NJM2835
LOW DROPOUT VOLTAGE REGULATOR
GENERAL DESCRIPTION
The NJM2835 is a 500mA output low dropout voltage
regulator.
Advanced Bipolar technology achieves low noise, high
ripple rejection and high supply voltage.
2.1V to 15.5V output voltage range, 2.2µF small
decoupling capacitor, built-in noise bypass capacitor make
the NJM2835 suitable for various applications.
FEATURES
Output voltage options available 2.1∼15.5V
High Ripple Rejection
75dB typ. (f=1kHz,Vo=3V Version)
Output Noise Voltage
Vno=45µVrms typ.
Output capacitor with 2.2µF ceramic capacitor (Vo≥5.1V)
Output Current
Io(max.)=500mA
High Precision Output
Vo±1.0%
Low Dropout Voltage
0.18V typ. (Io=300mA)
Internal Thermal Overload Protection
Internal Over Current Protection
Bipolar Technology
Package Outline
TO-252-3
PIN CONFIGURATION
2
PACKAGE OUTLINE
NJM2835DL1
PIN FUNCTION
1.V
IN
2.GND
3.V
OUT
3
1
NJM2835DL1
EQUIVALENT CIRCUIT
V
IN
Thermal
Protection
Bandgap
Reference
V
OUT
GND
NJM2835
OUTPUT VOLTAGE RANK LIST
Device Name
V
OUT
Device Name
NJM2835DL1-21
2.1V
NJM2835DL1-85
NJM2835DL1-03
3.0V
NJM2835DL1-12
NJM2835DL1-05
5.0V
NJM2835DL1-15
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Input Voltage
V
IN
Power Dissipation
Operating Temperature
Storage Temperature
P
D
Topr
Tstg
V
OUT
8.5V
12.0V
15.0V
(Ta=25°C)
UNIT
V
W
°C
°C
RATINGS
+20
10(Tc≤25°C)
1(Ta≤25°C)
-40
∼
+85
-40
∼
+150
ELECTRICAL CHARACTERISTICS
(V
IN=
Vo+1V, C
IN
=0.33µF, Co=2.2µF (2.9V＜Vo≦5V:Co=4.7μF,Vo≦2.9V:Co=10μF),Ta=25°C)
PARAMETER
SYMBOL
TEST CONDITION
MIN
TYP MAX
Output Voltage
Vo
Io=30mA
-1.0%
-
+1.0%
-
200
300
Vo≤5V Version
5V<Vo≤10V
-
215
315
Quiescent Current
I
Q
Io=0mA
Version
10V<Vo≤15V
-
230
330
Version
Output Current
Io
Vo-0.3V
500
650
-
V
IN
=Vo+1V
∼
Vo+6V(Vo≤12V),
-
-
0.10
Line Regulation
∆Vo/∆V
IN
V
IN
=Vo+1V
∼
18V(Vo>12V),
Io=30mA
Load Regulation
-
-
0.007
∆Vo/∆Io
Io=0
∼
500mA
Io=300mA
-
0.18
0.28
Dropout Voltage
∆V
I-O
ein=200mVrms,f=1kHz,Io=10mA
Ripple Rejection
RR
-
75
-
Vo=3V Version
Average Temperature
-
-
Coefficient of Output
∆Vo/∆Ta
Ta=0
∼
85°C, Io=10mA
±
50
Voltage
f=10Hz
∼
80kHz, Io=10mA,
Output Noise Voltage
V
NO
-
45
-
Vo=3V Version
Input Voltage
V
IN
-
-
18
(*1): 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.
UNIT
V
µA
µA
µA
mA
%/V
%/mA
V
dB
ppm/°C
µVrms
V
NJM2835
TEST CIRCUIT
A
V
IN
*2
I
IN
V
IN
V
OUT
NJM2835
2.2
µ
F*2
0.33
µ
F
I
OUT
V
V
OUT
GND
(ceramic)
2.9<Vo≤5.0V version : Co=4.7µF(ceramic)
Vo≤2.9V version : Co=10µF(ceramic)
TYPICAL APPLICATION
V
IN
0.33
µ
F
*3
2.9<Vo
≤
5.0V version : Co=4.7µF
Vo
≤
2.9V version : Co=10µF
V
IN
V
OUT
V
OUT
2.2
µ
F*3
NJM2835
GND
Input Capacitance C
IN
Input Capacitance C
IN
is required to prevent oscillation and reduce power supply ripple for applications
with high power supply impedance or a long power supply line.
Use the C
IN
value of 0.33µF greater to avoid the problem.
C
IN
should connect between GND and V
IN
as short as possible.
NJM2835
TYPICAL CHARACTERISTICS
●DC
CHARACTERISTICS (3V Version)
3.2
NJM2835_3.0V
Output Voltage vs. Input Voltage
@:Ta=25 C
Co=4.7µF
(Ceramic)
o
4
NJM2835_3.0V
Output Voltage vs. Output Current
3.5
3.1
3
Output Voltage : Vo(V)
Output Voltage : Vo(V)
3
Io=0A
2.5
2
2.9
1.5
Io=100mA
2.8
1
@:Ta=25 C
V
IN
=4.0V
Co=4.7µF
(Ceramic)
0
200
400
600
800
1000
o
0.5
Io=300mA
2.7
2.7
2.8
2.9
3
3.1
3.2
3.3
3.4
0
Input Voltage : V
IN
(V)
Output Current : Io(mA)
NJM2835_3.0V
Ground Pin Current v.s. Output Current
30
@:Ta=25 C
V
IN
=4.0V
Co=4.7µF(Ceramic)
o
0.35
NJM2835_3.0V
Dropout Voltage vs. Output Current
@:Ta=25
o
C
Co=4.7µF
(Ceramic)
25
0.3
Ground Pin Current :
GND
(mA)
I
20
Dropout Voltage:dV
I-O
(V)
0.25
0.2
15
0.15
10
0.1
5
0.05
0
0
100
200
300
400
500
600
700
0
0
100
200
300
400
500
600
700
Output Current : I
O
(mA)
Output Current:Io(mA)
0
NJM2835_3.0V
Load Regulation vs. Output Current
1500
1350
1200
NJM2835_3.0V
Peak Output Current vs. Input Voltage
-10
Load Regulation : dVo/dIo(mV)
-20
Peak Output Current : Io (mA)
MAX
1050
900
750
600
450
300
150
0
@:Ta=25 C
Co=4.7µF
(Ceramic)
4
6
8
10
12
14
16
18
o
-30
-40
-50
-60
@:Ta=25 C
V
IN
=4.0V
Co=4.7µF(Ceramic)
0
100
200
300
400
500
600
700
o
-70
-80
Output Current : Io(mA)
Input Voltage : V
IN
(V)
NJM2835
●DC
CHARACTERISTICS (3V Version)
NJM2835_3.0V
Quiescent Current v.s. Input Voltage
2000
@:Ta=25 C
Output is open.
Co=4.7µF
(Ceramic)
1500
o
Quiescent Current : I (uA)
Q
1000
500
0
0
4
8
12
16
Input Voltage : V
IN
(V)
●AC
CHARACTERISTICS (3V Version)
100
NJM2835_3.0V
Output Noise Voltage vs. Output Current
@:Ta=25 C
V
IN
=4.0V
LPF:80kHz
Co=4.7µF(Ceramic)
o
NJM2835_3.0V
Ripple Rejection Ratio v.s. Frequency
100
Io=10mA
Io=0mA
90
Output Noise Voltage : Vn(uVrms)
Ripple Rejection Ratio : RR (dB)
80
80
60
70
Io=30mA
60
40
50
40
@:Ta=25
o
C
V
IN
=4.0V
ein=200mVrms
Co=4.7µF
(Ceramic)
10
10
100
100
1k
1000
4
10k
10
5
100k
10
20
30
0
0.001
0.01
0.1
1
10
100
1000
20
Output Current : Io(mA)
Frequency : f (Hz)
NJM2835_3.0V
Ripple Rejection vs. Output Current
100
NJM2835_3.0V
Equivalent Serise Resistance vs. Output Current
100
@:Ta=25
o
C
V
IN
=4V
Co=4.7µF
(Ceramic)
10
90
Ripple Rejection : RR (dB)
80
70
f=10kHz
60
Equivalent Serise Resistance : ESR(
Ω)
f=1kHz
1
STABLE REGION
50
40
@:Ta=25 C
V
IN
=4.0V
ein=200mVrms
Co=4.7µF(Ceramic)
0.01
0.1
1
10
100
1000
o
0.1
30
20
0.001
0.02
1u
10u
100u
1m
10m
100m
700m
Output Current : Io(mA)
Output Current : Io(A)
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