NJM2886
LOW DROPOUT VOLTAGE REGULATOR
GENERAL DESCRIPTION
The NJM2886 is low dropout voltage regulator designed for
portable application.
Advanced Bipolar technology achieves low noise, high ripple
rejection and low quiescent current.
FEATURES
High Ripple Rejection
75dB typ. (f=1kHz,Vo=3V Version)
Output Noise Voltage
Vno=45µVrms typ.
Output capacitor with 2.2µF ceramic capacitor (Vo≥2.7V)
Output Current
Io(max.)=500mA
High Precision Output
Vo±1.0%
Low Dropout Voltage
0.18V typ. (Io=300mA)
ON/OFF Contorol
Internal Short Circuit Current Limit
Internal Thermal Overload Protection
Bipolar Technology
Package Outline
TO-252-5(DL3)
PIN CONFIGURATION
3
PACKAGE OUTLINE
NJM2886DL3
123 45
NJM2886DL3
EQUIVALENT CIRCUIT
V
IN
Control
PIN FUNCTION
1.CONTROL
2.V
IN
3.GND
4.V
OUT
5.NC
V
OUT
Thermal
Protection
Bandgap
Reference
GND
Ver.2006-04-07
-1-
NJM2886
OUTPUT VOLTAGE RANK LIST
Device Name
V
OUT
Device Name
NJM2886DL*-15
1.5V
NJM2886DL*-28
NJM2886DL*-18
1.8V
NJM2886DL*-03
NJM2886DL*-19
1.9V
NJM2886DL*-33
NJM2886DL*-21
2.1V
NJM2886DL*-35
NJM2886DL*-25
2.5V
NJM2886DL*-38
NJM2886DL*-26
2.6V
NJM2886DL*-05
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Input Voltage
V
IN
Control Voltae
V
CONT
V
OUT
2.8V
3.0V
3.3V
3.5V
3.8V
5.0V
(Ta=25°C)
UNIT
V
V
RATINGS
+14
+14(*1)
8(Tc=25°C)
Power Dissipation
P
D
W
0.8(Ta≤25°C)
Operating Temperature
Topr
−40 ∼
+85
°C
Storage Temperature
Tstg
−40 ∼
+125
°C
(*1): When input voltage is less than +14V, the absolute maximum control voltage is equal to the input voltage.
Operating Voltage
V
IN
=+2.3V
∼
+14.0V (In case of Vo<2.1V)
ELECTRICAL CHARACTERISTICS
(V
IN
=Vo+1V, C
IN
=0.33µF, Co=2.2µF: Vo≥2.7V (Co=4.7µF: 1.7V<Vo≤2.6V , Co=10µF: Vo≤1.7V), Ta=25°C)
PARAMETER
SYMBOL
TEST CONDITION
MIN. TYP. MAX. UNIT
Output Voltage
Vo
Io=30mA
-1.0%
+1.0%
V
−
Quiescent Current
I
Q
Io=0mA
200
300
µA
−
Quiescent Current
V
CONT
=0V
100
nA
I
Q(OFF)
−
−
at Control OFF
Output Current
Io
Vo-0.3V
500
650
-
mA
Line Regulation
0.10
%/V
∆Vo/∆V
IN
V
IN
=Vo+1V
∼
Vo+6.0V, Io=30mA
−
−
Load Regulation
0.03 %/mA
∆Vo/∆Io
Io=0
∼
500mA
−
−
Io=300mA
0.18
0.28
V
Dropout Voltage(*2)
∆V
I−O
−
ein=200mVrms,f=1kHz, Io=10mA
Ripple Rejection
RR
75
dB
−
−
Vo=3.0V 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
45
µVrms
−
−
Vo=3.0V Version
Control Voltage for
1.6
V
V
CONT(ON)
−
−
ON-state
Control Voltage for
0.6
V
V
CONT(OFF)
−
−
OFF-state
(*2): The output voltage excludes under 2.1V.
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.
-2-
Ver.2006-04-07
NJM2886
POWER DISSIPATION VS. AMBIENT TEMPERATURE
NJU2886DL3
(Topr=-40~+85°C,Tj=125°C,P
D
=8W(T
C
=25°C),P
D
=0.8W(Ta≤25°C))
10
Power Dissipation P
D
(W)
8
6
4
2
0
-50
∞
Heat Sink
θ
HS
=5°C/W
θ
HS
=10°C/W
θ
HS
=20°C/W
Without Heat Sink
-25
0
25
50
75
100
Ambient Temperature Ta(°C)
TEST CIRCUIT
A
V
IN
I
IN
V
IN
V
OUT
0.33µF
NJM2886
2.2µF
(ceramic)
*3
I
OUT
V
V
OUT
A
V
V
CONT
I
CONT
CONTROL
GND
*3 1.7V<Vo≤2.6V version: Co=4.7µF(ceramic)
Vo≤1.7V version: 10µF(ceramic)
Ver.2006-04-07
-3-
NJM2886
TYPICAL APPLICATION
1
In the case where ON/OFF Control is not required:
V
IN
0.33µF
R
(0½300kΩ)
CONTROL
V
IN
V
OUT
V
OUT
NJM2886
2.2µF
*4
(ceramic)
GND
*4 1.7V<Vo≤2.6V version: Co=4.7µF
Vo≤1.7V version: 10µF
Connect control terminal to V
IN
terminal
2
In use of ON/OFF CONTROL:
V
IN
V
IN
V
OUT
V
OUT
0.33µF
R
NJM2886
2.2µF
*4
(ceramic)
CONTROL
GND
*4 1.7V<Vo≤2.6V version: Co=4.7µF(ceramic)
Vo≤1.7V version: 10µF(ceramic)
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.
-4-
Ver.2006-04-07
NJM2886
ELECTRICAL CHARACTERISTICS
3.2
NJM2886_3.0V
Output Voltage vs. Input Voltage
@:Ta=25 C
Co=2.2µF
(Ceramic)
o
4
NJM2886_3.0V
Output Voltage vs. Output Current
@:Ta=25
o
C
V
IN
=4.0V
Co=2.2µF
(Ceramic)
3.5
3.1
3
Output Voltage : Vo(V)
Output Voltage : Vo(V)
3.3
3.4
Io=0A
3
2.5
2
2.9
Io=100mA
1.5
2.8
1
Io=300mA
0.5
2.7
2.7
2.8
2.9
3
3.1
3.2
0
0
200
400
600
800
1000
Input Voltage : V
IN
(V)
Output Current : Io(mA)
NJM2886_3.0V
Ground Pin Current v.s. Output Current
30
@:Ta=25
o
C
V
IN
=4.0V
Co=2.2µF
(Ceramic)
0.35
o
NJM2886_3.0V
Dropout Voltage vs. Output Current
@:Ta=25 C
Co=2.2µF
(Ceramic)
25
0.3
Ground Pin Current : I
GND
(mA)
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)
60
NJM2886_3.0V
Control Current vs. Control Voltage
@:Ta=25
o
C
V
IN
=4.0V
Co=2.2µF
(Ceramic)
Io=30mA
4
NJM2886_3.0V
Output Voltage vs. Control Voltage
3.5
50
3
Rc=0Ω
(µ A)
µ
Output Voltage : Vo(V)
40
Cont
2.5
Rc=50kΩ
2
Control Current : I
30
20
Rc=0Ω
Rc=100kΩ
Rc=50kΩ
1.5
Rc=100kΩ
1
10
0.5
@:Ta=25 C
V
IN
=4.0V
Co=2.2µF
(Ceramic)
Io=30mA
o
0
0
0
0.5
1
1.5
2
2.5
Cont
3
3.5
4
0
0.5
1
1.5
2
Cont
2.5
3
Control Voltage : V
(V)
Control Voltage : V
(V)
Ver.2006-04-07
-5-
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