150mA LDO REGULATOR
R1180x SERIES
OUTLINE
NO. EA-105-0504
The R1180x Series are CMOS-based voltage regulator ICs with high output voltage accuracy, extremely low
supply current, and low ON-resistance. 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. B version has a chip enable pin, therefore ultra-low
consumption current standby mode can be realized with the pin.
Since the packages for these ICs are SOT-23-5 (R1180N Series), SC-82AB (R1180Q Series), and SON1612-6
(R1180D Series), therefore high density mounting of the ICs on boards is possible.
FEATURES
Low Supply Current ..........................................Typ. 1µA(Except the current through CE pull-down circuit)
Standby Mode ...................................................Typ. 0.1µA
Low Dropout Voltage.........................................Typ. 0.25V (I
OUT
=150mA
3.0V Output type)
Low Temperature-Drift Coefficient of Output Voltage Typ.
±100ppm/°C
Good Line Regulation .......................................Typ. 0.05%/V
High Output Voltage Accuracy ..........................±2.0%
Small Packages ..............................................SOT-23-5(R1180N)/SC-82AB(R1180Q)/
SON1612-6 (R1180D)
•
Output Voltage ..................................................Stepwise setting with a step of 0.1V in the range of 1.2V to
3.6V is possible
•
Built-in Fold Back Protection Circuit .................Typ. 40mA (Current at short mode)
•
Ceramic capacitors are recommended to be used with this IC 0.1µF
•
•
•
•
•
•
•
APPLICATIONS
•
Stable voltage reference.
•
Power source for electrical appliances such as cameras, VCRs and camcorders.
•
Power source for battery-powered equipment.
1
R1180x
BLOCK DIAGRAMS
R1180xxx1B
V
DD
V
OUT
V
DD
R1180xxx1C
V
OUT
Vref
Vref
Current Limit
Current Limit
CE
GND
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:
R1180xxx1x-TR
↑ ↑
a b
Code
a
b
c
d
↑
c
↑
d
←Part
Number
Contents
Designation of Package Type :
N: SOT-23-5 (Mini mold)
Q: SC-82AB (Super-mini mold) D: SON1612-6
Setting Output Voltage (V
OUT
) :
Stepwise setting with a step of 0.1V in the range of 1.2V to 3.6V is possible.
Designation of Active Type :
B : active high type
C : without chip enable circuit
Designation of Taping Type :
Ex. TR (refer to Taping Specifications; TR type is the standard direction.)
PIN CONFIGURATION
SOT-23-5
5
4
4
SC-82AB
3
SON1612-6
654
123
(mark side)
(mark side)
1
2
1
2
3
2
R1180x
PIN DESCRIPTIONS
•
SC-82AB (R1180Qxx1B/C)
Pin No
1
2
3
4
Symbol
CE or NC
GND
V
OUT
V
DD
Pin Description
Chip Enable Pin or No Connection
Ground Pin
Output pin
Input Pin
•
SOT-23-5 (R1180Nxx1B/C)
Pin No
1
2
3
4
5
Symbol
V
DD
GND
CE or NC
NC
V
OUT
Input Pin
Ground Pin
Chip Enable Pin or No Connection
No Connection
Output pin
Pin Description
•
SON1612-6 (R1180Dxx1B/C)
Pin No
1
2
3
4
5
6
Symbol
V
DD
GND
V
OUT
NC
GND
CE or NC
Input Pin
Ground Pin
Output pin
No Connection
Ground Pin
Chip Enable Pin or No Connection
Pin Description
3
R1180x
ABSOLUTE MAXIMUM RATINGS
Symbol
V
IN
V
CE
V
OUT
I
OUT
P
D
Input Voltage
Input Voltage(CE Pin)
Output Voltage
Output Current
Power Dissipation(SC82-AB)
Power Dissipation(SOT23-5)
Power Dissipation(SON1612-6)
Topt
Tstg
Operating Temperature Range
Storage Temperature Range
Item
Rating
6.5
6.5
−0.3
~ V
IN
+0.3
180
150
250
500
∗
Note1
−40
~ 85
−55
~ 125
°C
°C
mW
Unit
V
V
V
mA
∗Note
1: This specification is at mounted on board.
P
D
depends on conditions of mounting on board. This specification is based on the measurement at the
condition below:
∗Measurement
Conditions
Environment: Mounted on board (Wind velocity 0m/s)
Board Material: FR-4 (2-layer)
Board dimensions : 40mm
×
40mm
×
t1.6mm
Copper Area : 50%
700
600
500
P
D
(mW)
400
300
200
100
0
0
25
50
75
100
125
Temperature Topt( )
4
R1180x
ELECTRICAL CHARACTERISTICS
•
R1180xxx1B/R1180xxx1C
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
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”
Conditions
V
IN
=
Set V
OUT
+1V
1µA
<
I
OUT
<
30mA
=
=
V
IN
- V
OUT
=
1.0V
Min.
V
OUT
×0.980
150
Typ.
Max.
V
OUT
×1.020
Unit
V
mA
V
IN
=
Set V
OUT
+1V
20
40
mV
1µA
<
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(B version)
Set V
OUT
+0.5V
I
OUT
=
30mA
I
OUT
=
30mA
−40°C
<
Topt
=
V
OUT
=
0V
(R1180xxx1B)
(R1180xxx1B)
(R1180xxx1B)
1.2
0.0
<
=
1.0
0.1
1.5
1.0
0.20
6.0
µA
µA
%/V
V
ppm
/°C
mA
µA
V
IN
<
=
6.0V
1.7
0.05
<
=
85°C
±100
40
0.35
6.0
0.3
V
V
•
ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
Topt
=
25°C
Dropout Voltage
Output Voltage V
OUT
(V)
Condition
1.2
1.3
1.4
1.5
1.7
1.9
2.1
2.8
<
=
<
=
<
=
<
=
<
=
<
=
<
=
<
=
V
DIF
(V)
Typ.
0.85
0.75
0.65
I
OUT
=
150mA
0.60
0.50
0.40
0.35
0.25
Max.
1.20
1.10
1.00
0.90
0.75
0.65
0.55
0.40
V
OUT
< 1.3
V
OUT
< 1.4
V
OUT
< 1.5
V
OUT
< 1.7
V
OUT
< 1.9
V
OUT
< 2.1
V
OUT
< 2.8
V
OUT
<
=
3.6
5
