NJM2883
LOW DROPOUT VOLTAGE REGULATOR
GENERAL DESCRIPTION
The NJM2883 is a low dropout voltage regulator in EMP8
package
Advanced Bipolar technology achieves low noise, high ripple
rejection and low quiescent current.
It is suitable for portable applications.
FEATURES
High Ripple Rejection
75dB typ. (f=1kHz,Vo=3V Version)
Output Noise Voltage
Vno=30µVrms typ.(Cp=0.01µF)
Output capacitor with 1.0µF ceramic capacitor (Vo≥2.7V)
Output Current
Io(max.)=300mA
High Precision Output
Vo±1%
Low Dropout Voltage
0.10V typ. (Io=100mA)
ON/OFF Control
(Active High)
Operating Voltage Range +2.3V∼+14V (Vo≤2.0V version)
Internal Short Circuit Current Limit
Internal Thermal Overload Protection
Bipolar Technology
Package Outline
EMP8 (5.0×6.0×1.5mm)
PIN CONFIGURATION
1
2
3
4
8
7
6
5
PACKAGE OUTLINE
NJM2883E
NJM2883E
EQUIVALENT CIRCUIT
V
IN
Control
PIN FUNCTION
1.V
OUT
2.GND
3.GND
4.NOISE BYPASS
5.CONTROL (Active High)
6.GND
7.GND
8.V
IN
V
OUT
Thermal
Protection
Bandgap
Reference
Noise
Bypass
GND
Ver.2004-12-22
-1-
NJM2883
OUTPUT VOLTAGE RANK LIST (* : Under development)
Device Name
V
OUT
Device Name
*NJM2883E15
1.5V
*NJM2883E31
*NJM2883E17
1.7V
NJM2883E33
NJM2883E18
1.8V
NJM2883E345
*NJM2883E21
2.1V
*NJM2883E35
NJM2883E25
2.5V
*NJM2883E38
NJM2883E28
2.8V
*NJM2883E04
*NJM2883E285
2.85V
*NJM2883E43
NJM2883E29
2.9V
*NJM2883E47
NJM2883E03
3.0V
NJM2883E05
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Input Voltage
V
IN
Control Voltage
V
CONT
Power Dissipation
P
D
Operating Temperature
Topr
Storage Temperature
Tstg
V
OUT
3.1V
3.3V
3.45V
3.5V
3.8V
4.0V
4.3V
4.7V
5.0V
(Ta=25°C)
RATINGS
UNIT
+14
V
+14(*1)
V
650(*2)
mW
-40
∼
+85
°C
-40
∼
+125
°C
(*1): When input voltage is less than +14V, 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)
Operating voltage
V
IN
=+2.3V
∼
+14.0V (In case of Vo<2.1V)
ELECTRICAL CHARACTERISTICS
(Vo>2.0V version : V
IN
=Vo+1V, C
IN
=0.1µF, Co=1.0µF: Vo≥2.7V (Co=2.2µF: Vo≤2.6V), Cp=0.01µF, Ta=25°C)
PARAMETER
SYMBOL
TEST CONDITION
MIN. TYP. MAX.
Output Voltage
Vo
Io=30mA
-1.0%
+1.0%
−
Quiescent Current
I
Q
Io=0mA, expect Icont
120
180
−
Quiescent Current
V
CONT
=0V
100
I
Q(OFF)
−
−
at Control OFF
Output Current
Io
Vo - 0.3V
300
400
-
Line Regulation
0.10
∆Vo/∆V
IN
V
IN
=Vo+1V∼Vo+6V, Io=30mA
−
−
Load Regulation
0.03
∆Vo/∆Io
Io=0∼300mA
−
−
Io=100mA
0.10
0.18
Dropout Voltage
∆V
I−O
−
ein=200mVrms,f=1kHz, Io=10mA,
Ripple Rejection
RR
75
−
−
Vo=3V Version
Average Temperature
∆Vo/∆Ta
Ta=0∼+85°C, Io=10mA
±50
−
−
Coefficient of Output Voltage
f=10Hz∼80kHz, Io=10mA,
Output Noise Voltage
V
NO
30
−
−
Vo=3V Version
Control Voltage for ON-state
V
CONT(ON)
1.6
−
−
Control Voltage for OFF-state
V
CONT(OFF)
0.6
−
−
UNIT
V
µA
nA
mA
%/V
%/mA
V
dB
ppm/°C
µVrms
V
V
-2-
Ver.2004-12-22
NJM2883
(Vo≤2.0V version: V
IN
=Vo+1V, C
IN
=0.1µF, Co=2.2µF: Vo≥1.9V (Co=4.7µF: Vo≤1.8V), Cp=0.01µF, Ta=25°C)
PARAMETER
SYMBOL
TEST CONDITION
MIN. TYP. MAX.
Output Voltage
Vo
Io=30mA
-1.0%
+1.0%
−
Quiescent Current
I
Q
Io=0mA, expect Icont
120
180
−
Quiescent Current
V
CONT
=0V
100
I
Q(OFF)
−
−
at Control OFF
Output Current
Io
Vo - 0.3V
300
400
-
Line Regulation
0.10
∆Vo/∆V
IN
V
IN
=Vo+1V∼Vo+6V, Io=30mA
−
−
Load Regulation
0.03
∆Vo/∆Io
Io=0∼300mA
−
−
ein=200mVrms, f=1kHz, Io=10mA,
Ripple Rejection
RR
80
−
−
Vo=1.8V Version
Average Temperature
∆Vo/∆Ta
Ta=0∼85°C, Io=10mA
±50
−
−
Coefficient of Output Voltage
f=10Hz∼80kHz, Io=10mA,
Output Noise Voltage
V
NO
20
−
−
Vo=1.8V Version
Control Voltage for ON-state
V
CONT(ON)
1.6
−
−
Control Voltage for OFF-state
V
CONT(OFF)
0.6
−
−
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
nA
mA
%/V
%/mA
dB
ppm/°C
µVrms
V
V
TEST CIRCUIT
A
I
IN
V
IN
V
OUT
I
OUT
V V
OUT
V
IN
0.1µF
NJM2883
1.0µF
*3
(ceramic)
A
I
CONT
CONTROL
GND
NOISE
BYPASS
Cp=0.01µF
V
V
CONT
*3
1.9V
≤
Vo
≤
2.6V version: Co=2.2µF(ceramic)
Vo
≤
1.8V version: Co=4.7µF(ceramic)
Ver.2004-12-22
-3-
NJM2883
TYPICAL APPLICATION
1
In case that ON/OFF Control is not required:
V
IN
V
IN
0.1µF
NJM2883
R
(0
∼
300kΩ)
CONTROL
GND
V
OUT
V
OUT
1.0µF
*4
NOISE
BYPASS
Cp=0.01µF
*4
1.9V
≤
Vo
≤
2.6V version: Co=2.2µF
Vo
≤
1.8V version: Co=4.7µF
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
OUT
V
OUT
0.1
µ
F
R
NJM2883
1.0
µ
F
*4
CONTROL
GND
NOISE
BYPASS
Cp=0.01
µ
F
*4
1.9V
≤
Vo
≤
2.6V version : Co=2.2uF
Vo
≤
1.8V version : Co=4.7uF
State of control terminal:
•
“H”→ output is enabled.
•
“L” or “open”
→
output is disabled.
Noise bypass Capacitance Cp
Noise bypass capacitance Cp reduces noise generated by band-gap reference circuit.
Noise level and ripple rejection will be improved when larger Cp is used.
Use of smaller Cp value may cause oscillation.
Use the Cp value of 0.01uF greater to avoid the problem.
-4-
Ver.2004-12-22
NJM2883
ELECTRICAL CARACTERISTICS
NJM2883_3.0V
Output Voltage v.s. Input Voltage
@Ta=25
℃
Co=1.0uF(Ceramic)
Cp=0.01uF
Output Voltage : Vo [V]
3.5
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
NJM2883_3.0V
Output Voltage v.s. Output Current
3.3
Output Voltage : Vo [V]
3.1
Io=0mA
2.9
Io=300mA
Io=100mA
2.5
2.5
2.7
2.9
3.1
3.3
3.5
Input Voltage : Vi [V]
NJM2883_3.0V
Ground Pin Current v.s. Output Current
@Ta=25
℃
Co=1.0uF(Ceramic)
Cp=0.01uF
2.7
@Ta=25
℃
Co=1.0uF(Ceramic)
Cp=0.01uF
100
200
300
400
500
600
20
Ground Pin Current : IGND [mA
0.30
0.25
Dropout Voltage : dVi-o [V]
0.20
0.15
0.10
0.05
Output Current : Io [mA]
NJM2883_3.0V
Dropout Voltage v.s. Output Current
16
@Ta=25
℃
Co=1.0uF(Ceramic)
Cp=0.01uF
12
8
4
0
0
125
250
375
500
Output Current : Io [mA]
NJM2883_3.0V
Control Current v.s. Control Voltage
@Ta=25
℃
Co=1.0uF(Ceramic)
Cp=0.01uF
Io=30mA
Rc=100kΩ
Rc=50kΩ
Rc=0Ω
0.00
0
100
200
300
400
500
Output Current : Io [A]
NJM2883_3.0V
Output Voltage v.s. Control Voltage
20
3.5
3.0
Output Voltage : Vo [V]
2.5
2.0
1.5
1.0
0.5
0.0
Control Current : Icont [uA]
16
12
Rc=100kΩ
Rc=50kΩ
Rc=0Ω
@Ta=25
℃
Co=1.0uF(Ceramic)
Cp=0.01uF
Io=30mA
1.5
2.0
2.5
3.0
8
4
0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0.0
0.5
1.0
Control Voltage : Vcont [V]
Control Voltage : Vcont [V]
Ver.2004-12-22
-5-
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