NJM2830
LOW DROPOUT VOLTAGE REGULATOR
GENERAL DESCRIPTION
The NJM2830 is a 300mA 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, 1 F small decoupling
capacitor, built-in noise bypass capacitor make the NJM2830
suitable for various applications.
PACKAGE OUTLINE
NJM2830U1
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=50 Vrms typ. (Vo=3V Version)
Output capacitor with 1.0 F ceramic capacitor (Vo 5.6V)
Output Current
Io(max.)=300mA
High Precision Output
Vo 1.0%
Low Dropout Voltage
0.10V typ. (Io=100mA)
ON/OFF Control
(Active High)
Internal Thermal Overload Protection
Internal Over Current Protection
Bipolar Technology
Package Outline
SOT-89-5
PIN CONFIGURATION
5
2
4
1
2
3
1. CONTROL
2. GND
3. N.C.
4. V
OUT
5. V
IN
NJM2830U1
BLOCK DIAGRAM
V
IN
Control
Bandgap
Reference
Thermal
Protection
V
OUT
GND
Ver.2014-03-20
-1-
NJM2830
OUTPUT VOLTAGE RANK LIST
Device Name
Vout
NJM2830U1-21
NJM2830U1-25
NJM2830U1-03
NJM2830U1-33
NJM2830U1-05
NJM2830U1-57
NJM2830U1-58
NJM2830U1-06
NJM2830U1-08
NJM2830U1-85
NJM2830U1-86
NJM2830U1-09
NJM2830U1-12
NJM2830U1-15
2.1V
2.5V
3.0V
3.3V
5.0V
5.7V
5.8V
6.0V
8.0V
8.5V
8.6V
9.0V
12.0V
15.0V
The WHITE column shows applicable Voltage Rank(s)
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Ver.2014-03-20
NJM2830
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Input Voltage
V
IN
Control Voltage
V
CONT
Power Dissipation
Operating Temperature
Storage Temperature
P
D
Topr
Tstg
RATINGS
+20
+20
625(*1)
960(*2)
-40 +85
-40 +150
(Ta=25 C)
UNIT
V
V
mW
C
C
2
(*1): Mounted on glass epoxy board. (76.2 x114.3 x 1.6mm:based on EIA/JDEC standard size, 2Layers, Cu area 100mm )
(*2): Mounted on glass epoxy board. (76.2 x 114.3 x 1.6mm:based on EIA/JDEC standard, 4Layers)
( 4Layers: Applying 74.2×74.2mm inner Cu area and a thermal via hole to a board based on JEDEC standard JESD51-5)
INPUT VOLTAGE RANGE
V
IN
=+2.3V~18V (In case of Vo < 2.2V)
ELECTRICAL CHARACTERISTICS
(V
IN=
Vo+1V, C
IN
=0.1 F, Co=1.0 F (4.9V<Vo 5.5V:Co=2.2 F, 2.9V<Vo 4.9V:Co=4.7 F, Vo 2.9V: Co=10 F),Ta=25 C)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
Output Voltage
Vo
Io=30mA
-1.0%
-
+1.0%
V
-
130
180
Vo 5V Version
A
Io=0mA,
Quiescent Current
I
Q
-
145
195
5V<Vo 10V Version
A
except Icont
-
160
210
10V<Vo 15V Version
A
Quiescent Current
I
Q(OFF)
V
CONT
=0V
-
-
100
nA
at Control OFF
Output Current
Io
Vo-0.3V
300
400
mA
V
IN
=Vo+1V
Vo+6V(Vo≤12V Version)
Line Regulation
-
-
0.10
%/V
Vo/ V
IN
V
IN
=Vo+1V 18V(Vo>12V Version),
Io=30mA
Load Regulation
-
-
0.009 %/mA
Vo/ Io
Io=0 300mA
Dropout Voltage(*1)
Io=100mA
-
0.10
0.18
V
V
I O
ein=200mVrms,f=1kHz,Io=10mA,
Ripple Rejection
RR
-
75
-
dB
Vo=3V Version
Average Temperature
Coefficient of Output
-
-
Vo/ Ta Ta=0 85 C, Io=10mA
50
ppm/ C
Voltage
f=10Hz 80kHz, Io=10mA
Output Noise Voltage
V
NO
-
50
-
Vrms
Vo=3V Version
Control Current
I
CONT
V
CONT
=1.6V
3
12
A
Control Voltage for
V
CONT(ON)
1.6
-
-
V
ON-state
Control Voltage for
V
CONT(OFF)
-
-
0.6
V
OFF-state
(*3): 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.
Ver.2014-03-20
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NJM2830
TEST CIRCUIT
I
IN
V
IN
A
V
IN
V
OUT
I
OUT
0.1μF
I
CONT
NJM2830
1.0μF
*4
V
V
OUT
(ceramic)
A
V
V
CONT
CONTROL
GND
*4 4.9V<Vo 5.5V version: Co=2.2μF(ceramic)
2.9V<Vo 4.9V version: Co=4.7μF(ceramic)
Vo 2.9V version: Co=10μF(ceramic)
TYPICAL APPLICATIONS
In the case where ON/OFF Control is not required:
V
IN
V
IN
V
OUT
*5
V
OUT
1.0μF
0.1μF
R
NJM2830
CONTROL
GND
*5 4.9V<Vo 5.5V version: Co=2.2μF(ceramic)
2.9V<Vo 4.9V version: Co=4.7μF(ceramic)
Vo 2.9V version: Co=10μF(ceramic)
Connect control pin to V
IN
pin
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Ver.2014-03-20
NJM2830
In use of ON/OFF CONTROL:
V
IN
V
IN
V
OUT
*6
V
OUT
1.0μF
0.1μF
R
NJM2830
CONTROL
GND
*6 4.9V<Vo 5.5V version: Co=2.2μF(ceramic)
2.9V<Vo 4.9V version: Co=4.7μF(ceramic)
Vo 2.9V version: Co=10μF(ceramic)
State of control pin:
“H” output is enabled.
“L” or “open” output is disabled.
In the case of using a resistance "R" between V
IN
and control.
If this resistor is inserted, it can reduce the control current when the control voltage is high. The applied voltage to
control terminal should set to consider voltage drop through the resistor “R” and the minimum control voltage for
ON-state. The V
CONT (ON)
and I
CONT
have temperature dependence as shown in the "Control Current vs. Temperature"
and " Control Voltage vs. Temperature" characteristics. Therefore, the resistance "R" should be selected to consider
the temperature characteristics.
Input Capacitor C
IN
Input Capacitor C
IN
is required to prevent oscillation and reduce power supply ripple for applications when high
power supply impedance or a long power supply line. Therefore, use the recommended C
IN
value (refer to
conditions of ELECTRIC CHARACTERISTIC) or larger and should connect between GND and V
IN
as shortest path
as possible to avoid the problem.
Output Capacitor C
O
Output capacitor (C
O
) will be required for a phase compensation of the internal error amplifier.
The capacitance and the equivalent series resistance (ESR) influence to stable operation of the regulator.
Use of a smaller C
O
may cause excess output noise or oscillation of the regulator due to lack of the phase
compensation. On the other hand, Use of a larger C
O
reduces output noise and ripple output, and also
improves output transient response when rapid load change. Therefore, use the recommended C
O
value
(refer to conditions of ELECTRIC CHARACTERISTIC) or larger and should connect between GND and V
OUT
as
shortest path as possible for stable operation.
The recommended capacitance depends on the output voltage rank. Especially, low voltage regulator requires larger
C
O
value. In addition, you should consider varied characteristics of capacitor (a frequency characteristic, a
temperature characteristic, a DC bias characteristic and so on) and unevenness peculiar to a capacitor supplier
enough.
When selecting C
O,
recommend that have withstand voltage margin against output voltage and superior temperature
characteristic though this product is designed stability works with wide range ESR of capacitor including low ESR
products.
Ver.2014-03-20
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