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.
!
PACKAGE OUTLINE
NJM2886DL2
!
FEATURES
"
High Ripple Rejection
75dB typ. (f=1kHz)
"
Output Noise Voltage
Vno=45µVrms
"
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
!
PIN CONFIGURATION
3
NJM2886DL2
12345
PIN FUNCTION
1.CONTROL
2.V
IN
3.GND
4.V
OUT
5.NC
!
EQUIVALENT CIRCUIT
V
IN
Control
Bandgap
Reference
Thermal
Protection
V
OUT
GND
!
OUTPUT VOLTAGE RANK LIST
Device Name
V
OUT
Device Name
NJM2886DL2-18 1.8V
NJM2886DL2-03
NJM2886DL2-21 2.1V
NJM2886DL2-33
NJM2886DL2-25 2.5V
NJM2886DL2-35
NJM2886DL2-26 2.6V
NJM2886DL2-38
NJM2886DL2-28 2.8V
NJM2886DL2-05
V
OUT
3.0V
3.3V
3.5V
3.8V
5.0V
Ver.2004-01-16
-1-
NJM2886
!
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Input Voltage
V
IN
(Ta=25°C)
UNIT
V
RATINGS
+14(*note 1)
8(Tc=25°C)
Power Dissipation
P
D
mW
0.8(Ta≤25°C)
Operating Temperature
Topr
−40 ∼
+85
°C
Storage Temperature
Tstg
−40 ∼
+125
°C
(*note 1): When input voltage is less than +14V, the absolute maximum control
voltage is equal to the input voltage.
!
ELECTRICAL CHARACTERISTICS
(V
IN
=Vo+1V, C
IN
=0.33µF, Co=2.2µF: Vo≥2.7V (Co=4.7µF: Vo≤2.6V), Ta=25°C)
PARAMETER
SYMBOL
TEST CONDITION
Output Voltage
Vo
Io=30mA
Quiescent Current
I
Q
Io=0mA
Quiescent Current
V
CONT
=0V
I
Q(OFF)
at Control OFF
Output Current
Io
Vo-0.3V
Line Regulation
∆Vo/∆V
IN
V
IN
=Vo+1V
∼
Vo+6.0V, Io=30mA
Load Regulation
∆Vo/∆Io
Io=0
∼
500mA
Dropout Voltage
Io=300mA
∆V
I−O
ein=200mVrms,f=1kHz, Io=10mA
Ripple Rejection
RR
Vo=3.0V 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=3.0V Version
Control Voltage for
V
CONT(ON)
ON-state
Control Voltage for
V
CONT(OFF)
OFF-state
MIN.
-1.0%
−
−
500
−
−
−
−
−
−
1.6
−
TYP.
−
200
−
650
−
−
0.18
75
±50
45
−
−
MAX.
+1.0%
300
100
-
0.10
0.03
0.28
−
−
−
−
0.6
UNIT
V
µA
nA
mA
%/V
%/mA
V
dB
ppm/°C
µVrms
V
V
(*note 2): 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.2004-01-16
NJM2886
!
POWER DISSIPATION VS. AMBIENT TEMPERATURE
NJU2886DL2
(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
O
I
OUT
2.2
µ
F
OR
4.7
µ
F(Vo
≤
2.6V)
0.33
µ
F
NJM2886
V
V
O
A
V
V
CONT
I
CONT
CONTROL
GND
Ver.2004-01-16
-3-
NJM2886
!
TYPICAL APPLICATION
1
In the case where ON/OFF Control is not required:
V
IN
0.33
µ
F
V
IN
V
O
V
O
2.2µF
OR
4.7µF(Vo≤2.6V)
NJM2886
R
(0
½
300kΩ)
CONTROL
GND
Connect control terminal to V
IN
terminal
The quiescent current can be reduced by using a resistance “R”. Instead, it increases the minimum operating voltage.
For further information, please refer to Figure “Output Voltage vs. Control Voltage”.
2
In use of ON/OFF CONTROL:
V
IN
V
IN
V
O
V
O
2.2µF
OR
4.7µF(Vo≤2.6V)
0.33µF
NJM2886
R
CONTROL
GND
State of control terminal:
•“H”→
output is enabled.
•“L”
or “open”
→
output is disabled.
-4-
Ver.2004-01-16
NJM2886
!
ELECTRICAL CHARACTERISTICS
NJM2886_3.0V
Output Voltage vs. Input Voltage
4
3.2
NJM2886_3.0V
Output Voltage vs. Output Current
@:Ta=25 C
VIN=4.0V
Co=2.2uF
(Ceramic)
o
@:Ta=25 C
Co=2.2uF
(Ceramic)
3.1
o
3.5
3
Output Voltage : Vo(V)
Io=0A
3
Output Voltage : Vo(V)
3.3
3.4
2.5
2
2.9
Io=100mA
1.5
1
2.8
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)
NJM2886_3.0V
Ground Pin Current v.s. Output Current
30
@:Ta=25 C
VIN=4.0V
Co=2.2uF
(Ceramic)
25
o
Output Current : Io(mA)
NJM2886_3.0V
Dropout Voltage vs. Output Current
@:Ta=25 C
Co=2.2uF
(Ceramic)
0.3
o
0.35
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 C
Vin=4.0V
Co=2.2uF
(Ceramic)
Io=30mA
o
4
NJM2886_3.0V
Output Voltage vs. Control Voltage
3.5
50
3
Rc=0Ω
Control Current : I
Cont
(uA)
40
Output Voltage : Vo(V)
2.5
Rc=50kΩ
2
30
20
Rc=0Ω
Rc=100kΩ
Rc=50kΩ
1.5
Rc=100kΩ
1
10
0.5
@:Ta=25 C
Vin=4.0V
Co=2.2uF
(Ceramic)
Io=30mA
o
0
0
0.5
1
1.5
2
2.5
3
3.5
4
0
0
0.5
1
1.5
2
2.5
3
Control Voltage : V
Cont
(V)
Control Voltage : V
Cont
(V)
Ver.2004-01-16
-5-
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