R1131x SERIES
Low Voltage 300mA LDO REGULATOR
NO.EA-116-061102
OUTLINE
The R1131x Series are CMOS-based low voltage regulator ICs with output voltage range from 0.8V to 3.3V.
The minimum operating voltage is 1.4V. Each of these voltage regulator ICs consists of a voltage reference unit,
an error amplifier, resistors for setting output voltage, a current limit circuit, and a chip enable circuit.
To prevent the destruction by over current, current limit circuit is included. Standby mode realizes ultra small
consumption current.
The output voltage of these ICs is internally fixed with high accuracy. Since the packages for these ICs are
SOT-23-5, SON-6, and HSON-6, high density mounting of the ICs on boards is possible.
FEATURES
•
Supply Current ..................................................Typ. 80µA (V
OUT
<
1.8V)
Typ. 60µA (V
OUT
>
1.8V)
=
•
Standby Mode ...................................................Typ. 0.1µA
•
Low Dropout Voltage.........................................Typ. 0.48V(I
OUT
=300mA
Output Voltage=1.0V Type)
Typ. 0.31V(I
OUT
=300mA
Output Voltage=1.5V Type)
Typ. 0.23V(I
OUT
=300mA
Output Voltage=3.0V Type)
•
Ripple Rejection................................................Typ. 65dB(f=1kHz)
•
Low Temperature-Drift Coefficient of Output Voltage Typ.
±100ppm/°C
•
Excellent Line Regulation .................................Typ. 0.01%/V
•
Output Voltage Accuracy...................................±2.0%
•
Packages .........................................................SOT-23-5, SON-6, HSON-6
•
Output Voltage Range.......................................0.8V to 3.3V
•
Input Voltage Range .........................................1.4V to 3.3V
•
Built-in fold-back protection circuit ....................Typ. 50mA (Current at short mode)
•
External Capacitors...........................................C
IN
=C
OUT
=Tantalum
1.0µF (V
OUT
<
1
.
0V)
C
IN
=C
OUT
=Ceramic
1.0µF (V
OUT
>
1.0V)
=
APPLICATIONS
•
Precision Voltage References.
•
Power source for electrical appliances such as cameras, VCRs and hand-held communication equipment.
•
Power source for battery-powered equipment.
1
R1131x
BLOCK DIAGRAM
R1131xxxxA
V
DD
V
OUT
V
DD
R1131xxxxB
V
OUT
Vref
Current Limit
CE
GND
CE
Vref
Current Limit
GND
R1131xxxxD
V
DD
V
OUT
Vref
Current Limit
CE
GND
SELECTION GUIDE
The output voltage, the chip enable polarity, package type, and the taping type for the ICs can be selected at
the user's request. The selection can be available by designating the part number as shown below;
R1131xxxxx-xx-x
↑ ↑ ↑↑ ↑ ↑
a b a'c d e
Code
a, a'
←Part
Number
Contents
Designation of Package Type :
R1131Nxx1x: SOT-23-5 (Mini-mold)
R1131Dxx1x: SON-6,
R1131Dxx2x: HSON-6
Setting Output Voltage (V
OUT
):
Stepwise setting with a step of 0.1V in the range of 0.8V to 3.3V is possible.
If the output=1.85V, then the code is R1131x18xx5.
If the output=2.85V, then the code is R1131x28xx5.
Designation of Chip Enable Option :
A:“L” active type.
B:“H” active type.
D:"H" active and with auto discharge function
Designation of Taping Type : TR
Refer to Taping Specifications
Designation of composition of plating:
−F
: Lead free plating (SOT-23-5,SON-6,HSON-6)
b
c
d
e
2
R1131x
PIN CONFIGURATIONS
SOT-23-5
5
4
SON-6
Top View
6 5 4
Bottom View
4 5 6
Top View
6
5
4
HSON-6
Bottom View
4
5
6
∗
(mark side)
∗
∗
∗
∗
3
2
1
1
2
3
1 2 3
3 2 1
1
2
3
PIN DESCRIPTIONS
•
SOT-23-5
Pin No.
1
2
3
4
5
Symbol
V
DD
GND
CE
or CE
•
Description
Input Pin
Ground Pin
Chip Enable Pin
No Connection
Output pin
SON-6,HSON-6
Pin No.
1
2
3
4
5
6
Symbol
V
DD
NC
V
OUT
NC
GND
CE
or CE
Description
Input Pin
No Connection
Output pin
No Connection
Ground Pin
Chip Enable Pin
NC
V
OUT
∗
Tab or Tab suspension Ieads in the
parts have
GND level.
(They are connected to the reverse side of this IC.)
Do not connect to other wires or land patterns.
ABSOLUTE MAXIMUM RATINGS
Symbol
V
IN
V
CE
V
OUT
I
OUT
P
D
Topt
Tstg
Input Voltage
Input Voltage(
CE
/CE Pin)
Output Voltage
Output Current
Power Dissipation (SOT23-5)*
1
Power Dissipation (SON-6)*
1
Power Dissipation (HSON-6)*
1
Operating Temperature Range
Storage Temperature Range
Item
Rating
6.5
−0.3
to 6.5
−0.3
to V
IN
+0.3
350
420
500
900
−40
to 85
−55
to 125
°C
°C
mW
Unit
V
V
V
mA
*1) For Power Dissipation please refer to PACKAGE INFORMATION to be described.
3
R1131x
ELECTRICAL CHARACTERISTICS
•
R1131xxxxA
Item
Output Voltage
Output Current
Load Regulation
Dropout Voltage
Supply Current
Conditions
V
IN
=
Set V
OUT
+1V
1µA
<
I
OUT
<
30mA
=
=
V
IN
−V
OUT
=1.0V
V
IN
=Set
V
OUT
+1V,
1mA
<
I
OUT
<
300mA
=
=
V
IN
=Set
V
OUT
+1V,V
OUT
<
1.8V
V
IN
=Set
V
OUT
+1V,V
OUT
Istandby Supply Current (Standby) V
IN
=V
CE
=Set
V
OUT
+1V
∆V
OUT
/
∆V
IN
RR
V
IN
∆V
OUT
/
∆Topt
I
lim
R
PU
V
CEH
V
CEL
en
Line Regulation
Ripple Rejection
Input Voltage
Output Voltage
Temperature Coefficient
Short Current Limit
CE
Pull-up Resistance
CE
Input Voltage “H”
CE
Input Voltage “L”
>
=
Topt=25°C
Symbol
V
OUT
I
OUT
∆V
OUT
/
∆I
OUT
V
DIF
I
SS1
Min.
×0.98
−30
300
<
=
Typ.
Max.
×1.02
+30
Unit
V
mV
mA
V
OUT
<
1.8V
V
OUT
1.8V
40
70
mV
Refer to the ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
80
60
0.1
0.01
65
1.4
I
OUT
=30mA
−40°C
<
Topt
=
V
OUT
=0V
1.87
1.0
0.0
BW=10Hz to 100kHz
30
<
=
111
90
1.0
0.15
µA
µA
µA
%/V
dB
1.8V
I
OUT
=30mA
V
OUT
+0.5V
<
V
IN
<
6.0V(V
OUT
>
0.9V)
=
=
<
V
IN
<
6.0V(V
OUT
<
0.9V)
1.4V
=
=
=
f=1kHz, Ripple 0.2Vp-p
V
IN
=Set
V
OUT
+1V,I
OUT
=30mA
6.0
±100
50
5.0
12.0
6.0
0.3
V
ppm
/°C
mA
MΩ
V
V
µVrms
85°C
Output Noise
4
R1131x
•
R1131xxxxB/D
Item
Output Voltage
Output Current
Load Regulation
Dropout Voltage
Supply Current
Conditions
V
IN
=Set
V
OUT
+1V
1µA
<
I
OUT
<
30mA
=
=
V
IN
−V
OUT
=1.0V
V
IN
=Set
V
OUT
+1V
1mA
<
I
OUT
<
300mA
=
=
V
IN
=Set
V
OUT
+1V,V
OUT
<
1.8V
V
IN
=Set
V
OUT
+1V,V
OUT
>
=
Topt=25°C
Symbol
V
OUT
I
OUT
∆V
OUT
/
∆I
OUT
V
DIF
I
SS1
Min.
×0.98
−30
300
<
=
Typ.
Max.
×1.02
+30
Unit
V
mV
mA
V
OUT
<
1.8V
V
OUT
1.8V
40
70
mV
Refer to the ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
80
60
0.1
0.01
65
1.4
I
OUT
=30mA
−40°C
<
Topt
=
V
OUT
=0V
1.87
1.0
0.0
BW=10Hz to 100kHz
30
60
<
=
111
90
1.0
0.15
µA
µA
µA
%/V
dB
1.8V
Istandby Supply Current (Standby)
∆V
OUT
/
∆V
IN
RR
V
IN
∆V
OUT
/
∆Topt
I
lim
R
PD
V
CEH
V
CEL
en
R
LOW
Line Regulation
Ripple Rejection
Input Voltage
Output Voltage
Temperature Coefficient
Short Current Limit
CE Pull-down Resistance
CE Input Voltage “H”
CE Input Voltage “L”
Output Noise
V
IN
=Set
V
OUT
+1V,
V
CE
=GND
I
OUT
=30mA
V
OUT
+0.5V
<
V
IN
<
6.0V(V
OUT
>
0.9V)
=
=
<
V
IN
<
6.0V(V
OUT
<
0.9V)
1.4V
=
=
=
f=1kHz, Ripple 0.2Vp-p
V
IN
=Set
V
OUT
+1V,I
OUT
=30mA
6.0
±100
50
5.0
12.0
V
IN
0.3
V
ppm
/°C
mA
MΩ
V
V
µVrms
Ω
85°C
Nch On Resistance for auto
discharge
V
CE
=0V
(applied to D version only)
•
Electrical Characteristics by Output Voltage
Output Voltage
V
OUT
(V)
0.8=V
OUT
0.9=V
OUT
1.0
1.5
2.6
<
=
<
=
<
=
Dropout Voltage V
DIF
(mV)
Condition
Typ.
620
550
I
OUT
=300mA
480
310
230
Max.
850
780
700
450
350
V
OUT
<
1.5
V
OUT
<
2.6
V
OUT
<
=
3.3
5
