NJM2831
LOW DROPOUT VOLTAGE REGULATOR
GENERAL DESCRIPTION
The NJM2831 is a 100mA output low dropout voltage regulator
with ON/OFF control.
Advanced Bipolar technology achieves low noise, high ripple
rejection and low quiescent current.
2.1V to 15.5V output voltage range, 1µF small decoupling
capacitor, built-in noise bypass capacitor make the NJM2831
suitable for various applications.
FEATURES
Output voltage options available
2.1
∼
15.5V (0.1V step)
High Ripple Rejection
75dB typ. (f=1kHz Vo=3V Version)
Output Noise Voltage
Vno=45µVrms typ.
Output capacitor with 1.0µF ceramic capacitor (Vo≥5.1V)
Output Current
Io(max.)=100mA
High Precision Output
Vo±1.0%
Low Dropout Voltage
0.10V typ. (Io=60mA)
ON/OFF Control
(Active High)
Internal Short Circuit Current Limit
Internal Thermal Overload Protection
Bipolar Technology
Package Outline
SOT-23-5, ESON6-G1
PIN CONFIGURATION
5
4
PACKAGE OUTLINE
NJM2831F
NJM2831KG1
1 2 3
1. CONTROL
2. GND
3. NC
4. V
OUT
5. V
IN
6
5
4
1
2
3
1
2
3
6
5
4
NJM2831F
EQUIVALENT CIRCUIT
V
IN
Control
NJM2831KG1
1. GND
2. NC
3. CONTROL
Exposed Pad
4. V
IN
（connected
to GND）
5. NC
6. V
OUT
V
OUT
Thermal
Protection
Bandgap
Reference
GND
Ver.2011-06-03
-1-
NJM2831
OUTPUT VOLTAGE
The WHITE column shows applicable Voltage Rank(s)
Device Name
NJM2831F-21
NJM2831F-22
NJM2831F-23
NJM2831F-24
NJM2831F-25
NJM2831F-26
NJM2831F-27
NJM2831F-28
NJM2831F-29
NJM2831F-03
NJM2831F-31
NJM2831F-32
NJM2831F-33
NJM2831F-34
NJM2831F-35
NJM2831F-36
NJM2831F-37
NJM2831F-38
NJM2831F-39
NJM2831F-04
Vout
2.1V
2.2V
2.3V
2.4V
2.5V
2.6V
2.7V
2.8V
2.9V
3.0V
3.1V
3.2V
3.3V
3.4V
3.5V
3.6V
3.7V
3.8V
3.9V
4.0V
Device Name
NJM2831F-41
NJM2831F-42
NJM2831F-43
NJM2831F-44
NJM2831F-45
NJM2831F-46
NJM2831F-47
NJM2831F-48
NJM2831F-49
NJM2831F-05
NJM2831F-53
NJM2831F-06
NJM2831F-64
NJM2831F-07
NJM2831F-08
NJM2831F-82
NJM2831F-85
NJM2831F-09
NJM2831F-92
NJM2831F-10
Vout
4.1V
4.2V
4.3V
4.4V
4.5V
4.6V
4.7V
4.8V
4.9V
5.0V
5.3V
6.0V
6.4V
7.0V
8.0V
8.2V
8.5V
9.0V
9.2V
10.0V
Device Name
NJM2831F-116
NJM2831F-12
NJM2831F-125
NJM2831F-13
NJM2831F-135
NJM2831F-15
NJM2831F-155
Vout
11.6V
12.0V
12.5V
13.0V
13.5V
15.0V
15.5V
ESON Type Available Voltage Rank(s)
Device Name
NJM2831KG1-33
Vout
3.3V
Device Name
NJM2831KG1-52
Vout
5.2V
Device Name
Vout
-2-
Ver.2011-06-03
NJM2831
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Input Voltage
V
IN
Control Voltage
V
CONT
(Ta=25°C)
UNIT
V
V
mW
420(*4)
ESON6
1135(*5)
Operating Temperature
Topr
-40∼+85
°C
Storage Temperature
Tstg
-40∼+150
°C
(*1): When input voltage is less than +20V, the absolute maximum control voltage is equal to the input voltage.
(*2): Mounted on glass epoxy board based on EIA/JEDEC. (114.3x76.2x1.6mm: 2Layers)
(*3): Device itself.
(*4): Mounted on glass epoxy board based on EIA/JEDEC STANDARD.
(101.5×114.5×1.6mm: 2Layers FR-4, copper area 100mm
2
)
(*5): Mounted on glass epoxy board based on EIA/JEDEC STANDARD. (101.5
×
114.5
×
1.6mm: 4Layers FR-4,
Internal foil area size: 99.5
×
99.5mm, Applying a thermal via hole to a board based on JEDEC standard JESD51-5)
ELECTRICAL CHARACTERISTICS
(V
IN
= Vo+1V, C
IN
=0.1µF, Co=1.0µF (2.8V<Vo≤5.4V:Co=2.2µF, Vo≤2.8V: Co=4.7µF),Ta=25°C)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
Output Voltage
Vo
Io=30mA
-1.0%
Vo≤5V Version
−
Io=0mA,
Quiescent Current
I
Q
5V<Vo≤10V Version
−
except Icont
10V<Vo≤15V Version
−
Quiescent Current
I
Q(OFF)
V
CONT
=0V
−
at Control OFF
Output Current
Io
Vo-0.3V
100
V
IN
=Vo+1V
∼
Vo+6V(Vo≤12V Version)
Line Regulation
−
∆Vo/∆V
IN
V
IN
=Vo+1V
∼
18V(Vo>12V Version),
Io=30mA
Load Regulation
∆Vo/∆Io
Io=0
∼
60mA
−
Io=60mA
Dropout Voltage(*4)
−
∆V
I−O
ein=200mVrms,f=1kHz,Io=10mA,
Ripple Rejection
RR
−
Vo=3V Version
Average Temperature
Coefficient of Output
∆Vo/∆Ta
Ta=0
∼
85°C, Io=10mA
−
Voltage
f=10Hz
∼
80kHz, Io=10mA
Output Noise Voltage
V
NO
−
Vo=3V Version
Control Current
Icont
V
CONT
=1.6V
Control Voltage for
V
CONT(ON)
1.6
ON-state
Control Voltage for
V
CONT(OFF)
−
OFF-state
Input Voltage
V
IN
−
(*4): The above specification is a common specification for all output voltages.
Therefore, it may be different from the individual specification for a specific output voltage.
Power Dissipation
P
D
RATINGS
+20
+20(*1)
500(*2)
SOT-23-5
250(*3)
TYP.
−
120
135
150
−
130
−
−
0.10
75
±
50
45
3
−
−
−
MAX.
+1.0%
180
195
210
100
−
0.10
0.03
0.18
−
−
−
12
−
0.6
18
UNIT
V
µA
µA
µA
nA
mA
%/V
%/mA
V
dB
ppm/
°C
µVrms
µA
V
V
V
Ver.2011-06-03
-3-
NJM2831
TEST CIRCUIT
A
V
IN
I
IN
V
IN
V
OUT
0.1µF
NJM2831
1.0µF
(ceramic)
*5
I
OUT
V
V
OUT
A
V
V
CONT
I
CONT
CONTROL
GND
*5
2.8V<Vo≤5.4V version: Co=2.2µF(ceramic)
Vo≤2.8V version: Co=4.7µF(ceramic)
TYPICAL APPLICATIONS
1
In the case where ON/OFF Control is not required:
V
IN
0.1µF
R
V
IN
V
OUT
V
OUT
NJM2831
1.0µF
*6
CONTROL
GND
*6
2.8V<Vo≤5.4V version: Co=2.2µF
Vo≤2.8V version: Co=4.7µF
Connect control terminal to V
IN
terminal
-4-
Ver.2011-06-03
NJM2831
2
In use of ON/OFF CONTROL:
V
IN
V
IN
V
OUT
V
OUT
0.1µF
R
NJM2831
1.0µF
*6
CONTROL
GND
*6 2.8V<Vo≤5.4V version: Co=2.2µF
Vo≤2.8V version: Co=4.7µF
State of control terminal:
•“H”→
output is enabled.
•“L”
or “open”
→
output is disabled.
In the case of using a resistance "R" between V
IN
and control.
The current flow into the control terminal while the IC is ON state (I
CONT
) can be reduced when a pull up resistance
"R" is inserted between V
IN
and the control terminal.
The minimum control voltage for ON state (V
CONT (ON)
) is increased due to the voltage drop caused by I
CONT
and the
resistance "R". The I
CONT
is temperature dependence as shown in the "Control Current vs. Temperature"
characteristics. Therefore, the resistance "R" should be carefully selected to ensure the control voltage exceeds the
V
CONT (ON)
over the required temperature range.
Ver.2011-06-03
-5-
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