
<
=
<
=
<
=
<
=
<
=
Min.
×0.99
−15
150
<
=
Typ.
Max.
×1.01
+15
Unit
V
mV
mA
V
OUT
> 1.5V
V
OUT
1.5V
30
V
OUT
< 1.3
V
OUT
< 1.4
V
OUT
< 1.5
V
OUT
< 2.0
V
OUT
< 2.8
V
OUT
< 4.0
0.60
0.53
0.46
0.43
0.31
0.23
0.19
3.0
0.1
0.1
1.5
80
0.82
0.75
0.67
0.60
0.40
0.29
0.23
7.0
1.0
0.3
6.0
mV
V
DIF
Dropout Voltage
I
OUT
=150mA
1.5
2.0
2.8
V
V
OUT
=4.0
I
SS
I
standby
∆V
OUT
/
∆V
IN
V
IN
∆V
OUT
/
∆T
opt
I
lim
I
PD
V
CEH
V
CEL
en
R
LOW
Supply Current
Standby Current
Line Regulation
Input Voltage
Output Voltage
Temperature Coefficient
Short Current Limit
CE Pull-down Current
CE Input Voltage ”H”
CE Input Voltage ”L”
Output Noise
Nch Tr. On resistance for
auto discharge function
(Only applied to D Version)
BW=10Hz to 100kHz
V
CE
=0V
I
OUT
=30mA
−40°C
<
T
opt
=
V
OUT
=0V
0.05
1.0
0
<
=
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
<
=
µA
µA
%/V
V
ppm/°C
mA
V
IN
<
=
6.0V
85°C
±100
50
0.30
0.55
6.0
0.4
30
50
µA
V
V
µVrms
Ω
5
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